Review on Ultra Wide Angle Zoom Lens for SLR Cameras - Canon EF 17-40mm f/4L USM by Aditya ᠌
The best thing Ive ever used, a great item for everyone!
I have been using the lens since 2022. Initially I used it on 50d - a good staff lens for most everyday tasks, now on 5d mark II and 1Ds Mark III - an excellent landscape lens on a "full frame". It conveys volume very well. Excellent accurate color reproduction (very juicy colors and tones without “gags” like on cheap plastic lenses, minimum post-processing), sharp at f 5.6 - 8 (I don’t recommend covering aperture larger than f11 - no one has yet canceled the diffraction limit). There is a vignette, but at an open aperture, and it is also easily eliminated during processing. There are no problems with focusing, everything is fast and without lubrication. The lens block moves inside the tube (for 11 years of operation there is no dust inside). Bokeh is pleasant enough, but this is a subjective parameter. Definitely recommend to buy. Excellent value for money. For the price, it's hard to find a wide-angle lens with such a "lively" colorful picture. Convenient focus. Good constructive.
- - convenient range of focal lengths; - good color reproduction and contrast; - distortion is predictable and can be easily corrected in editors; - light and compact; - fast focusing; - there are no retractable nodes, all moving elements are inside the tube.
- - lathers at the edges of the frame at f / 4 (at least my copy); - expensive filters (d 77 mm); - the lens hood is more for physical protection of the lens from accidental impacts than for shooting; - I don’t consider low aperture (f / 4) as a strong drawback: this is a wide-angle lens, the lens is designed for shooting landscapes and architecture at apertures from f / 6.3 to 11 to get maximum depth of field, if you want f / 2.8 for shooting in low light - if you please pay extra a lot of money ; - before buying, I definitely recommend testing the lens personally - there are "spotting" specimens.
