like weight not so expensive L lens

Nothing at this price point

Covering both full-frame and APS-C sensors, the EF 17-40mm has proved popular with photographers since its launch – and for good reason

Build quality; promises only what it can deliver in style

Limited focal range; no IS

Great value L glass lens. I got this lens to upgrade from my kit lens for my Canon Rebel T5. Just tested this lens out by taking exhibit hall and cosplay photos at San Diego Comic Con.

This lens auto-focuses very quickly, the build quality is superb and when stopped down, the images are very sharp. Highly recommended!

This is a handsdown highly recommended lens if you guys are looking for upgrade. I am using Canon 60D cropped lens, I was deciding in either getting the 15-85mm standard lens or the Canon L 14-70mm "L" Lens.

CANON "L" MEANS LUXURY BUT AFFORDABLE PRICE

NOTHING

I am very satisfied with the quality of all of my Canon "L" lenses, the EF 17-40mm F/4.0 is no exception. I was looking for a wide angle zoom and thought I would rather have the F/2.8 but the price was a factor so I decided to go withe the slower F4.0.

I recently switched from Nikon to Canon and this was my first lens purchased for my 5D Mark II. My decision was made after reading several reviews from websites and blogs. I have to tell you they are all right! This lens takes sharp and vibrant pictures. Good bokeh too, though not the best.

[...] For weddings and outdoor photography, the focal length of this lens doesn't get any better. I had considered getting a comparable third brand lens (17-50 f2.8), but I ended up having to stop it down to f4 as it was soft wide open.

Consistent Output; Durable; Rugged; Strong Construction

I use to have the Tamron 17-50 f/2.8. I sacrificed the f2.8 max aperture for Canon L glass and build quality. I'm glad I did. My past Tamron accumulated much dust over its use and non-Canon lenses have poor resale value.

Weather-resistant construction; Affordable L series lens; Light weight

The lens hood blocks the built in flash in my former Canon 30D

This lens is well worth the price and I hate paying high prices for things. I would give this lens a 9/10.

Great detail and color in photos really can't ask for more here; I am a novice in the full frame camera world but I have to say this lens does everything I ask of it

Slow focus time and sometimes the lens can't focus at all if what you are looking at lacks enough detail to get the right sharpness; Zoom is very small and basic but decent for close ups