I have a Pentax *istD w/a Pentax 100-300 F4/5.6. I shot from about 8:45-10:45EST. Took about 40-50 pics. During the very early stages I shot around 1/750 f8 and as it go closer to being fully eclipsed I was down around 1/1 or 1/1.5 and f5.6. Everything I shot was at 400 ISO