thank you. while the sigma, one assumes, convey the multiplied focal length to the body, the pentax tc does. does that make any difference to the SR?
On Thu, Aug 16, 2018 at 9:59 AM John Francis <[email protected]> wrote: > > > i'm going on a winter trek to the himalayas in november. planning to do > > some birding also along the way and since the sigma 150-500, at almost > > 2kg, is too heavy for that i was looking at alternatives. > > > > i have a tamron 1.4x pz-af (af works with sdm too) and i was wondering > > if i could use that with the da 55-300. i did some googling and the > > results surprised me. it looks, in spite of all the conventional wisdom > > that TCs can only be used with a sharp prime lens, people have got good > > results. see the (old) thread here: > > https://www.dpreview.com/forums/thread/3680410 > > > > have any of you used 55-300, or any other zoom, with a tc? if so i'll be > > interested in how that went... > > > > thanks, subash > > I've used my FA* 80-200 with a ?Sigma? AF 1.4x, and my DA* 60-250 with the > new HD Pentax-DA 1.4x. Both produced perfectly acceptable results for me > (shooting hand-held). > > > -- > 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.
