5D II - Auto ISO

Interesting.

Its interesting to see how the approach varies. I set my ISO at 100 then my aperture and go from there. But, I am definitely not afraid to use any auto settings. In fact, I will sometimes use the FULL AUTO feature just to get a general idea of what the camera is thinking...then I will change accordingly for DOF etc.

One thing I need a better handle on is finding the sweet spot for each lens I own. I know that each lens has it's own "sweet spot". I need to get better acclimated as to what those settings are.
 
to find the "sweet spot" of my lenses I like to do a horizontal blind test. Take a few shots on AV mode of regular horizontal blinds. start from your lowest aperture to your highest. for many lenses, you will notice that the wide open apertures will have some vignetting. Once the aperture is reached that no vigetting is present you will probably be around your sweet spot in terms of sharpness (for cropped sensors close the aperture 1 or two more times since you might not be seeing the vigetting) Your lens will probably have a range of a sweet spot also (i.e. f4-f11) start going past f13 on most lenses and you will loose some sharpness due to diffraction.

Of course you should also confirm the sharpness by actually looking at the photo on the computer without any sharpening applied (shoot in RAW not JPEG).
 
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