Originally posted by ManuH The 12-24 has not been tested by Photozone at 15mm, only 12mm, 18mm and 24mm which makes it hard to make actual comparisons.
True. But interpolation suggests it would come down as I suggested.
Quote: But the DA* 16-50mm beats both lens at f/4, by a hair maybe
A hair indeed - and to be fair, that's all the DA15 beats the 16-50 or the DA12-24 by at f/5.6 or f/8. Realistically, there's no point in using sharpness as the main differentiator between these lenses - they are all excellent.
Quote: Unfortunately at 16mm, the DA* has a lot of barrel distortion.
And CA is off the scale compared to the DA15. Still, a probably not as big an issue in practice as the more mundane details: DA15 is 15mm only but is a very small lens, the DA12-24 and DA60-50 are zooms but are much larger. That's really all it comes down to.