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Canon 17-40mm L, sharpness ok?

Started May 1, 2014 | Discussions thread
ktownbill Senior Member • Posts: 2,196
Re: Canon 17-40mm L, sharpness ok?

DrShouter wrote:

Hey everybody,

A few days ago i bought a new 17-40mm L UW Lens, but I´m very dissapointed about the sharpness.
Is the blurriness at the edge and the corners normal for this lens?

Sorry for the silly question but this is my firs UW, 90% of my pictures were taken with the 70-200 f2.8 and this thing is razorsharp (Yes i know its a Tele).

Orginal Raws, out of the cam!

https://www.dropbox.com/sh/9r2ka4n8pn63hhb/g15WdQb8VX

Thanks!

If you want sharper edges and corners you need to shoot at f/8 and narrower. Or use a prime lens. The 17-40L shoots on-par with the 16-35L once you close it down to f/8. If you don't need a wider aperture than f/8, such as for landscape for example, your lens is fine. Ck for yourself in the link. Mouse over the image to switch between the 2 lenses. Enter your own choice of lens for comparison such as one of the many primes.

The 17-40L is a bargain for only $800 compared to $1600 for the 16-35L. (for f/8 and narrower aperture that is) The center sharpness is still good at f/4.

The 16-35L edges out the 17-40L in color and contrast but PP levels that playing field pretty much.

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=100&Camera=453&Sample=0&FLI=2&API=3&LensComp=114&CameraComp=9&SampleComp=0&FLIComp=2&APIComp=4

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Bill

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