Originally posted by Lowell Goudge I also agree with the fill flash, sometimes, I shot a lot using fill flash with my *istD, but have gotten away from it lately, or should I say with later bodies. Part of this was due to Pentax discontinuing support for TTL flash. Combined with their lack of an AF teleconverter for a very long time. PTTL is very difficult to deal with when a TC that does not report true aperture is used
That's very interesting to know. I'm not currently using a pTTL flash but have considered it as a future option. Perhaps I'm better off remaining with manual and autoflash.
Originally posted by Lowell Goudge Image size = subject size x focal length / distance
That's of course very true but I suspect it's more than that — that the DA* 300 and 1.4x TC are actually optimized for shorter than longer distances. I have an Olympus 100-400 and that lens is definitely sharper at longer distances than the Pentax combination, while there are about equal at shorter distances.
Nuthatch in the forest: