The auto-focus mechanism on this lens is based on Canon's micro motor. It is noisy and doesn't sound very smooth. In low-light and low-contract situation, it ...

This lens has Canon's ultrasonic motor (USM), which is silent and fast. I cannot hear the lens auto-focus. It supports full-time manual focus, which means you ...

As I mentioned in the 50mm lens review article, Canon's Micro-Motor is noisy and hunts quite a bit. It is hard to be discreet in a quiet social gathering when ...

Personal review of the Canon 75-300mm f/4-5.6 II USM lens.

This Canon EF 24-70mm f/2.8 L USM lens actually compliments a plethora of other equipment I have for my Canon. The 24-70 L has a magnification of 0.29x at 70mm.

An awfully good compact, lightweight, macro lens.

The lens is heavy. It is about as heavy as my Canon 300mm f/4 L lens. With massive lenses of this caliber, always support the camera and lens combination via ...

Canon EF 28-135mm f/3.5-5.6 IS USM vs. Canon EF 24-105mm f/4L IS USM. The Canon EF 28-135mm f/3.5-5.6 IS USM lens has been my favorite lens for years.

The auto-focus is very loud and noisy. It sound like it is under a lot of stress. It is relative fast. I prefer Canon and Sigma's AF switches to Tokina's AF ...

The auto-focus speed is extremely slow, compared to Canon's USM. However, speed is decent if you set the focus limiter to either normal or macro range. I am ...