Hi Paul some days ago I asked your for some comparison shots with your Vivitar Series 1 zoom at 210mm 3.5 together with the A2x-s Pentax converter.....
Since I still and only use film, we can not really do a fair comparison, but to get an idea, here is a link of a handheld swan shot at sunrise with the Pentax SFXn, Pentax A70-210mm zoom and the A2x-s Pentax converter at F 4 420mm, distance ~15 meters. I used a polarizer too and Superia ISO 400 negative film. I scanned the negative at 3200 dpi with the Canon scanner and adjusted the uncropped image for the web. I think, with a digital Pentax, it would have been even better, what do you think? Have you got anything with your Vivitar combo to compare in between? I like the warm red coloring of the morning sunrise and the expression of the swans here a lot: http://www.photo.net/photodb/photo?photo_id=3344598&size=lg Of course I had a lot of bad photos (unsharp, wrong exposure) with this lens combo on my little morning test trip too..... I have some more of the good ones to post if you like to watch them... greetings Markus
