07-13-2010, 01:40 PM
Why are you shooting wide open? What reason do you have for that? With wide angles.. one really does not use big apertures for a shallow DOF. And it was sunny. So... again, why are you "testing" this extreme wide angle lens wide open?
Does not make much sense to me....
Also, why are you looking at crops from different parts of the frame (and as such, of different distances, while focus is only in one plane)? Focus on something and look at that focussed part at 100%, not at unfocussed parts.
And do close down the lens to normal values! Then you can see how the lens performs. One would only use wide open with very up close subjects to try get subject isolation, or with very low light conditions where a long exposure is not an option.
Does not make much sense to me....
Also, why are you looking at crops from different parts of the frame (and as such, of different distances, while focus is only in one plane)? Focus on something and look at that focussed part at 100%, not at unfocussed parts.
And do close down the lens to normal values! Then you can see how the lens performs. One would only use wide open with very up close subjects to try get subject isolation, or with very low light conditions where a long exposure is not an option.