Originally posted by selar What I'm hearing is that the DA*50-135 is better than this lens - does anyone have anything different to say?
I haven't found either one to be hands-down better...they render sort of different. These are my conclusions from real life shooting:
The 135 has better sharpness (detail resolving), (subjectively) more pleasing colors, and wins hands down on flare resistance. The only problem seems to be AF speed, which feels a lot slower than the Sigma or a screwdrive, and there's a delay. Well, and the SDM failures...
The 150 has better contrast, faster AF, and (subjectively) has better bokeh. I think flare resistance it this lens' biggest weakness, it's not very good to begin with and it get's horrible with filters. The Pentax seems to give almost the same output regardless of filters.
The 135 seems to be more of a modern lens, the 150 seems to sport older lens technology (not very flare resistance, bokeh fringing). Also, the Pentax is a tad warmer than the Sigma.
I guess most folks will like the Pentax rendering better, but I prefer the slightly edgier look of the Sigma.