The Tamron lens only took good picture outdoor

But the important thing to me is the way the picture looks and the 17-40 produces a damn fine looking picture.

it will not take better pictures, it will make you a more refined photographer/artist

And I trust it to give me sharp pictures, even at the extreme settings - wide open and at the 17MM end

I explained that this lens was producing no better pictures (and in some cases worse pictures) than my kit lens, so I asked 'why would I spend the money on an L lens if my pictures are not improved'.

This high quality L-series lense will give you that crispness that makes a great picture

Not really, I always crop to create beautiful animal pictures in post processing and still maintain excellent picture quality for prints up to 8-10 inches

f 4 (from 4 years ago) takes amazing picture compared to this one

Nice pictures, great for close-ups, fast

so I can't wait to see what my pictures will look like with a full frame camera.

sharp pictures ,have a silent and fast focus

Sharp picture and wider enough for travel.

The pictures were fantastic even though the weather was rainy and dreary the entire time we were there (another plus - I felt confident that the lens would keep the damp out).

The 17-40 is priced very competitively for a Canon L lens and creates beautiful landscape pictures

You need to tweak your camera a bit to get some incredible pictures.

Most the pictures were unacceptably soft, especially around the edges.

but you'll end up with much better pictures.

and I thought with this len I will get good wide angle pictures, HOWEVER, you need to have a full frame camera to get this done, otherwise, the pictures look almost the same than using a normal len

The lens took horrible pictures above f/15, and anything below f/8 was pretty poor as well.

I used to have Sigma 10-20mm F3.5 DC, and it gave me wonderful pictures on Canon 7D.

Pro: excellent picture quality, great picture contrast, smooth focusing motors, excellent glass quality

I will say 60% the pictures was sharp with detail, 35% was acceptabe and maybe 5% was blurry during my randomly shoot

You can get sharp pictures and the correct color with this lens

Great pictures with my Canon EOS 6d

sharp pictures, Light weight

Not a single picture will be out of focus.3)From 28mm-40mm and the f-stop higher than 5.6, the picture is incredibly sharp

Bottom line: this lens takes SHARP pictures every you go with it.

The pictures are crisp and sharp.

the pictures are razor sharp, saturation is perfect, nice and compact, canon "L" quality definitely shines here.

I explained that this lens was producing no better pictures (and in some cases worse pictures) than my kit lens, so I asked 'why would I spend the money on an L lens if my pictures are not improved'.

I replied that this doesn't mean much when the best pictures are produced at f/8-f/11, and their reply was 'sorry to hear that you are not happy with this product'.

This was the only lens I put in my small camera bag each morning because it took the best pictures

The pictures are impressive

It took great pictures

Any picture taken with it its just fantastic

On a full frame camera, this lens produce soft corners however, because of the crop effect of APS-C sensor this problem does not show up in the pictures and the lens deliver Pin Sharp pictures from the center to the corner always

You CAN hold this lens still for great pictures

That being said, you can't beat the superior picture quality!

Very crisp pictures too!

and it takes sharper pictures at f2.8 than this lens takes at f12.

This lens is a must-have if you're serious about taking good pictures

It takes beautiful pictures, sharp, beautifully saturated, with no discernable vignetting and little flare under normal circumstances

In Airventure 2007, at Oshkosh, WI, I didn't have this lens and I lost several very interesting pictures for the lack of it

This lens has excellent qualities, pictures are sharp perfect and the zoom range is ideal especially for interior shoots as always the L type lens delivered.

If you need super fast and sharp I would go with a prime or maybe 16-35mm