Buy CANON EF 100-400 F4.5-5.6L USMCANON EF 100-400 F4.5-5.6L USM Product Description:
- L-series super telephoto zoom lens
- Equipped with an Image Stabilizer
- The fluorite and Super UD-glass elements
- Largely eliminate secondary spectrum
- Ensures high picture quality at all focal lengths
Product Description
Zoom lenses are very convenient. The equivalent of two or more fixed focal length lenses in one unit. The maximum aperture of some zoom lenses changes as you alter the focal length, but through-the-lens (TTL) metering takes this into account to give correct exposure.
Canon offers this first EF telephoto zoom lens with a high-magnification zoom range of 100 to 400mm. This is the first L type zoom lens with IS (Image Stabilizer) system. The dual-mode IS mechanism corrects camera shake blurring equivalent to two shutter speed steps. The IS Mode-1 works for normal shooting and IS Mode-2 is suitable for panning shots of a moving subject, stabilizing images in viewfinder.
The optical system uses one artificial crystal fluorite and one Super UD (Ultra-low Dispersion) glass lens elements (3rd and 7th), which thoroughly correct chromatic aberration. The minimum focusing distance of 1.8m is achieved throughout zooming range. The floating system in rear focusing system is employed for the first time for EF zoom lens to achieve a high definition for the entire focusing range.
A ring USM (Ultrasonic Motor) drives high-speed and silent AF and full-time manual focusing. Linear zooming design with zooming friction adjustment ring gives a good operability of this lens.
Customer Reviews
Most helpful customer reviews
7 of 8 people found the following review helpful.
Sharp but heavy!
By Rose M. Swinson
This lens is great! It's my first L lens, after upgrading from the 75-300 F/4-5.5 IS USM lens. I must say the only drawback is that it's so heavy --- 3.1 lbs. BUT, because of the IS I'm able to take handheld pictures. The only way I could get sharp images tho, is by using a monopod/tripod. Of course that could just be me too.Highly recommended. But if I were doing it all over again, I'd test the lens first at a local camera shop (rent one for a day or so) so I could get the hang of it before I went out shooting w/ mine.I rate it 9/10!
1 of 2 people found the following review helpful.
SLOW TO FOCUS
By DR. Collector
This is a good lens, not a great one. The problem is that it is very slow to focus. I almost always go back to my Canon 70-300 lens because it's extremely fast and really great!
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