Saturday, January 29, 2011

Psychedelic Lilly - a UV and VIS comparison EL-Nikkor 80mm vs 105mm

Today I found a nice flower, a "Stargazer Lilly", so I thought that would be wonderful to show the beauty of that flower using the newly rediscovered use of older (chrome/black) EL-Nikkor enlarger lenses in visible light, but also in invisible UV.

All shots were done at f8, ISO400, 1/160s using Xenon flash, exposure adjusted using flash power control and ND filters. UV shots were done using the Baader-U filter.

[click on image to see a larger one]

Here now a VIS-UV differential using the EL-Nikkor 5.6/80mm:


and yes, quite a nice lens with quite good UV transmission and very little focus shift.

and here using the 5.6/105mm EL-Nikkor:


Quite more focus shift, but also quite good UV transmission.

For comparison here the VIS shot using the EL-Nikkor 5.6/80mm:


and using the 5.6/105mm EL-Nikkor:


Finally now the UV shot using the EL-Nikkor 5.6/80mm:


and using the 5.6/105mm EL-Nikkor:


So, if you look for a cheap lens, have an eye on these pretty good enlarger lenses!


P.S.: the 80mm EL-Nikkor (the older, chrome black full metal type) has an adapter ring on its base with outer M39x26tpi screw mount (Leica enlarger mount). Beneath it is a M25 thread for older #00 shutters. Company Schneider Optics offers adapter rings, if that one should be missing (oder code 92-013251).
P.P.S.: the filter thread of that older EL-Nikkor 80mm is 34.5mm, which is pretty uncommon, as me if you need an adapter ring.

[A remark on the 80mm EL-Nikkor, I tried outside and infinity tests with it and unfortunately it seems to have a prominent large UV hotspot which renders it unuseable for that...]


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