Canon EF 100mm f/2.8L Macro IS USM review at photodo

Canon EF 100mm f/2.8L Macro IS USM review at photodo

"The red stripe that is prominently placed around the front of the lens barrel isn't just for show. The lens feels impeccably put together with a nice wide rubber focusing ring placed two thirds along the length of the barrel. The lens balances well on the EOS 50D used for testing.

Manual focusing is a pleasure, even when in AF mode, as it offers full-time manual focus, which is great

for quick adjustments. Autofocus is swift and accurate, thanks in part to the ring-type ultrasonic focusing motor. Focusing is performed internally, so the lens doesn't extend as you get closer and the front filter thread doesn't rotate. A three position focus limiter switch provides the option between allowing the lens to track through the full focus range, or for distances greater or closer than 50cm. Selecting the correct zone can dramatically improve focus performance, especially at close distances.

Quite strong focus breathing is apparent through the viewfinder, especially at closer focusing distances, which can sometimes make it a little more challenging to frame your subject accurately while focusing, but I didn't find it too much of a problem.

A new design of Image Stabiliser, specifically designed for use at close distances, has been employed in this new optic. It differs from tradition in-lens stabilisation units because it's able to correct lens shift movements as well as angular movements of the lens. Canon say that the new system should be able to give up to two stops worth of shake correction at the closest focus of the lens, and four stops at infinity and I would say that's about right. I find it also helps greatly with composing an image while hand-holding, and with gaining an AF lock too as your subject isn't moving around so much in the viewfinder."

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