Originally posted by Paul the Sunman On the other hand, the DA 55-300 is quite close.
Not close enough. It's OK at 55mm, then the vignetting gets quite bad until it disappears at about 200mm, only to return again at the long end.
It is definitely a crop lens.
---------- Post added 18-08-17 at 07:00 AM ----------
Originally posted by Pentax_WA Great shots. Which filter system do you use for long exposure pictures? Also , what aperture is the sharpest? I have been reading online anything above 8 is not sharp.
Thank you, but they really are holiday shots rather than serious attempts at landscape photography.
I don't have a filter system for this lens. If I want a long exposure I use the K-1's multiple exposure function to simulate the same thing.
I rarely go above f/11 with any lens, mainly to avoid diffraction, which can decrease resolution with any lens. While not aperture-specific, the DFA15-30 seems to be particularly capable of inducing shutter shock on the K-1 at intermediate shutter speeds; because of that I tend to turn SR *off* unless it is really needed, i.e. below about 1/50 hand held. As a good proportion of landscapes are shot from a tripod that isn't much of an issue though.