Originally posted by enoxatnep I guess another question I have is, on the 16-50, is there vignetting at 16 mm with a circular polarizer attached? With it on my 12-24, I can't go below 14 mm without strong vignetting, so I'm curious about this on the 16-50.
As others said, a slim filter shouldnīt produce vignetting but I wanted to point out it is really tricky / not possible to use a polarizer with focal lengths below 24mm..
On the main question, Iīd go with the DA16-50. I do not own the DA12-24 but at f/4, the DA16-50 produces edge to edge sharp pictures at any FL. Better even at f/5.6.
You will loose 4 important milimeters, but you will gain a 1 light stop, WR, more range, 9 aperture blade.
You can add a wider zoom if you find you miss those 4mm