my experience with the 1.7x and A*300/4 mirrors yours. i did not keep the tc and the lens however...
On Fri, 17 Aug 2018 12:53:39 -0400 "P. J. Alling" <[email protected]> wrote: > I've gotten pretty good results with the 1.7x AF adapter, (not > exactly a TC but it functions as such), with various zoom lenses. It > does work better with primes, but at most screen sizes and reasonable > print sizes, it gives better results with primes. On the other hand > the prime I use it with most is the A*300 f4, a lens that's known for > trading ultimate sharpness, for being very compact. > > > On 8/15/2018 11:02 PM, Subash Jeyan 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 -- 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.
