I suspect the Digitar is the rebadged PC-Super Angulon made for smaller formats. You may want to look at the images made from these with full shifts to look at the edge performance.
Type: Posts; User: Vivek Iyer; Keyword(s):
I suspect the Digitar is the rebadged PC-Super Angulon made for smaller formats. You may want to look at the images made from these with full shifts to look at the edge performance.
Thanks, Andy!
By any chance, is a center filter (ND) is offered in this size (2x2)? Cokin A has all sorts of filters with colors, etc. I apologise if these sound very trivial questions.
Could someone direct me to a source for graduated filters?
TIA.
I better hang on to my 241mm Wollensak Raptar. It behaves unusually for a Tessar.
If it is a biogon, it would be very easy to check from its back focus.
I thought you sold it a long time ago, Klaus?
I have an 135mm f/2 Xero-Nikkor (barrel, no shutter). It is optimized for 2X. Will comfortably cover what you want and more. Drop me a line if interested.
You seem to have seen the Scheneider Variogon. A zoom enlarging lens made for small formats. Nothing special about it.
Buy a normal 105/4 Micronikkor, get rid of the focus bits an try it for yourself.
The 105/4.5 UV-Nikkor is slightly a different design but is more likely to cover a larger area than the 105/4...
Klaus, Another real solution would be to get rid of the focus barrel from an UV-Nikkor.
The 105/4.5 lens (without the long focus mount) should cover 6x9 comfortably.
I would definitely give it (your sample that is) a try. Mine does anyway.
See: http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00Eaap
Klaus, the UV-Sonnar will cover 4x5 at close distances.
Yup! That just poses a small problem of Ozone generation! :)
Yes. Gelatin, plastic base, etc do not absorb X-Ray.
As a consolation, you can use the Americium used in smoke detectors, instead of the depleted Polonium!;)
http://www.epa.gov/radiation/sources/smoke_alarm.htm
Struan, Yes. Barring some special formulation (may not be accessible nowadays), B&W film (or plates) won't work below 300nm.
Solid state sensors: Truly astonishing developments! Back thinned CCD...
Quartz lenses- would mostly be of an ancient origin. If someone makes an UV lens (for any format), there are special glasses available that should do.
See for example:...
The old type (metal barrel) 50/2.8 and the similar vintage 210/5.6 El-Nikkors have the same characteristics as the 63/3.5. This isn't printed anywhere that I know.
These 'nuts' could also...
A friend pointed to this thread. You may want to take a look at Davidhazy's article (year 1999)here: http://www.rit.edu/~andpph/text-demo-scanner-cam.html
He does address many of the issues...