I use this lens at many indoor social gatherings with good results. The quiet USM focus keeps the atmosphere of a quiet conversation intact. The fast focus ...

As it turned out, my fear that the 24-105mm lens has a longer minimum focus distance is unwarranted. In fact, the 24-105mm lens could focus 0.05 m closer and ...

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 ...

The Canon EF 24-70mm f/2.8 L USM Lens is one of the most amazing zoom lens I have ever used. Firstly, getting the actual lens to my house took an excruciating ...

The Canon EF 50mm f/1.4 USM does not have internal focus mechanism. Therefore, during focus, the front lens elements will extend and retract, increasing and ...

This lens is based on Canon's micro motor, so full-time manual is not supported (means you can't turn the focus ring when AF is set). The focus ring turns ...

For most folks, the lens will be used in auto-focus mode. The ultrasonic motor (USM) on this lens is fast and accurate. In bright light, it locks on the subject ...

Dec 21, 2006 · If your lens start to act differently than before, such as producing blurry photos, not locking focus, etc. If you are really serious about ...

Even the Canon EF 28-135mm f/3.5-5.6 IS USM lens, my best macro zoom lens, can only achieve closest focus distance of 0.5m and magnifies the subject to 0.19x ...