Hi Peter > your post confirms what I read in various online reviews and > comments. Now my only concern is if it is compatible with digital pentaxes.
It was pointed out to me a short time ago that there is very little difference in the Sigma EX macro lenses and the DG equivalents, IIRC it was Mark Roberts. Indeed the 50mm f/2.8 has almost identical spec to the earlier EX lens, maybe a slightly different coating on the rear element but I doubt it, I'll let you draw your own conclusions to that. Best, John
