The use of separate rings for both
zooming and manual focusing in addition to the variable maximum apertures employed
has contributed to the overall compact size and lightweight of this EF 70-210mm zoom
lens. This is in contrast to the bulky manual focus FD 70-210mm f/4 zoom lens made
for Canon's manual focus 35mm SLR cameras, which is almost twice the length in when
set in both the 70 and 210mm focal lengths.
As with any of the EF telephoto zoom lenses, the EF 70-210mm is great for use in subject matters ranging from abstracts, architecture, people, portraiture, candid, still-life, travel and sports. The reflection (below, top left) of an opposite building in the windowpanes is another is an example of how the EF 70-210mm can be used for abstract photography. Next is the photo showing a row of dormant flags due to lack of winds atop the ledge of another building.
The two other photos (above, bottom left and right) were shot at the 210mm setting of the zoom lens. When using zoom lenses, it is very often than not that photographers (me included) tend to shoot at either end of the lens, and very rare in-between the focal lengths. But in these examples above, the 210mm settings were chosen mainly to exclude distractions that could otherwise divert the attention of the viewer away from the main point of interest. The optical quality of the EF 70-210mm USM zoom lens is excellent. However, there are a few things that a user must take into consideration: it being a reasonably-priced as well as the use of polycarbonate materials for the internal zooming cam, ensures that the focusing is really sharp and spot-on prior to clicking the shutter. The lens is ultra-fast and accurate when it is brand new but over the years, when wear and tear abounds, there may be some loss of focusing speed and accuracy to lock-on properly, especially when it is being used for grab shots. Nope, the optical resolution is not fading but you may notice that its ability to accurately focus and lock onto the subject correctly can sometimes be a little bit off the mark, thus giving you the impression that the resolving power had gone south after years of usage. Just give a careful second look as to where the lens really focuses the next time you use it in One Shot AF mode. This problem does not occur when used in AI Servo AF mode. << Back to Main . 1 . 2 . 3 . |
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