f6.3 should be fine for small birds at a considerable distance where you’re cropping down to about half of the full frame. But for bigger birds, particularly those facing camera, I would go to f8. If you focus on the eye, some softness elsewhere is tolerable.
> On Apr 6, 2017, at 11:33 AM, Darren Addy <[email protected]> wrote: > > On Thu, Apr 6, 2017 at 10:12 AM, Paul Stenquist <[email protected]> wrote: >> With the Sigma long lens I would shoot at f5.6 or f8 at 1/500th > > The Bigma has a maximum aperture of f/6.3 at 500mm (and, of course, > the DOF is thin). > > Darren Addy > Kearney, Nebraska > -- > “The Earth is Art, The Photographer is only a Witness ” > ― Yann Arthus-Bertrand, Earth from Above > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
