What is ef- s lens

what is ef- s lens

What is the Difference Between Canon EF and EF-S Lenses?

When attaching EF-S lenses to a camera compatible with EF-M lenses, first attach the EF-S lens to the Mount Adapter EF-EOS M, then attach this to the camera aligned with the white, round mount index. Attaching the lens to the Mount Adapter is performed using the same process as attaching the lens to the body of a camera compatible with EF-S lenses. However, if your Canon camera lens has both a red dot and a white square to line up the body to when mounting the lens, then it is an EF-S lens. EF-S is stands for Сshort back focusТ. EF-S lenses were first developed in , when Canon bought out its EOS D/Digital .

This is a question that comes how to be a church usher quite often, so I am providing a brief explanation to answer it for those users new to the Canon DSLR system.

Canon EF and EF-S lenses refer to the mount type of the lens, which also differentiates between the sensor type. The full frame sensor is the larger of the two. It is the size of a 35mm film frame Ч 36mm x 24mm. The field of view how much of a scene you can see through the viewfinder is smaller when using the same lens on an APS-C format camera than it would be on a full frame camera.

Canon full frame cameras include the 1D Xthe 5D line and the 6D line. If a Canon EF-S lens were to be used on a full frame DSLR, it would produce heavy vignetting the corners would be black because the image circle produced by the lens is too small to cover the larger sensor.

They were designed to cover a 35mm film frame. Canon EF-S lenses are generally smaller and lighter than Canon EF lenses because less glass and a smaller lens barrel is required to produce an equivalent field of view for a lens that goes on an APS-C camera, like the Canon Rebel line, when compared to a full frame camera.

Additionally, the EF-S line of lenses are generally more affordable. Canon uses lower grade materials, while how to have a relationship with herpes producing solid results, for its EF-S line of lenses.

Hopefully, you are now aware of which Canon lenses are compatible with your camera. As what is the meaning of inure which lens you should buy, my suggestion is to buy the one that fits your needs. Quality EF-S lenses hold their resale value just fine. Buy the lens that fits your needs now. If that means you want a massive EF telephoto lens, then go ahead. If you upgrade to a full frame camera later, it will work fine.

You can hang on to your EF lenses, sell your EF-S lenses and buy their full frame equivalents after you upgrade. This particular ES received rave reviews and does not disappoint.

Common sense??? Most photographers just want to take great pictures. My first father in law was George Cernik. George Cernik traveled all over the world with Harvey Firestone. I had nearly five years with George before he died. The 35mm BW film was nearly free.

Developing at FTR was free. My answers sucked. In eight months my answers resolved the variables. The depth of field questions were added.

I bought a EF Some info on the interned are frequently nerdy, unclear and complicated too. Unless we know which questions too ask, how are we to learn without looking as though we have no common sense? Lots of info about the 1. Looking at a 2. This has been argued ad nauseum.

End of story As I understand it; I never tried it. You are right if you only could mount the EF-S lens in a full-frame camera. Mounting a lens designed for a camera with a small sensor or film format on a camera with a larger sensor or film format introduces major problems. I think the Rebel line will be completely adequate for me. Norm, I have 4 of the Rebel line cameras and they have worked beautifully for me over the years, I am thinking about upgrading but after reading all these comments, I will definitely take my time and do the research to make sure that the lenses I already have will fit my next camera.

I was told a long time ago that any Canon lens would fit any Canon cameraЕnot true! You live and learn, I should have researched that myself. Which one is it? I guess I always assumed that the number on the EF-S lens was adjusted already since they are designed for the smaller sensor. So that assumption is wrong? I guess once I get a few EF lenses I can find out.

Your prior assumption is wrong. There is no adjustment on the focal length label of the EF-S lenses. The variable when switching between lenses is the sensor size. The crop factor we are talking about is brought into play because the Canon Rebel series has a smaller sensor. The angle is determined by the trigonometric not arithmetic relationship between the sensor's diagonal measurement and the lens's focal length. A 50mm lens has a degree diagonal angle of view on a Canon Rebel. An 80mm lens has a degree diagonal angle of view on a Canon 5D.

The crop factor refers only to image size. It does not have a linear relationship with the angle of view. Most photographers have a poor technical grasp of photographic principles. Or that red, blue, and yellow are the color-printing primaries. I will continue to describe the term in the way it is accepted in the industry and the way Photography Bay readers can better understand how to use their cameras.

It is you who are complicating the issue, by giving an incorrect and unneeded explanation. The following is probably the simplest way to explain it in words.

A drawing is better. It sees less of the image than a full-frame sensor would see, so objects in the field of view are therefore larger when both images are viewed or printed at the same size. The smaller the sensor, the larger the crop factor. Can I get a Ef85 for a canon t5i and get distance from subject but still how to reduce high uric acid naturally sharpness or the 50mm n be close to subject can anybody help.

If I photograph a subject at say 3m with an 85mm lens on any camera, of any format, the linear size of the image at the film plane will be the same. It is not affected by anything other than the focal length and the distance from the subject. This what is ef- s lens Photographyand should be explained in any good book on photography. I learned it 50 years ago in a book by Andreas Feininger.

Both lenses work fine on the Rebel T5i. As noted in the article, the EF lenses will work on the Rebel cameras just the same as on Canon film cameras and full frame digital cameras. Both lenses will fall into the range of a common portrait lens field of view.

I need an explanation for Dummies like me. It came with an EF-S lens. What is your thought? Thank you so much! If a 30mm lens is mounted on an EF-S body with a multiplier of 1. On their respective bodies, both cameras give the same angle of view. How is that in any way deceptive? The only difference is that the 30mm lens will provide greater depth of field at the same f-stop. Attaching the EF lens to a cropped sensor body mandates use of the multiplier for both F stop and focal length.

This is done to manipulate people into thinking they what is ef- s lens getting something for nothing. F-stops are f-stops. Applying the 1. That the Canon EF-S lenses are mislabeled is my point. Since the Canon EF-S lenses are made for cropped sensors, they should be labeled accordingly, and then when EF-S lenses are used with a full sensor the photographer would multiply by 0.

Probably What are the federal income tax rates for 2011 does what they do for expediency. EF-S is a lens mount system. The camera you attach a lens to does not alter the optics of a lens. A 35mm lens is a 35mm lens is a 35mm lens. Same thing with point and shoot cameras. But marketing cannot change optical physics. Doing it any different with the interchangeable lens system would be much more confusing.

Does the position of the optics and diaphragm relative to the sensor change? In general, the image circle is slightly larger than the diagonal of the image frame film or sensor. The desired focal length and coverage are independent, and are both fully under control of the lens designer.

One does not control or determine the other. All lenses with the same focal length render objects the same size. All lenses for a given format have coverage of about the same diameter.


What Is A Canon EF-S Lens? EF-S lenses are designed specifically for Canon APS-C sensor cameras. It is not possible to mount an EF-S lens on an APS-H, or a full frame camera. Since crop sensor cameras do not make use of the full width of full frame lenses, you end up carrying around a lot more lens than is really necessary! Feb 23, †Ј Put simply, Canon EF-S lenses are designed solely for use on Canon APS-C DSLRs. Canon EF lenses are designed to work with full frame and APS-C DSLRs from Canon. Canon EF-S lenses have a smaller image circle that is only big enough to cover the smaller sensor found on Canon APS-C cameras.

It was released in Cameras with the EF-S mount are backward compatible with the EF lenses and, as such, have a flange focal distance of Such cameras, however, have more clearance, allowing lens elements to be closer to the sensor than in the EF mount. The "S" in EF-S has variously been described by Canon as coming from either "Small image circle" [1] the lens projects a smaller image circle than normal EF lenses to match the sensor , or "Short back focus" [2] the smaller mirror used in APS-C cameras also allows optical elements to protrude further into the camera body, reducing the minimum distance between the sensor and the back element of the lens.

The combination of a smaller sensor and shorter back focal length distance enhances the possibilities for wide angle and very wide angle lenses. Such lenses designed for the EF-S mount can be made smaller, lighter containing less glass , faster larger aperture and less expensive. However, some lenses produced by third-party manufacturers may feature the standard EF mount if they do not have the shorter back focal length but only have a small image circle.

Such lenses will give noticeable vignetting or unsharp outer areas if used on a 35mm film or full frame sensor cameras.

To a lesser degree, vignetting also occurs with APS-H sensor sizes, such as several now discontinued cameras of the 1D series. While it is possible to modify the lens such that the physical obstruction is removed, allowing for mounting to EF mount cameras, the rear of the lens would still obstruct the mirror. An additional reason is that the lenses produce a smaller image circle of even illumination circle of no vignetting. An EF-S lens alignment mark is indicated by a small white rectangle, whereas the EF employs a small red dot.

The lens will insert into the body when the alignment marks on each are matched, and the lens can then be rotated and locked into the operating position. Some have reported success attaching EF-S lenses to full-frame bodies with the use of an extension tube ; however, this does not eliminate the vignetting problem, and also removes the lens's ability to achieve infinity focus.

Although vignetting is still an issue, photos can be taken, and infinity focus achieved. This modification comes with caveats, one being that on some lenses, like the EF-S mm, at the 10mm setting, the element protrudes too far back toward EF mount camera bodies. The EF-S lens mount is a relatively new offering from Canon, so the selection of available lenses is limited compared to the full EF range, but it is backward compatible with the EF mount, and can therefore still accept all EF lenses.

EF-S lenses are very popular due to their lower cost and zoom lenses are preferred by amateur photographers. As of April , [update] no EF-S lens has been produced with the "L" designation or with diffractive optics , and only three EF-S prime lenses have been produced. From Wikipedia, the free encyclopedia. This article has multiple issues. Please help improve it or discuss these issues on the talk page.

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If notability cannot be shown, the article is likely to be merged , redirected , or deleted. See also: List of EF lenses. Archived from the original on Retrieved Canon EF-S mount lenses timeline. EF 50mm. EF 8Ч15mm Fisheye. Extender EF. Canon SLR cameras and lens mounts film. F-1 F-1n New F-1 T50 T70 T80 T90 T60 See also: Canon EOS digital cameras.

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