[click on image to see a larger one]
Visible light image:
UV image using Baader-U filter (approx. 320-395nm, effective peak approx. 375nm):
UV image using Jupiter-U filter (approx. 280-385nm, effective peak approx. 365nm):
SOLIGOR lens transmission:
As I have written before, the Kuribayashi 35mm lens is quite a useful one for UV, sharp and contrasty and only having a 1.03% focus shift. The Soligor 35mm shows 1.3% focus shift and also some other differences, like a needed 2/3 stop higher exposure, as its UV transmission is lower than the one of the Kuribayashi lens. In terms of sharpness they are about even, but the Kuribayashi has the higher contrast. So in total the Soligor 35mm is a useful lens, yet reaches not quite the Kuribayashi.
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
