Originally posted by Marc Sabatella Interesting that you rate the 16-50 so low, Robin. Others would put it the "superlative" category, along with a couple of the "very good" lenses. Just goes to show the extremely subject nature of these things.
The MTF has been tested (Photozone after
three copies) to be significantly worse than either the DA17-17 or the DA16-45. For example, border MTF goes down to 1160 while the DA16-45 is never less than 1740. That's not a small difference, it's huge! My own photos with the lens bore this out. I am happier using the DA16-45 for landscapes, my shots of street art (yes, some shoot walls!) etc.
I would not rate a lens that costs much more, has no better CA, worse distortion, is far too huge, heavy and has a failing SDM motor that Pentax have refused to say anything official about. I am tempted to rate it even lower, to be honest. I would prefer the WR version of the kit lens. This is not based on subjective but objective measures of usefulness.
In terms of personal bias, I put my cards on the table when I said that "I value small size, light weight, excellent handling, solid build and great IQ. No zoom lens is going to get the highest possible rating on my scale." If I was a Canon-type shooter I might rate some of the telephoto lenses in the superlative category. But I have never had a use for them. Further, I would seriously have to question why anyone would use the Pentax system if birding, sports, etc. was their primary interest.
I simply don't think any other lenses belong in the same category at the FA Limiteds.