I don't think you could ever get a sharp photo of anything with two 2X TCs. That's not exactly optical heaven. And your talking 1600mm. Even if the optics were okay, you wold need a 50 pound tripod and a sandbag draped over the lens. Then a little longer delay after mirror up might help. Paul On Sep 1, 2006, at 6:42 PM, 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. > > -- > Thanks, > DougF (KG4LMZ) > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
