Looking at and working with this lens, I realized that the Tamron 90mm f/2.8 Macro is almost an exact copy of the earlier Canon non-USM 100mm lens. The seller could say, "Sorry about that, you had the lens too long to return it!" Then I will sell this lens on eBay and purchase a non-L 100mm f/2.8 macro. It could be that the seller didn't know that there was a non-USM Canon 100mm f/2.8 Macro lens floating around. I was kicking myself that I didn't read the eBay posting closely enough until I went back to eBay and re-read the description which plainly says USM. Then, I didn't realize that the non-USM lens was the one I got until, I purchased a lens hood and a tripod ring for the non-L USM lens and it didn't fit the lens that I had bought. If fact, I didn't realize at first that this was not the lens I wanted. A good used copy of that one, if you can find it, should be a reasonable option.That is what I "thought" I was purchasing. I have the L, but from what I have read, the USM is optically very similar to the L. I paid for the lens with PayPal.Īccording to Wikipedia, that lens was introduced in 1990, and the USM, which was presumably its replacement, was introduced in 2000. I just sent an email to the seller stating that the lens was not as described and telling him that I want to return it. I thought that it was my error and I would have to bite the bullet but, I looked back at the eBay ad and saw that the lens was advertised as a USM version. The front element also extends when I focus. But on the macro lens with its heavier optics and much greater focus travel it is very slow and noisy. It's the same AFD (arc-form drive) motor that works just fine on my 50/1.8 MkI and a small number of other old designs. The lens I received has AFD rather than USM. I began my investigation when a tripod ring I purchased for this lens and the lens hood didn't fit. And didn't even realize that it was the arc-form drive version which was introduced before Canon introduced the USM macro lens.
I purchased a lens which was advertised as a 100mm f/2.8 Macro USM lens. I thought that there were only two versions of the Canon 100mm f/2.8 Macro IS and Non-IS wit both being USM. Additionally, as an L-series lens, this 100mm f/2.8 is weather-sealed for working in inclement conditions.I didn't know that Canon produced a version of the 100mm f/2.8 Macro that doesn't have a USM motor. In regard to its optical assets, one ultra-low dispersion element is featured, to control color fringing and chromatic aberrations, and a Super Spectra coating has been applied to suppress flare and ghosting for improved contrast and color fidelity.
#CANON MACRO 100MM 2.8 USM MANUAL#
Also contributing to smooth and intuitive handling, a ring-type USM and internal focusing design offers quick, quiet, and accurate autofocus performance along with full-time manual focus override.
#CANON MACRO 100MM 2.8 USM FULL#
Complementing close-up shooting, an Image Stabilizer is featured that minimizes camera shake by two stops at full 1:1 magnification, or up to four stops at lower magnifications for sharper handheld shooting.
As a macro lens, however, this 100mm offers a life-size, 1:1 maximum magnification and an 11.8" minimum focusing distance. Primarily designed for close-up shooting, the EF 100mm f/2.8L Macro IS USM from Canon is a versatile L-series short telephoto prime that is also well-suited for portraiture and other mid-range subjects.
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