Sunday, January 30, 2011

Psychedelic Lilly - a UV and VIS comparison Noflexar 35mm vs EL-Nikkor 80mm

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A really nice flower, a "Stargazer Lilly", so let's see how the beauty of that flower will look like through the well known No...
Saturday, January 29, 2011

[UV] Lenses tested good for UV

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This is simply a collection of links to tests I have done for various lenses in terms of UV transmission and UV focus shift. Some also conta...

How to determine the length of a focusing helicoid

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I have been asked, if there is a way to simply determine the needed length of a focusing helicoid to reach infinity focus [when mounting for...

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

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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...
Tuesday, January 25, 2011

Zeiss contest "Light is my Language" : made it to the last 10!

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Well, just out of curiosity and since the title “Light is my Language” matches the intentions of my work, I submitted that photo at flickr ...
Sunday, January 23, 2011

[UV] EL-Nikkor 75mm for UV - old vs. new type

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As I was testing (again) lenses for UV photography, I had done spectrometric tests on Nikon EL-Nikkor enlarger lenses . So now I found a new...
Saturday, January 22, 2011

[UV] COMPONON lenses for UV

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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...