How about taking a wedding dress with Canon 1740? Is it enough? I use 1635\4, because it is used less. How about changing it to a cheaper one?

As one of the small ternary of Canon, 17-40L has many remarkable points. For example, the overall pixel is ok, the workmanship is very worthy of the price, the hood is not only domineering enough, but the actual size and internal flocking can not only prevent glare, but also prevent bumping. Of course, it is inevitable that the common faults of ordinary ultra-wide-angle lenses will be more obvious on this lens.

Pictured: Canon 17-40mm f/4L lens.

Of course, the visual impact brought by super wide angle can erase many problems, such as the dark angle at the lower wide angle of Quan Huafu is extremely obvious and the distortion is relatively large. As long as the pictures are excellent enough, all this is not a problem. So buying this lens only depends on whether you need a wide angle. For APS-C camera users, buying this lens is not a very cost-effective choice. 17-55IS with some money is much more practical. Why not consider it?