Tuesday, March 9, 2010

Carl Zeiss UV-Planar 4/60mm

Today let me present you a lens which was thought to have gotten lost, but now it finally made it here after more then 4 months of travel: The extremely rare (5 or so ever made; that second one of mine is #4) Carl Zeiss UV-Planar 4/60mm lens. Zeiss serial number range #258xxx stands for special order lenses, prototypes etc. Funny that the Zeiss files don't even have that one listed...

[click on image to see a larger one]

A lens made for UV Photography and UV enlarging which consists of quartz and special glass. Symmetrical Gauss design, 6 lenses in 4 groups. Color corrected for 320-450nm, transmits down to 300nm. Full data is here.  

If anyone wonders about the lens coating: Zeiss has applied a special lens coating which transmits UV light, thus it does not look like a normal multicoated lens.

Stay tuned, more will follow on that fascinating subject...

More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos