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

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

September 13, 2022

Satisfied with the purchase one hundred percent, I recommend the product for everyone.

The cheapest L-ka, but still L-ka. For a crop, this is a great lens. If you don’t really need a long angle, then 17-55, 17-85 and 15-85 are clearly better, not to mention 18-55. A little dark, of course, but on a good carcass this is not a problem (ISO / flash). Compared to 16-35 / 2.8, this one is not as sharp, a stop darker and a little narrower at the wide end, but the price / quality ratio is clearly better. All the muck of this lens comes out only on a full frame - vignetting and low sharpness at the edges. In this case, buying a more expensive option may be justified (it is also not without these shortcomings, but it copes better with them). On the crop - definitely not. Well, it's a pleasure to feel it, guys. Both rings go smoothly, lie well in the hand. Solid in general.

Pros

Enough good has been said about this lens, there is not much to add. The letter L and the red stripe speak for themselves. Build quality, sharpness, lens hood and case included. For a long time, not a speck of dust or a scratch, survived the rain and falling to the floor from a height of growth. Used of course only under the filter. Not a single miss of focus. Even in the dark. Very pleased with a fairly good zoom ratio. Does not change size when zooming.

Cons

Well, it took some tweaking with the 50D to get perfect focus. At apertures 4-5.6 it is not very sharp, but sharper than any EF-S. It can only be compared with 15-85, but the second is somewhat for other purposes. Since the range involves use either for landscapes or indoors (with a flash, of course) - my aperture is almost always closed to 8-11, and in this state it is very sharp. In cases where you need a portrait - at the long end and with a maximum aperture - then ringing sharpness is not particularly needed, light software is even good for the portrait. There is a jamb when shooting macro with a built-in flash (if there are such perverts) - due to the size of the lens, it casts a shadow on the lower part of the frame, more than half. It is inconvenient to remove the cover when the hood is screwed on, if this can be considered a disadvantage =) A wound filter solves this problem.