[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 http://www.pbase.com/kds315/uv_photos

[UV] RODAGON lenses for UV

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

Rodagon (old "zebra" type) 5.6/150mm, 5.6/135mm, 4/80mm (newer type) and the modern 4/75mm Apo Rodagon D

[click on image to see a larger one]

UV transmission graph:



In terms of UV transmission, quite unexpected good UV transmission, surprisingly also the Apo Rodagon D type. Not having done focus shift tests, but would assume it's there.

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

[UV] STEINHEIL lenses for UV

As I was testing (again) lenses for UV photography, so I ran a few more spectrometric tests now on STEINHEIL lenses, which might be of interest. These are all M42 thread mount taking lenses in silver aluminum barrel.

[click on image to see a larger one]

UV transmission graph:


In terms of UV transmission, all are quite good (except the Culminar) but all exhibit focus shift.

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