Wednesday, February 6, 2013

Zeiss UV-Planar 60mm lens vs 60mm enlarger lens for reflected UV photography

Today about comparing a special UV lens with a conventional, but UV capable enlarger lens. I have done a similar comparison previously here and here. I'm using a beautiful yellow/red Phalaenopsis flower, for that as well as my "work horse" UV filter, the Baader-U filter. Lenses used are a Zeiss UV-Planar 4/60mm as well as a capable for UV 4.5/60mm enlarger lens that will be revealed here later. Light source was an UV enhanced Xenon flash. All shots done at f8.

[click on image to see a larger one]

Visible light image for comparison:

1) UV Planar f4/60mm: "standard" UV image using Baader-U filter:

2) Enlarger lens: "standard" UV image using Baader-U filter:

It gets pretty obvious that this enlarger lens reaches close to the UV-Planar lens, yet it is quite a bit away in terms of sharpness + contrast. But it is a capable lens it seems. Quite a useful lens!

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

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