Average Reviews:
(More customer reviews)I shot a roll of a film with a newly purchased 75-300 IS and returned it shortly afterwards. I was satisfied with the image quality (although it could be sharper at the 300mm end), however I found the performance of the lens to be unacceptable. The focusing speed is WAY too slow. For those of you who don't already know, there are TWO kinds of USM motors. One of them is very fast and allows focus override, one of them is very slow and does not allow for focus override. This lens has the latter. This lens flaunts the fact that it has a USM motor, but believe me, in terms of focusing speed, you will not be able to detect any difference between this lens and the non-USM 75-300 lens. The fact that the lens is a slow, dark f/5.6 at 300mm doesn't help things either. The image stabilizer does work well, but the focusing motor is just too slow. This is the first lens Canon made with IS and therefore contains the older USM motor (as far as I know, none of the other IS lenses contain this type of motor). Canon should really update this lens and put a better focusing motor in it. If they were to do that, this would be a KILLER lens.
During the event I shot using the 75-300 IS USM, I lost many good shots because the lens kept hunting instead of locking onto my subject. At one point I actually ended up throwing it into manual focus because it was just easier that way. Unfortunately, if you want a long telephoto zoom that focuses quickly, you have to throw out a lot more money and buy something like the 100-400 IS USM (which contains the GOOD USM motor) or the 70-200 USM (also containing the good focusing motor).
I'll close by saying that this lens will *probably* work well for you if you know you'll always be shooting places where there is VERY sufficient light (aka outside). Otherwise, I'd stay away from this lens.
Click Here to see more reviews about: Canon EF 75-300mm f/4-5.6 IS USM Telephoto Zoom Lens for Canon SLR Cameras
Canon EF 75-300mm f/4-5.6 IS USM Telephoto Zoom Lens for Canon SLR Cameras
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