On Thu, 16 Aug 2018 11:12:27 -0400 (GMT-04:00) Ken Waller <[email protected]> wrote:
> I've always only used Pentax TCs on Pentax lenses. > When I shot Tamron lenses I used their TCS. > > Never had noticeable quality issues on any of those setups. thank you Ken for your inputs. i'll have to use the tamron tc and see how it goes.... > -----Original Message----- > >From: Paul Stenquist <[email protected]> > > >Subject: Re: question about zooms and TCs > > > >Any image degradation it foes cause isn’t visible to the naked eye. > >Thus I would say there is no degradation. Of course we’re talking > >about a $450 TC on a $2000 lens. > > > >Paul > > > >> On Aug 16, 2018, at 1:21 AM, Subash Jeyan <[email protected]> > >> wrote: > >> > >> thanks Paul. it's good to know it doesn't cause too much of an > >> image degradation.... > >> > >>> On Thu, Aug 16, 2018 at 10:41 AM Paul Sorenson > >>> <[email protected]> wrote: > >>> > >>> I use the Pentax DA 1.4 AW TC with the the 55-300 and it's a fine > >>> combination. > >>> > >>> -p > >>> > >>> > >>>> On 8/15/2018 10:02 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 > >>>> > >>> > >>> -- > >>> Paul Sorenson > >>> Studio1941 > >>> > >>> Sooner or later "different" scares people. -- 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.
