Originally Posted by Dhruba
Did you find the f5.6 makes this lens a bit dark? Is this one of their APO lenses?
Yes it is an APO lens. The lens is darker than an 2.8 lens, but I cannot tell much of a difference at all between my 16-45mm which is f4. I would consider this lens a classic Bug lens, which you would use in relatively good lighting situations. Just took a couple of test shots and I don't think it's dark at all.