On Thu, Nov 11, 2010 at 08:54:27AM +0530, Subash wrote: > hi, > > does the pentax 1.7x TC work well with the A*300/4 (with the 'limited' > AF functionality it brings to manual focus lenses)? the user manual of > the TC does not mention this lens in the list of compatible lenses... if > things go as they should, i just might enabled with these two...
I believe the TC is only claimed to work with lenses faster than f4.0 (probably because the auto-focus logic claims to want a lens of f5.6 or faster, and a 1.7TC on a f4 lens ends up with a maximum aperture of f6.8) The AF1.7x works just fine with the A* 300/2.8 ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
