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  Reviews by: deepak kumar  

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Canon EF 17-40mm f/4L USM

Review Date: Oct 4, 2007 Recommend? | Price paid: $697.00

Pros: Full frame performance is awesome
copy variation is a problem

I have to add a comment to my previous review.

My previous lens had an right sided back focus problem. I had to go through two copies before finding a perfect one. There seems to be some copy variation that's a little concerning for a top tier lens.

With the new copy, this lens is contrasty, sharp and much more colorful than my previous lens.

When mounted on a 5d, it completely changes character and shows it's potential. Compared to a 10-22, it's very sharp in the corners, although showing a bit more vignetting. Really excellent images -sharper throughout the whole frame than the 10-22 with similar color and contrast. Take the comparison with a grain of salt - these were obviously on two different camera models.

Basically, on a full frame body, this lens makes a lot more sense. It's really a 'must buy' on these types of cameras. If you get a good copy, it's absolutely top-notch. On a crop, it's not as compelling.

Canon EF 17-40mm f/4L USM

Review Date: Sep 27, 2007 Recommend? yes | Price paid: $697.00 | Rating: 8 

Pros: Light, solid construction. Essentially an internally focused lens with the very little zoom extension done within the main barrel. Good IQ
Not truly weather sealed. Images a little dull.

Good not great IQ right out of the box. Sharpness, contrast and color are not as vivid as some other lenses. RAW images PP well, though, and with a little work were excellent. Keep in mind that unfinished RAW images from this lens are relatively low in contrast and saturation. I've owned two copies of this lens, both with spot on focus and they both had these tendencies. Compared to a lens like the 24-105, these characteristics are obvious. I don't know that I would necessarily call these weakness b/c, as I said, a little PP is all it takes for very good pics.

Build is very good and I really like the size and weight as well as the fact that it doesn't extend outside the body of the lens.

Awesome value - I can't think of another lens this nice with this level of quality.

Overall, very good. Takes a little work to get the most out of this lens. Pics are more subtle and don't pop like some other lenses (ie 24-105). I would recommend trying other lenses in this range, in addition to this one, as its color rendition, etc. will not be to everyone's taste.