How Much Difference Does a Lens Really Make?

If you’re a Canon user, you might have come across the terms EF and EF-S while shopping for lenses. These two types of lenses have some differences that you should be aware of before making a purchase. In this article, we’ll discuss how to differentiate between Canon EF and EF-S lenses, so you can make an informed decision.

Canon EF lenses are designed for full-frame cameras, such as the Canon 5D Mark IV and the Canon 6D. These lenses have a larger diameter and are more expensive than EF-S lenses. On the other hand, EF-S lenses are designed for crop-sensor cameras, such as the Canon 7D and the Canon 80D. These lenses have a smaller diameter and are less expensive than EF lenses.

To determine whether a lens is EF or EF-S, you need to look at the lens mount. The mount is the part of the lens that attaches to the camera. EF lenses have a larger mount than EF-S lenses. If the mount is larger than the diameter of the camera’s image sensor, then it’s an EF lens. If the mount is smaller than the diameter of the camera’s image sensor, then it’s an EF-S lens.

In conclusion, the main difference between Canon EF and EF-S lenses is the size of the lens mount. EF lenses are designed for full-frame cameras, while EF-S lenses are designed for crop-sensor cameras. By knowing this, you can make an informed decision when purchasing a lens for your Canon camera.

Canon EF and EF-S lenses: an overview

Key differences between EF and EF-S lenses

One of the primary differences between Canon EF and EF-S lenses is the mount. Canon EF lenses have a larger diameter and a more substantial mounting area, while EF-S lenses have a smaller diameter and a smaller mounting area. This difference in mount size means that EF-S lenses are only compatible with Canon’s APS-C sensor DSLRs, while EF lenses can be used with both APS-C and full-frame sensor DSLRs.

Another difference between the two types of lenses is the flange distance. The flange distance is the distance between the lens mount and the sensor. EF lenses have a longer flange distance than EF-S lenses, which means that they are better suited for full-frame cameras. EF-S lenses, on the other hand, are designed for APS-C sensors and will not perform as well on full-frame cameras.

Additionally, Canon EF lenses have a wider range of focal lengths and apertures available compared to EF-S lenses. This means that if you are looking for a specific focal length or aperture, you are more likely to find it in an EF lens.

In terms of image quality, both EF and EF-S lenses are capable of producing high-quality images. However, due to their larger size and longer flange distance, EF lenses generally offer better image quality and are capable of resolving more detail.

Lastly, it’s worth noting that EF-S lenses are typically less expensive than EF lenses. This is due to their smaller size and simpler design, which makes them easier and cheaper to manufacture.

Overall, while both Canon EF and EF-S lenses have their own unique benefits and drawbacks, understanding the key differences between the two can help you make an informed decision when choosing a lens for your Canon DSLR.

EF lenses

EF lenses are a type of camera lens manufactured by Canon. They are designed to be used with Canon’s full-frame DSLR cameras, such as the Canon 5D Mark IV and the Canon 6D. EF lenses are known for their high-quality optics and are capable of producing stunning images and videos.

One of the key differences between EF and EF-S lenses is the size of the image sensor that they are designed to work with. EF lenses are designed to work with full-frame sensors, which are larger than the APS-C sensors found in many other DSLR cameras. This means that EF lenses are capable of capturing more light and producing sharper images than EF-S lenses.

Another difference between EF and EF-S lenses is the flange distance, which is the distance between the lens and the image sensor. EF lenses have a longer flange distance than EF-S lenses, which means that they are not compatible with cameras that have shorter flange distances.

Overall, EF lenses are a popular choice for photographers and videographers who are looking for high-quality optics and superior image quality. If you are using a full-frame Canon DSLR camera, then an EF lens is likely to be the best choice for you.

EF-S lenses

EF-S lenses are a series of lenses designed specifically for Canon’s cropped-sensor DSLRs, such as the EOS 7D and EOS 60D. These lenses are not compatible with Canon’s full-frame DSLRs or mirrorless cameras, as they are designed to match the smaller sensor size.

The key difference between EF-S lenses and EF lenses is the physical size and design. EF-S lenses are typically smaller and lighter, with a shorter flange distance, which is the distance between the lens and the camera’s sensor. This means that EF-S lenses cannot be used on full-frame Canon DSLRs, as the flange distance is too short.

Another key difference between EF-S and EF lenses is the image circle. The image circle is the area of the image that the lens can capture, and it is determined by the lens’s design and the sensor size. EF-S lenses are designed to produce an image circle that matches the size of Canon’s cropped sensors, while EF lenses are designed to produce an image circle that matches the size of Canon’s full-frame sensors.

One advantage of EF-S lenses is their lower cost and smaller size, making them a good option for photographers who are working with a budget or who need a more portable lens for travel or street photography. However, they are limited in their compatibility with other Canon camera models, which may be a disadvantage for some photographers.

Overall, the main difference between EF-S and EF lenses is their compatibility with Canon’s cropped-sensor and full-frame DSLRs, respectively. EF-S lenses are designed to match the smaller sensor size and are smaller and lighter, while EF lenses are designed to match the larger sensor size and are more versatile in their compatibility with different camera models.

Canon EF lenses are the original lenses that were introduced by Canon back in 1987. They are characterized by their internal focusing mechanism and electronic connections. The EF lens mount is also compatible with full-frame and 35mm film cameras. The physical size of EF lenses is larger than EF-S lenses, which is due to the presence of an additional pin in the mount that allows for full-frame compatibility. EF lenses are known for their excellent build quality, sharpness, and color accuracy. They also offer better autofocus performance and are suitable for professional use.

Physical differences

EF-S lenses are characterized by their smaller size and lighter weight compared to EF lenses. This is due to the fact that they are designed to fit on Canon DSLR cameras with APS-C sensors, which have a smaller image circle than full-frame EF lenses. As a result, EF-S lenses have a shorter flange distance, which is the distance between the lens and the camera’s sensor. This allows them to be more compact and lightweight, making them a popular choice for travel and everyday use.

Compatibility with camera bodies

One of the most significant differences between EF and EF-S lenses is their compatibility with different camera bodies. EF lenses are designed to fit on both full-frame and APS-C Canon DSLR cameras, while EF-S lenses are only compatible with APS-C cameras. This means that if you have a full-frame camera, you will not be able to use EF-S lenses on it.

Autofocus performance

Another key difference between EF and EF-S lenses is their autofocus performance. Because EF-S lenses are designed for APS-C cameras, they are optimized for the smaller sensor size. This means that they are able to focus more quickly and accurately on subjects, particularly when using live view mode. EF lenses, on the other hand, may have more difficulty focusing on subjects in certain situations, particularly when shooting in low light or using older models of Canon DSLRs.

Image quality

While EF-S lenses are generally considered to be lower in quality than EF lenses, this is not always the case. Many EF-S lenses offer excellent image quality, particularly when used on APS-C cameras. However, some EF-S lenses may have lower image quality due to their smaller size and lower cost. As with any lens, the quality of an EF-S lens will depend on its specific design and features.

Identifying EF and EF-S lenses

Visual inspection

When it comes to identifying Canon EF and EF-S lenses, visual inspection is one of the most straightforward methods. Both types of lenses have distinct physical characteristics that set them apart from one another.

• Size and design: EF-S lenses are generally smaller and lighter than EF lenses, and they have a different design that’s tailored to fit Canon’s APS-C DSLRs. EF lenses, on the other hand, are larger and heavier, and they’re designed to fit Canon’s full-frame DSLRs as well as its APS-C models.
• Mount: The mount of an EF lens is slightly larger than that of an EF-S lens, which is why EF lenses are not compatible with APS-C DSLRs. When you attach an EF lens to an APS-C camera, you’ll only be able to use the central portion of the sensor, resulting in a cropped image.
• Markings: EF-S lenses often have a silver or black paint job, while EF lenses usually have a black paint job. Additionally, EF-S lenses will have a silver or black plastic ring around the mount, while EF lenses have a black metal ring.

By visually inspecting these characteristics, you can quickly differentiate between Canon EF and EF-S lenses.

Checking the lens mount

One of the most straightforward ways to differentiate between Canon EF and EF-S lenses is by checking the lens mount. The lens mount is the part of the lens that attaches to the camera body, and it plays a crucial role in determining the compatibility of the lens with the camera.

Canon EF lenses have a larger diameter lens mount, measuring 44mm in diameter, while Canon EF-S lenses have a smaller diameter lens mount, measuring 24mm in diameter. The smaller diameter of the EF-S lens mount is due to the fact that it is designed to fit only on Canon DSLRs with APS-C sized sensors, whereas the larger diameter of the EF lens mount is designed to fit on both full-frame and APS-C sized sensors.

It is important to note that while checking the lens mount is a simple way to differentiate between EF and EF-S lenses, it is not the only way. Other factors such as the focal length, image stabilization, and autofocus capabilities can also be used to differentiate between the two types of lenses. However, checking the lens mount is a good starting point for beginners who are still learning about the different types of Canon lenses available.

Verifying compatibility with your camera body

One of the key differences between Canon EF and EF-S lenses is their compatibility with different camera bodies. Canon EF lenses are designed to fit all Canon EOS camera bodies, regardless of the model or the sensor size. On the other hand, Canon EF-S lenses are designed specifically for APS-C sensor cameras, which means they cannot be used on full-frame Canon EOS cameras without an adapter.

To verify the compatibility of a Canon EF or EF-S lens with your camera body, you can follow these steps:

1. Check the lens mount: Canon EF lenses have a larger diameter mount than EF-S lenses, so you can easily identify the type of lens by looking at the mount.
2. Check the camera body specifications: If you are unsure whether a lens is compatible with your camera body, you can check the specifications of your camera body or consult the Canon website to see if the lens is listed as compatible.
3. Use an adapter: If you have a full-frame Canon EOS camera and want to use an EF-S lens, you can use an adapter to attach the lens to your camera. However, keep in mind that the performance of the lens may be affected when using an adapter.

By verifying the compatibility of a Canon EF or EF-S lens with your camera body, you can ensure that the lens will fit properly and perform optimally.

Factors to consider when choosing between EF and EF-S lenses

Budget

When considering the difference between Canon EF and EF-S lenses, one of the primary factors to consider is budget. Canon EF lenses are generally more expensive than EF-S lenses due to their wider range of compatibility with both full-frame and APS-C sensors. This makes them a more versatile option for photographers who own both types of cameras or plan to upgrade in the future. On the other hand, EF-S lenses are specifically designed for APS-C sensors and are therefore more affordable. However, this also means that they are not compatible with full-frame cameras, which may limit their usefulness for some photographers.

Additionally, the cost of Canon EF and EF-S lenses can vary widely depending on the specific model and its features. Higher-end lenses, such as those with image stabilization or specialized glass elements, will typically be more expensive regardless of whether they are EF or EF-S. However, lower-end lenses may be more affordable in the EF-S lineup, making them a more budget-friendly option for beginner or casual photographers.

Overall, budget should be a key consideration when choosing between Canon EF and EF-S lenses. While EF-S lenses may be more affordable upfront, their limited compatibility may make them a less versatile option in the long run. Conversely, while Canon EF lenses may be more expensive, their wider range of compatibility may make them a more valuable investment for photographers who own or plan to own both full-frame and APS-C cameras.

Camera body compatibility

When it comes to choosing between Canon EF and EF-S lenses, one of the most important factors to consider is camera body compatibility. This is because EF-S lenses are designed to fit only on Canon DSLRs that have an APS-C sensor, while EF lenses can be used on both full-frame and APS-C sensor cameras.

Here are some key points to keep in mind when considering camera body compatibility:

• EF-S lenses are designed specifically for Canon’s APS-C sensor DSLRs, such as the EOS 7D, EOS 80D, and EOS 90D. If you have one of these cameras, then an EF-S lens will fit and function properly.
• EF lenses, on the other hand, are designed to fit on both full-frame and APS-C sensor cameras. This means that if you have a full-frame camera like the Canon EOS R or EOS R5, you can use an EF lens without any issues. However, if you have an APS-C sensor camera and try to use an EF lens, the lens may not cover the entire sensor, resulting in a smaller effective focal length.
• It’s worth noting that some EF lenses have a special variant called the “EF-S” lens, which is designed specifically for APS-C sensor cameras. These lenses will fit on both full-frame and APS-C sensor cameras, but they will not cover the entire full-frame sensor.

In summary, camera body compatibility is an important factor to consider when choosing between EF and EF-S lenses. If you have an APS-C sensor camera, you’ll want to choose an EF-S lens. If you have a full-frame camera, you can choose either an EF or EF-S lens, depending on your needs.

Autofocus performance

When choosing between Canon EF and EF-S lenses, one important factor to consider is their autofocus performance. While both types of lenses are equipped with advanced autofocus systems, there are some differences worth noting.

EF lenses

Canon EF lenses are designed to work with professional-grade DSLRs, such as the Canon EOS-1 series and the Canon 5D series. These lenses typically offer faster and more accurate autofocus performance compared to EF-S lenses, thanks to their advanced AF algorithms and more sophisticated focus motors.

Additionally, EF lenses are designed to cover a full-frame sensor, which means they can provide excellent image quality and low light performance. This makes them ideal for professional photographers who require the highest image quality and performance.

EF-S lenses

Canon EF-S lenses, on the other hand, are designed specifically for APS-C sensor DSLRs, such as the Canon EOS Rebel series. These lenses typically offer good autofocus performance, but may not be as fast or accurate as EF lenses.

One advantage of EF-S lenses is that they are generally more affordable than EF lenses, making them a good option for budget-conscious photographers. Additionally, because they are designed specifically for APS-C sensors, they can offer a more compact and lightweight design, which can be beneficial for travel or everyday use.

In summary, when choosing between Canon EF and EF-S lenses, it’s important to consider the autofocus performance and compatibility with your camera. While EF lenses may offer faster and more accurate autofocus performance, EF-S lenses can be a good option for budget-conscious photographers or those who need a more compact and lightweight lens for everyday use.

Image quality

When considering the image quality of Canon EF and EF-S lenses, it is important to note that both types of lenses can produce high-quality images. However, there are some differences to keep in mind when making a decision.

Firstly, Canon EF lenses are designed to work with full-frame DSLRs, while EF-S lenses are designed specifically for APS-C sensor DSLRs. This means that EF-S lenses will only work on Canon DSLRs with APS-C sensors, while EF lenses can be used on both full-frame and APS-C sensor cameras.

In terms of image quality, Canon EF lenses generally perform better on full-frame cameras due to the larger sensor size. This is because the lens’s optical design is optimized for the larger sensor, resulting in sharper and more detailed images. On the other hand, EF-S lenses are designed to work with APS-C sensors, which are smaller than full-frame sensors. While they can still produce high-quality images, they may not perform as well as EF lenses on full-frame cameras.

Another factor to consider is the aperture of the lens. Canon EF lenses tend to have wider apertures, which allows for more light to enter the camera and can result in better low-light performance. EF-S lenses may have narrower apertures, which can limit their low-light capabilities.

Overall, the image quality of Canon EF and EF-S lenses can vary depending on the specific lens and camera being used. However, Canon EF lenses generally perform better on full-frame cameras due to their larger sensor size and wider apertures.

When choosing between Canon EF and EF-S lenses, one of the most important factors to consider is your budget. While both types of lenses offer excellent image quality, EF lenses tend to be more expensive than EF-S lenses.

• Factors that can affect the price of EF and EF-S lenses
  • Quality of construction – EF lenses are generally made with higher quality materials and have a more robust construction, which can increase their price.
  • Features – EF lenses often come with additional features such as weather sealing, image stabilization, and fluorine coatings, which can add to their cost.
  • Demand – EF lenses are generally more popular and in higher demand, which can drive up their price.
  • Compatibility – EF lenses are compatible with a wider range of Canon cameras, which can make them a more versatile option for photographers with multiple camera bodies.

It’s important to keep in mind that while EF-S lenses may be more affordable, they are only compatible with APS-C format Canon DSLRs, meaning they won’t work with full-frame cameras. Ultimately, your budget will play a significant role in determining which type of lens is right for you.

When deciding between Canon EF and EF-S lenses, it is important to consider the compatibility of the lens with your camera body. EF-S lenses are designed specifically for Canon APS-C DSLRs, while EF lenses are designed for both full-frame and APS-C DSLRs. Here are some factors to consider when choosing between EF and EF-S lenses based on camera body compatibility:

Differences in sensor size between full-frame and APS-C cameras

The sensor size of a camera can greatly impact the compatibility of lenses. Full-frame cameras have a larger sensor size compared to APS-C cameras, which means that lenses designed for full-frame cameras may not be compatible with APS-C cameras and vice versa. For example, EF-S lenses are designed specifically for APS-C cameras and will not fit on full-frame cameras without an adapter. On the other hand, EF lenses are designed to fit both full-frame and APS-C cameras, but the field of view will be different depending on the camera’s sensor size.

Compatibility of EF-S lenses with full-frame cameras

While EF-S lenses are designed specifically for APS-C cameras, they can still be used on full-frame cameras with the help of an adapter. However, the lens will not be able to take full advantage of the full-frame sensor’s size and will result in a smaller field of view. Additionally, some EF-S lenses may not perform well in low light situations on full-frame cameras due to their smaller sensor size.

It is important to keep these factors in mind when choosing between EF and EF-S lenses based on camera body compatibility. Ultimately, it is up to the photographer to decide which lens will best suit their needs and camera setup.

Differences in autofocus speed and accuracy between EF and EF-S lenses

One of the main differences between Canon EF and EF-S lenses is their autofocus performance. EF lenses are generally known for their faster and more accurate autofocus compared to EF-S lenses. This is because EF lenses have a more sophisticated autofocus system that allows for quicker and more precise focusing. In contrast, EF-S lenses are designed for APS-C sensors and may have a slower and less accurate autofocus due to their simpler design.

Factors that can affect autofocus performance

Several factors can affect the autofocus performance of Canon EF and EF-S lenses. One of the most important factors is the type of camera being used. EF lenses are designed to work with both full-frame and APS-C sensors, while EF-S lenses are designed specifically for APS-C sensors. As a result, EF lenses will generally perform better on full-frame cameras, while EF-S lenses will perform better on APS-C cameras.

Another factor that can affect autofocus performance is the type of focus motor used in the lens. EF lenses typically use a ring-type ultrasonic motor (USM) or a stepper motor (SM) for autofocus, which allows for faster and more accurate focusing. In contrast, some EF-S lenses may use a less sophisticated focus motor that can result in slower and less accurate autofocus.

Finally, the number of focus points can also affect autofocus performance. EF lenses typically have more focus points than EF-S lenses, which allows for more precise focusing. Additionally, some EF lenses may have advanced features such as predictive focus tracking, which can help keep subjects in focus even when they are moving.

When choosing between Canon EF and EF-S lenses, one of the primary factors to consider is image quality. While both types of lenses are designed to produce high-quality images, there are some differences to be aware of.

• Differences in image quality between EF and EF-S lenses

One of the main differences between Canon EF and EF-S lenses is the size of the image sensor that they are designed to work with. EF lenses are designed to work with full-frame cameras, while EF-S lenses are designed to work with APS-C sensor cameras. Because the image circle projected by an EF lens is larger than that of an EF-S lens, EF lenses can produce sharper images and have better bokeh (the quality of the out-of-focus areas in an image).

However, it’s important to note that the difference in image quality between EF and EF-S lenses is not always easily noticeable in practice. This is because many modern DSLRs, including Canon’s own EOS Rebel series, have very high-resolution sensors that can capture a lot of detail. As a result, the difference in image quality between EF and EF-S lenses is often minimal.

• Factors that can affect image quality

There are other factors that can affect image quality as well. For example, the quality of the lens itself can have a significant impact on image quality. A high-quality lens will generally produce sharper, more detailed images than a lower-quality lens. Additionally, factors such as lighting, composition, and camera settings can all have a significant impact on the final image quality.

Overall, while there are some differences in image quality between Canon EF and EF-S lenses, these differences are often not easily noticeable in practice. Other factors, such as the quality of the lens and the skill of the photographer, can have a much greater impact on image quality.

Recap of key differences between EF and EF-S lenses

When considering which type of Canon lens to purchase, it’s important to understand the key differences between EF and EF-S lenses. Here’s a brief recap of the main factors that set these two types of lenses apart:

• Compatibility with camera bodies: EF lenses are compatible with both full-frame and APS-C sensor Canon DSLRs, while EF-S lenses are designed specifically for APS-C sensor cameras. This means that EF-S lenses cannot be used on full-frame Canon DSLRs without an adapter.
• Image circle: The image circle of an EF lens is larger than that of an EF-S lens. This means that EF lenses can produce sharper images at the edges of the frame when used on APS-C sensor cameras, as there is less vignetting.
• Focal length: EF-S lenses are designed for APS-C sensor cameras, which means they have a shorter flange distance than full-frame cameras. This allows EF-S lenses to be designed with shorter focal lengths, making them ideal for travel and everyday use.
• Autofocus: All EF lenses are compatible with Canon’s EOS autofocus system, while some EF-S lenses may not be compatible with older camera models.
• Price: EF lenses tend to be more expensive than EF-S lenses, as they are designed to be compatible with both full-frame and APS-C sensor cameras.

By understanding these key differences, you can make an informed decision when choosing between EF and EF-S lenses for your Canon DSLR.

Tips for choosing the right lens for your needs

When choosing between Canon EF and EF-S lenses, there are several factors to consider to ensure you get the right lens for your needs. Here are some tips to help you make the right choice:

• Your camera’s compatibility: One of the most important factors to consider is whether your camera is compatible with EF or EF-S lenses. EF lenses are compatible with all Canon EOS cameras, while EF-S lenses are designed specifically for APS-C format DSLRs. Therefore, if you have a full-frame EOS camera, you should choose an EF lens, while if you have an APS-C format camera, you should choose an EF-S lens.
• Your shooting style: Another important factor to consider is your shooting style. If you enjoy shooting landscapes, portraits, or still life, you may prefer an EF lens, which tends to have a wider focal length range and better image quality. On the other hand, if you enjoy shooting sports, wildlife, or other fast-moving subjects, you may prefer an EF-S lens, which is typically lighter and more affordable.
• Your budget: Your budget is also an important factor to consider when choosing between EF and EF-S lenses. EF lenses tend to be more expensive than EF-S lenses, but they also offer better image quality and features. Therefore, if you have a limited budget, you may want to consider an EF-S lens, which can still produce high-quality images, especially if you’re shooting with an APS-C format camera.
• Your specific needs: Finally, you should also consider your specific needs when choosing between EF and EF-S lenses. For example, if you need a lens with a specific focal length or aperture, you should choose a lens that meets those requirements. Additionally, if you need a lens with specific features, such as image stabilization or weather sealing, you should choose a lens that offers those features.

By considering these factors, you can choose the right lens for your needs and ensure that you get the best possible results from your Canon EOS camera.

Additional resources for learning about Canon lenses

When it comes to learning about Canon lenses, there are a variety of resources available to help you make an informed decision. Here are some options to consider:

1. Canon’s official website: Canon’s website is a great place to start when learning about their lenses. They provide detailed product descriptions, specifications, and images for each lens in their lineup. You can also find helpful tutorials and guides to assist you in selecting the right lens for your needs.
2. Photography forums: There are many online photography forums where you can ask questions and get advice from experienced photographers. Websites like Canon Rumors, Digital Photography Review, and Photography Life are great places to start. These forums can be a valuable resource for learning about Canon lenses and getting feedback from others.
3. Camera stores: Camera stores often have knowledgeable staff who can help you choose the right lens for your needs. They can provide you with hands-on experience with the lenses and help you understand the differences between EF and EF-S lenses.
4. YouTube videos: There are many YouTube channels dedicated to photography and Canon lenses. Some popular channels include Ted Forbes, Ken Rockwell, and Jared Polin. These channels can provide helpful reviews and tutorials on Canon lenses.
5. Photography blogs: There are many photography blogs that cover Canon lenses and related topics. Some popular blogs include Photography Life, Digital Photography School, and Peta Pixel. These blogs can provide helpful reviews, comparisons, and tutorials on Canon lenses.

Overall, there are many resources available to help you learn about Canon lenses and make an informed decision when choosing between EF and EF-S lenses.

FAQs

1. What is the difference between Canon EF and EF-S lenses?

Canon EF and EF-S lenses are two types of lens mounts used by Canon cameras. The main difference between the two is that EF-S lenses are designed specifically for Canon’s DSLRs with APS-C sensors, while EF lenses are designed for full-frame DSLRs and some APS-C DSLRs. This means that EF-S lenses cannot be used on full-frame cameras, while EF lenses can be used on both full-frame and APS-C cameras.

2. How can I tell if a lens is EF or EF-S?

The easiest way to tell if a lens is EF or EF-S is to look at the lens itself. EF-S lenses will have a silver band around the outside of the lens mount, while EF lenses will have a black band. Additionally, EF-S lenses will often have a designation such as “EF-S 18-55mm f/3.5-5.6 IS II” printed on the lens barrel, while EF lenses will simply have the focal length and aperture printed on the lens.

3. Can I use an EF-S lens on a full-frame camera?

No, EF-S lenses cannot be used on full-frame cameras because they are designed specifically for APS-C sensors. When an EF-S lens is mounted on a full-frame camera, the camera’s sensor will only be able to use a portion of the lens’s image circle, resulting in a smaller field of view and reduced image quality.

4. Can I use an EF lens on an APS-C camera?

Yes, EF lenses can be used on APS-C cameras, but the camera will only be able to use a portion of the lens’s image circle. This means that the effective focal length of the lens will be longer than its listed focal length, and the field of view will be narrower. For example, a 50mm EF lens used on an APS-C camera will have an effective focal length of 80mm.

5. Is there any way to determine the lens type without looking at the lens itself?

Yes, you can determine the lens type without looking at the lens itself by checking the lens specifications on Canon’s website or in the camera’s manual. The specifications will indicate whether the lens is EF or EF-S, and which type of camera it is compatible with.

EF vs EFS | ALL you need to know in 2020 (for beginners)