On Fri, 1 Sep 2006, Doug Franklin wrote:
> Digital Image Studio wrote: > >> Even two seconds may not be long enough for a large heavy well damped >> rig, think very low frequency oscillations as a function of depressing >> the shutter. > > Two seconds is /not/ enough when I'm trying to get moon photos with a > 400/5.6 and two 2X t/c's on the *ist D. I haven't gotten a sharp one > yet, and I've tried everything I can think of so. > I would think that at that kind of focal length you would need a drive to compensate for the Earth's rotation. What shutter speed are you using? -R > -- > Thanks, > DougF (KG4LMZ) > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
