Depends on what you're doing. You'll lose at least a stop and your IQ won't be as good.
But, it is cheaper.
Depends on what you're doing. You'll lose at least a stop and your IQ won't be as good.
But, it is cheaper.
The Sigma lines are really affordable. The 10-20mm and the 12-24mm are good alternatives. I highly doubt you will be shooting anything that would require you to maintain a 2.8. Even in low light conditions you should use a tripod.
If you want a true fisheye, go with a Peleng 8mm.
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Originally Posted by Nemesis