Canon EF 20mm f/2.8 USM lens Review
Posted on 2006-01-31 01:16:07 by LSDsmurfAs with all of Canon’s prime lenses, the build quality is commendable. The construction ( from the users point of view) is simple with the only control being the AF/MF switch situated to the left of the distance window just forward of the mount. This window is marked in both metres and feet and includes a very usable depth-of-field scale. Forward of this is the manual focus ring, and at 18mm wide there is plenty of room for most fingers. Autofocus is carried out by Canon’s USM motor, which is silent and quick in operation. However, the manual override that the system allows did, on this example, feel a little stiff and not quite as smooth as we are used to..
Link: ePhotoZine
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