Review on Canon EF-S 17-55mm f/2.8 IS USM Lens - Compatible with Canon DSLR Cameras (Lens Only) by Somchai Kittisak ᠌

In general, an excellent lens, given its direct purpose - a crop camera. In terms of image quality on the crop, it is comparable to L-series lenses. It's a pity that they saved on dust and moisture protection properties. Canon also regretted a piece of plastic in the form of a lens hood. Here it is modern marketing in all its glory - if you want everything in the highest class - take L. Over time, at full zoom, 55 mm is not clearly fixed, thus. you need to hold the zoom ring while shooting. The use of UD lenses, as in expensive lenses, gives a good result - there is almost no chromaticity in the corners. Although this lens in its segment can not be called cheap either. 2.8 is quite a working aperture, as I said above. With a wide angle and shooting landscapes, it can only come in handy at night, and during the day 5.6 - 8 is usually used. At f / 11, the picture quality is still decent. You should avoid using f / 6.3, because. for most crops, due to the pixel size at this aperture, there may be a diffraction effect in some scenes. As for the front and back focus, I don’t understand the people who write about it at all. One fool said and everyone repeats, and moreover, they also pay extra money to sellers for testing when buying. This concept does not apply to lenses, because. the autofocus sensor is located in the camera itself, and the lens motor is electronically controlled until the best result is achieved. And for those who write that they wear their lenses for adjustment, I’ll explain: you need to rebuild a pair - lens + camera. With normal equipment, starting from 50D, this can also be done at home, because. in the camera menu there is an autofocus adjustment item. Z. Y. Excellent glass for clarity, HA, distortion! On the crop, it is comparable to the 24-70 f / 2.8L of the first series, it is not inferior to the 24-70 f4 L, the 17-40 L outdoes it! If you plan to use the crop for a long time, feel free to buy, then even if you want to switch to 35 mm, you can always sell it without much loss in value.