« on: October 08, 2012, 12:21:05 PM »
Wow, had no idea this was possible. Now I have to go back and read the AF guide in its entirety.
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Imagine a picture of a little wildflower filling one side of the frame with a field and stream in the midground and the distant mountains in the background...and all of it in sharp focus except for the grass right underneath the flower with dreamy bokeh.
I got a 5D Mark III last week and the first lens to undergo focus testing in my studio was that Sigma 50. I was relieved to see that it now focuses faster and more consistently. I think I dialed in +2 on the micro-adjust. Images were pretty sharp wide open and extremely sharp at f2.0.
5dmk2 and d800 same exposure time, f-stop base iso
5dmk2 developed in camera raw and DPP and d800 in camera raw so that details/information can be seen equally in the white house wall and in the white towel in front of the garden house =high lights reproduction.
Then we look in the shadows, low levels , an area is selected in the low levels and auto contrast is laid, auto contrast are showing levels , details, noise in the selected area , no personal influence , photoshop is calculating the signal level from the pixels values. This is the results of 2-3 extra stops DR in low levels. And how to use it- it is up to the photographer and the skills to use photoshop
I have lent the raw files to a number of talented members at dpreview , they have all checked and verified the results by them selves.