The optical construction is made of 12 elements in 11 groups without any special elements. Its aperture mechanism features just 5 aperture blades so a pleasing bokeh was probably not on the design priority list nor is it really needed for the majority of applications of such a lens.

It is in great shape and takes awesome pictures

Overall, this is a very good lens that every filmmaker should have in his bag. Yes, I use my DSLR primarily for filmmaking and have found the 20mm focal length to come in handy a lot of times. Very sharp image given its price point. Definitely a good lens to have in the bag!

Great Item, an absolute jewel to shoot with. i bought this lens for my cityscapes and it is doing more than i could have asked for,' A very crisp lens.

This is a very useful lens wide angle lens for a full frame camera if you're on a budget or need to pack light. If you're looking for ultimate image quality, click elsewhere. If you want a cheap 20mm lens that is reasonably well built and gives good image quality at f/5.6 or f/8, this may be what...

Small; light; inexpensive; fast silent ring USM; good build quality

contrast a little weak wide open; hood is huge and probably useless

I have had this lens for a few years now and it has been my primary landscape lens. I have won a number of awards for images I created with this and have always been very pleased with the quality of the images from it.

Superior build quality; Super-sharp images; Fast auto-focus

I just bought this little lens off ebay for a great price. I have noticed so poor reviews here but at the price I thought I would give it a try. Some of the observations made by others are quite correct and I found from my initial test that the images tend to lack a little contrast straight from the...

Lightweight; quick and accurate USM focusing; price

Images a little flat and lacking in contrast but easily trewwkable in PS

Canon EF 20-35mm f/3.5-4.5 USM, released back in mind 1993, replaced Canon's EF 20-35mm f/2.8L USM as a consumer-grade variant (the original 20-35mm f/2.8L USM was in turn discontinued in favor of EF 17-35mm f/2.8L USM).

The Canon EF 20-35mm f/3.5-4.5 USM was Canon´s first attempt to provide an ultra-wide lens to the masses. It was introduced back in 1993 and possibly it has been discontinued recently (no clear information here yet).

A great zoom lens for those with a small bank account. It is small, compact, light weight and a pleasure to use. Takes great sharp photos with excellent contrast and color. You can't do better for the price, especially if you are using a full frame digital camera like the Canon 5D.