Some side-by side shot comparisons. I already posted in a separate thread, but if anyone is looking for such, it would be easier to find as a dedicated thread. I'll let you draw your own conclusions as to lenses or (lack of) consistency for the comparisons. Oly 12-50mm vs. Primes - a set on Flickr Oh, for anyone wanting to try such a comparison, it appears you want to line-up the front of the glass distance to subject as the same for comparing two lenses. Here, at first I tried lining up the sensor distances. Empirically, that doesn't seem to work.