i am getting the tc only in the first week of september so will try the combination then. only the pentax 1.4x conveys the correct focal length to the body for optimal SR. i don't know if it can be entered manually but i'll check.
On Thu, 16 Aug 2018 14:28:54 -0400 Mark C <[email protected]> wrote: > If you have both you can test them out. My experience has been that > unless the teleconverter and lens are designed to be used together, > results can be unpredictable. Sometimes great, sometimes not. > > If you are planning on using the setup with shake reduction enabled, > check to see of the TC sends adjusted focal length info to the > camera, or if just passes through the the lens focal length. I think > that for image stabilization to work optimally the camera should be > set to the adjusted focal length (lens focal length X teleconverter > power), so you may nee to manually set it. > > Mark > > 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... -- 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.
