Saturday, January 22, 2011

[UV] COMPONON lenses for UV

As I was testing (again) lenses for UV photography, so I ran a few more spectrometric tests now on Schneider COMPONON lenses, which might be of interest. These are thread mount enlarger lenses:

Componon (old black types) 5.6/150mm, 5.6/135mm, 5.6/105mm, Componon-S 5.6/100mm

[click on image to see a larger one]

UV transmission graph:

In terms of UV transmission, all are not great except the 135mm, which is quite different. I guess they had used a special coating for the others, but not the 135mm (transmission looks Rodagon like). All I tested have focus shift.

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

More info on this very interesting field may be found on my site