Canon EF 100-400 mm f4.5-5.6 L IS USM Lens
Canon EF 100-400mm f/4.5-5.6L IS USM Lens has been replaced by Canon EF 100-400mm f/4.5-5.6L IS II USM
L-series super telephoto zoom lens equipped with an Image Stabilizer. The fluorite and Super UD-glass elements largely eliminate secondary spectrum. The floating system also ensures high picture quality at all focal lengths. The Image Stabilizer has two modes and it is compatible with Extenders 1.4x II and 2x II.
Specification Canon EF 100-400mm f4.5-5.6L IS USM Lens
Focal Length & Maximum Aperture 100-400mm 1:4.5-5.6
Lens Construction 17 elements in 14 groups
Diagonal Angle of View 24° – 6° 10′
Focus Adjustment Rear focusing system with USM
Closest Focusing Distance 1.8m/ 5.9 ft.
Zoom System Linear extension Type
Filter Size 77mm
Max. Diameter x Length, Weight 3.6″ x 7.4″, 3.1 lbs. / 92mm x 189mm, 1,380g
Why Buy Canon EF 100-400mm f4.5-5.6 L Lens?
Reviews of Canon EF 100-400mm f4.5-5.6L IS USM Lens*
EF 100-400mm is Versatile – I bought the lens for wild bird photography. I considered the EF 400 5.6, but I thought I better go with IS. I am a pure amateur hobbyist. I like the portability of the lens. The great close focus (5.9′) has been useful in getting images of flowers and insects. Most of my use is at the 400mm, but I like the ability to shorten-up if the subject comes closer. I use it mostly from a monopod, and I am still working to get consistently sharp images of moving birds. I have seen the work of professionals who use the same lens, so I know what is possible with my Canon equipment.The EF 100-400mm is heavy! For me, the push-pull zoom feature is an interesting challenge – keep it too loose, and it creeps longer; too tight, and you miss a shot trying to shorten it. I’ll keep working with it to see if I can give it 5 Stars.
A Great Value – This is my second purchase of this lens (the first got stolen) so that right there should tell you how much I like this lens. My favorite subject for this lens is Airshows but is a great Nature lens except in the darkest of conditions.
Great Lens, Know the Limits – I purchased this lens as I needed to give myself a bit more reach than my 70-200 could offer, even with the 1.4 extender. The versatility with the lens is great. The 100-400 range is perfect for photographing airplanes, wildlife, sports, etc. The images are sharp up until about 300mm and then there is a slight drop off in sharpness as you go beyond 300. The focusing at times can be a bit slow, which can be tough if you are trying to lock in on a moving subject. Finally the lens does seem to vignette a lot when mounted to a full frame, which is to be somewhat expected but maybe not so much to the degree I get at times. The lens is push/pull which is a bit uncommon now. However, the adjustment period really isn’t bad and after a day of playing around it feels normal. The tension ring is great for allowing you to determine how much or how little force will be required to zoom in or out.