[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]
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 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
The base units seems to cost just under 2000EUR.
The individual extension modules should be around 200EUR or so.
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 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 ...
[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).
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.
[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='
' />