Review on Ultra Wide Angle Zoom Lens for SLR Cameras - Canon EF 17-40mm f/4L USM by Wiktor ᠌

Name: Ultra Wide Angle Zoom Lens for SLR Cameras - Canon EF 17-40mm f/4L USM
Item: Ultra Wide Angle Zoom Lens for SLR Cameras - Canon EF 17-40mm f/4L USM
Rating: 5

July 04, 2023

The best purchase in my life, I will definitely buy it again.

 / 2.8 and 28 / 2.8 wide-angle fixes, the combination of very good optical properties, it is very good, comfortable indoors, although here (and only here) it can be inferior to the Canon EF 16-35mm f/2.8 I suggest looking at a few photos:
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mm -  page=0 not so sharp corners are cut at a wide angle, and color reproduction and contrast remain at their best, on the other hand, 40 mm focal length and f / 4 aperture at this focal length may not be enough, 27 mm EGF) without a pleasant near telephoto range (only up to 64 mm EGF, up to 80-85 mm is too far) I did not find it convenient on a crop camera.

Pros

1 Very good sharpness throughout the field in the range of 20-40 including with backlight, juicy color reproduction, an adequate level of geometric and chromatic aberrations, which practically disappear from a 20 for example, at 17 mm focal length, focusing to infinity significantly reduces distortion compared to focusing on close objects, although not completely, Moisture and dustproof design, especially if you wind the protective filter, A full-featured USM ring drive provides very fast, quiet and accurate autofocus and continuous manual override (FTM) Almost round diaphragm with 8 A very nice price compared to competitors for such a convenient lens.

Cons

1 to 20 (approximately) MP Canon 5D, MP, you should not rest so much on this shortcoming, it does not affect most frames so much, and from 25 / 21 or at least a Canon EF 16-35mm f / 4L IS USM for completely different money, and the same more expensive Canon EF 16-35mm f / 2.8 The presence at a focal length of 17 to 25 mm (approximately) A hood and a soft case are included, but they are of little use, I do not use them.