Kowa Prominar 500mm f/5.6 SL - Printable Version +- Opticallimits (https://forum.opticallimits.com) +-- Forum: Forums (https://forum.opticallimits.com/forumdisplay.php?fid=4) +--- Forum: Just Talk (https://forum.opticallimits.com/forumdisplay.php?fid=17) +--- Thread: Kowa Prominar 500mm f/5.6 SL (/showthread.php?tid=3405) |
Kowa Prominar 500mm f/5.6 SL - Klaus - 02-04-2011 [url="http://www.kowa-prominar.ne.jp/pro/lens/feature.htm"]http://www.kowa-prom...ens/feature.htm[/url] and some more in English: [url="http://www.kowa-prominar.com/new/telephoto101103.htm"]http://www.kowa-prominar.com/new/telephoto101103.htm[/url] Quite interesting lens with a module system and ... breathtaking MTFs actually (if true). Depending on the configuration: 1x CaF2 (!) element 2-3x elements dcwatch has more info and samples @ [url="http://dc.watch.impress.co.jp/docs/review/date_lens/20110204_424620.html"]http://dc.watch.impr...204_424620.html[/url] Kowa Prominar 500mm f/5.6 SL - backcountryskier - 02-04-2011 Interesting stuff! Bokeh looks a heck of a lot better than reflectors. 500/5.6 would not be easy to operate, manual focus and no IS of course. Any idea of pricing? Kowa Prominar 500mm f/5.6 SL - genotypewriter - 02-04-2011 [quote name='backcountryskier' timestamp='1296795791' post='5833'] Interesting stuff! Bokeh looks a heck of a lot better than reflectors. 500/5.6 would not be easy to operate, manual focus and no IS of course. Any idea of pricing? [/quote] 1 fluorite element close to ~90mm in diameter + 2-3 extra low dispersion elements = can't be cheap. I estimate the prices to be around that of a Sigma etc. 300 2.8 lens or a bit less. GTW Kowa Prominar 500mm f/5.6 SL - Klaus - 02-04-2011 The base units seems to cost just under 2000EUR. The individual extension modules should be around 200EUR or so. Kowa Prominar 500mm f/5.6 SL - netrex - 02-04-2011 It looked very nice indeed, until I saw the price <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='' /> Too much for me at least, but then most things are. It would be fun to test it though. Kowa Prominar 500mm f/5.6 SL - Klaus - 02-04-2011 [quote name='Alexander ' timestamp='1296820493' post='5838'] It looked very nice indeed, until I saw the price <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='' /> Too much for me at least, but then most things are. It would be fun to test it though. [/quote] I canceled the Walimex mirror test, BTW. The measured resolution was well below the minimum mark ... Kowa Prominar 500mm f/5.6 SL - netrex - 02-04-2011 The Walimex? Kowa Prominar 500mm f/5.6 SL - Klaus - 02-04-2011 [quote name='Alexander ' timestamp='1296828933' post='5840'] The Walimex? [/quote] A few weeks ago I asked whether there was any interest in a test of a 800mm f/8 mirror lens (made by Walimex aka Samyang). Kowa Prominar 500mm f/5.6 SL - netrex - 02-04-2011 Ah, I see, my memory isn't always good <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='' /> Too bad it wasn't good enough. Would have been interesting. Kowa Prominar 500mm f/5.6 SL - genotypewriter - 02-04-2011 [quote name='Klaus' timestamp='1296804093' post='5835'] The base units seems to cost just under 2000EUR. The individual extension modules should be around 200EUR or so. [/quote] Wow... my price guess of around or under USD3000 (2200 EUR) was spot on! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/biggrin.gif' class='bbc_emoticon' alt='' /> |