Originally posted by brofkand For architecture/landscape, a tripod is a good idea.
True, but these shots were taken around noon on an overcast day. There was plenty of light. Am I crazy to expect more than 1/3 of my shots be sharp at 18mm 1/25s with SR at f/8?
Going by the f/1.5 rule of thumb, 1/30s should be sufficient to obtain sharp pictures on the majority of shots. SR offers up to 2.5 stops of shake reduction, which works
best at lower focal lengths, so even if we round down to 2 stops improvement, I should be able to shoot at 1/8 without blur in the majority of my shots.
Falk Lumo did some analysis and provided a handy chart at the bottom of this page to determine shutter speed at focal length for varying levels of typical sharpness:
Falk Lumo: Pentax shake reduction revisited
Based on this I should be OK. I definitely don't think I had mega wrist twitch that day either. :P
Like I said earlier, this really only affected one shoot, so I bet it was a software glitch, I just wanted to see if anyone else noticed any problems.