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While this is an excellent ultra-wide zoom lens for analogue
(film) SLR cameras, this lens is especially well suited for digital SLR cameras
which usually have an imaging sensor size smaller than the 35mm format. When
used with such digital SLR cameras these focal lengths can give an angle of view
approximately equivalent to that of a 28-70mm lens used on a 35mm camera, which
makes it the ideal standard zoom lens.
All of the "L" lenses deliver optical performance
equal to similiar fixed focal length lenses, and the USM lenses do this with
silent, high-speed focusing. Distortions and aberrations are remarkably small
for a lens of such amazing capabilities.
- Rear gelatin filter slot accepts up to three gel
filters, allowing for a multitude of different combinations
- Lens retains the popular 77mm filter size shared by
other Canon "L" zoom lenses
- Lens uses three aspheric elements of two
different types, while Super UD (Ultra-low Dispersion) glass is
used to prevent the chromatic aberrations that often can degrade the
subject edge clarity
- Entirely internal focusing and zooming movement
- Dust and moisture resistance is equal to the
professional levels of the EOS 1-V and 1-D cameras
- Circular aperture diaphragm produces brilliant
out-of-focus characteristics
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