The Canon EF-S 18-135mm f/3.5-5.6 IS USM fits Canon’s APS-C format DSLRs, including the Rebels, right up to the Canon EOS 7D Mark II. It offers a much longer zoom range than a regular standard zoom for these cameras and almost qualifies as a ‘superzoom’. It’s an EF-S lens, however, which means it can’t be used on Canon’s full-frame 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 This is the big question. The marked difference between Canon EF-S lenses and Canon RF-S lenses is that EF-S lenses will only fit on crop-sensor APS-C Canon EOS DSLR like the EOS 850D, EOS 90D and EOS 7D Mark II. You simply can’t use EF-S lenses on full-frame EOS DSLRs as they have an EF mount. Whereas RF-S lenses will fit on both APS-C Canon 3 days ago · Yes. At least for Canon DSLRs, several third-party manufacturers make lenses that fit EF and EF-S mounts, and some of them are very good. Sigma and Tamron are big lens brands that make optics for Canon DSLRs, and in some cases they are sharper or better value than Canon's own optics. 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. Ejy2g05.