Originally posted by aerodave Just as a note, I have a very similar shot of the Wright brothers from my K100D....it's just a bit wider view. Mine was 21mm with the kit lens vs. your 10mm, but I was probably a lot farther away.
In that case, I had the same exposure, but did it with f/4, 1/8 sec @ISO 800. I may have risked having too thin a DOF at f/4. But I didn't worry too much about camera shake, even at 1/8 sec due to SR and the short focal length. And in your case, you used an even shorter focal length, so I bet you didn't have to push the ISO as much as you did. But still, excellent samples of the ISO3200 performance in tough lighting.
I think you are talking about the last images posted. That was the first shot I took and was working with the shutter, and wasn't overly confident of the SR, so I used a lengthy 1/15
. I used the sigma 10-20 and not all images are at 10mm, and a lot of them are wide open or slightly stopped down. I was also definitely concerned with the dof.
Also, I think the 1/focal length rule sort of diminishes after a certain point. I don't think there is any difference SR effectiveness of a 10mm lens and a 21mm lens based on shutter speeds. So, I think I couldn't have lowered the shutter much lower than the 1/8th like I did with most others. Usually I wouldn't even go 1/8th...it was adventurous enough.