I've got the Sigma in Nikon fit and it's very good. Fairly distorted at the very wide end but it's 10mm so you'd expect it. Good value and well built. Also it's got an interesting coating on it which seems to "polarise" slightly so Sigma have obviously optimised it for landscapes.
Quote:
Originally Posted by matt wilson
Surprisingly even the difference of 10 versus 11 mm at the wide setting is quite dramatic .
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It's not that surprising as the angle of view increases dramatically as the focal length gets shorter. On a 400D at 11mm the diagonal AoV is 101 degress and at 10mm its 106.3 degrees
Quote:
Originally Posted by flake
Just a comment to consider the Sigma 12 - 24mm as it's a FF lens and will last during your upgrades. Good quality too!
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Only if you're upgrading to FF. And APS-C isn't dead or dying anytime soon.
A couple of samples with the 10-20
Click to EMBIGGEN
You can see the distortion in the one below.
Click to EMBIGGEN