Review on Ultra Wide Angle Zoom Lens for SLR Cameras - Canon EF 17-40mm f/4L USM by Hongseok Bak ᠌
Good quality product, the price is commensurate with the quality.
4 years of excellent work. The repair with the replacement of the back of the case cost $300, but the quality of the picture was not affected in any way. Continues to reveal its capabilities now on a large matrix (5D2). To be honest, I don’t see a serious replacement for him. As a non-replaceable staffer for cropDSLR - OK, a combination of 24-105 f4L is possible for a full-frame photo, but IMHO it has a weaker picture, more aberrations (most of them are successfully choked by modern software).
Pros
- L-picture. Hardy. Good protection against moisture and dust. He broke the hull in half against a stone in Solovki (collected in the SC), the bears in Kamchatka rolled it on wet sand - they urgently had to retreat, leaving it on the shore for a while . The piece of iron is alive ! ;-) This is my approach! L-series Canon great respect.
Cons
- It creaks a bit with sand when the zoom is rotated after clubfoot ;-) Significant chrome aberrations and a slight drop in sharpness at the edges on a wide matrix, this is forgivable for the zoom.
