Canon EF 400mm

Canon EF 400mm
Canon EF 400mm f/5.6L USM Super Telephoto Lens for Canon SLR Cameras

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By Jeff
After reading all the rave reviews about this lens I took the plunge. The first copy I got was so bad I sent it back immediately. In live view with a stable test target (ISO 12233) it couldn't even manually focus it to anything close to sharp. The second one I got was better but its about 10% less resolution than I'm used to with the Canon 200mm F2.8 and 35mm F1.4 (both amazing lenses). I always enjoy zooming into an image and being surprised by the hidden details I miss viewing fit to screen but this lens constantly disappoints me. Its never crisp; its always on the soft side. Lots of reviews claim this lens is sharp as a tack but this just isn't my experience with it. I wish it was.



Perhaps I'm just expecting too much. The images are extremely sensitive to the slightest movement of the camera so you must shoot as fast as possible. Stopping it down did not measurably sharpen the images. It might work better with a full frame sensor (I'm using a cropped T1i).