The "S" in ef-s stands for Short back focus. This tell us right off the two 35mm most certainly not look the same. That has nothing to do with their physical FL. "Owners of APS-C cameras must make a mental calculation of effective focal length when purchasing EF lenses, because of the cropping and enlargement produced by this combination. EF. EF stands for Electro-Focus and this applies to almost every Canon lens that’s intended for use with the company's full-frame DSLR cameras (and EOS film bodies). It's also used to describe the lens mount on these bodies, which features a single red dot that's used for mounting the lens. This term indicates that the camera and lens can EXCLUSIVELY CANON, ESSENTIAL FOR EOS USERS. CROP FACTOR. Sometimes when an attempt is made to simplify or explain a term or reference point, it can end up complicating the situation. This is exactly what happened – as far as we’re concerned – when Canon introduced the EF-S lens mount. Terms like ‘crop factor’, 'extra reach’ and Ef versus EF-S Lenses. What's the difference between Canon EF-S and EF Lenses? In less than 100 seconds you'll learn the difference between the two sizes of CANON MOUNT ADAPTER EF-EOS R: Photo Sensor Size: 1/2.3-inch: Image Stabilization: Digital: Min Shutter Speed: 1 seconds: Metering Description: Center Weighted: Exposure Control Type: Automatic: Form Factor: Mirrorless: Effective Still Resolution: 30.3 MP: Special Feature: Canon EF/EF-S Lens to EOS R Camera; Dust- and Water-Resistant B1wQOTO. The primary difference between a crop (EF-S) lens and a full-frame (EF) lens is how big the image circle is that the lens projects. An EF-S lens will only cover an APS-C sensor fully within its smaller circle, while an EF lens will fully cover the much larger full frame sensor (and by extension, can also cover a smaller APS-C one). Has full-time manual focus. Canon EF-S 10-22mm f/3.5-4.5 USM. Sigma 18-35mm F1.8 DC HSM A. With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode. Canon EF-Mount: The Standard. Used by more filmmakers and video producers than any other mount, the EF was introduced by Canon in 1987 and has gone on to become the most versatile mount on the market. The largest reason for this wider adoption is Canon’s massive reach in the DSLR market for both photographers and indie filmmakers. Canon EF-S. weather-sealed (splashproof) Canon EF 75-300mm F/4-5.6 III. Canon EF-S 18-55mm F/3.5-5.6 IS II. The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes. Has a metal mount. Canon EF 75-300mm F/4-5.6 III. Canon EF-S 18-55mm F/3.5-5.6 IS II. A metal mount is generally superior to a Similarly, the EF-S lens mount can be used with Canon cropped APS-C DSLR Camera but not with the full-frame DSLR. They both can be paired with the Canon full-frame R and M series with the help of an adapter. Q. What are the differences between Canon EF and EF-S lenses? EF-S is the derivative of EF lens mount and compact size of the same. But

canon ef and ef s difference