Originally posted by Douglas_of_Sweden You wouldn't have a shot with the [Tokina RMC 17mm/3.5] further open to demonstrate how soft it goes?
We had beautiful weather in Seattle today, so instead of searching for old negatives I decided to take pictures instead
The difference between f/3.5 and f/5.6 is pretty dramatic:
Tokina 17/3.5 at f/3.5 1/500s:
Tokina 17/3.5 at f/5.6 1/160s:
(Both images K20D, ISO 100, tripod, sun just out of frame blocked with hand, processed in lightroom, levels adjustments but no sharpening)
In any case, not as good as the Pentax 12-24 (data not shown) and probably not as good as the DA14 either.
IMHO zoom is very very convenient in the ultrawide range, and the DA12-24 performs very very well. The only reason I keep the Tokina 17 is because it works on film and it's built like a tank.