The longest lens i have for 4x5 is 150mm. Is there a good place to start when looking for convertible lenses? Keh doesn't seem to have a lot. any recommendations?
The longest lens i have for 4x5 is 150mm. Is there a good place to start when looking for convertible lenses? Keh doesn't seem to have a lot. any recommendations?
While they might not call them "convertable" any Schneider Symmar (not Symmar-S) is a true convertable and you can find these readily. Be very sure that you have enough bellows for a "converted" lens. Your 150mm (if convertable) would be about a 300, and actually take more bellows than a non-converted 300mm. Look back thru the online lists of LF lenses and look for Schneider Symmar (and not "Symmar-S)
But if I were you, I would just look for longer focal length lenses, rather than convertable ones. They will be sharper than a converted lens.
How about http://cgi.ebay.com/Turner-Reich-Gun...QQcmdZViewItem
or
http://cgi.ebay.com/TURNER-REICH-TRI...QQcmdZViewItem
If your pockets are deep, there's this:
http://cgi.ebay.com/Nikon-Nikkor-T-E...QQcmdZViewItem
But what do you want to do with longer glass.
You might simply need a 240 or 270 mm. Have you tried longer glass from a friend to see what fits your vision? I mean a quick drive out the Carroll County with a lunch stop at Baugher's might be in order. Their pie is excellent.
You also might search for either the Acuton or Caltar 215mm. They appear to be one and the same from Ilex and usually go for somewhere around $150 at the auction site. A great convertible lens with fine sharpness at every focal length.
"One of the greatest necessities in America is to discover creative solitude." Carl Sandburg
In addition to the 215/355 4.8 Acuton there is also a 150/247 4.8 Acuton both fine performers. the 150/247 covers 5x7 and is a bit more rare than the 215/355
Find a TR 4x5 triple convertible.
May I suggest you go to the following web site and do some reading thru the vast booklets of lens this has to offer ; you will find that some mfg's state that their doppel or double anastigmat lens are convertable; I do not profess any knowledge on that subject; so go here cameraeccentric.com and have fun learning:
Lauren MacIntosh
Whats in back of you is the past and whats in front of you is the future now in the middle you have choices to make for yourself:
you might poke around for a symmar 210/370.
it is a nice lens, as long as you have enough draw for the 370 part ..
Here's a little table of Symmars with focal length of rear cell and minimum extension for infinity focus with the rear cell alone:
100 / 175 - 215
135 / 235 - 285
150 / 265 - 325
180 / 315 - 380
210 / 370 - 415
240 / 420 - 500
300 / 500 - 610
360 / 620 - 760
as you can see you need quite a lot more bellows draw with a converted lens than with a normal lens of the same focal length.
re: "240 / 420 - 500"
So my new 240/420 Symmar will require 1000mm of bellows to shoot 1:1?
That puts a tiny damper on my purchase ( but then again I really wanted the shutter for the 305mm G-Claron, so the Symmar lens is a bonus)
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