Showing posts with label mirror lens. Show all posts
Showing posts with label mirror lens. Show all posts

Monday, June 8, 2020

Mirror lens for reflected UV photography pictorialism style II

Today more about using an older, rather overlooked 250mm mirror lens for reflected UV photography. The lens had been modified to accept a filter in its rear mount and also modified to M42 threads mount due to its orgiginal special mount for cine use. The lens focuses now from infinity to very close, a pleasure to use but due to is long focal length of 250mm still tricky to nail focus.

DOF at one (1) meter (3ft) is as thin as a razor blade when using this 250mm mirror lens and that doughnut shaped bokeh etc. makes it fun to use. Here now shots, quite reminds me of 19th century pictorialism.

Here I used Hypericum and Bidens as targets. Light was sunlight (shade after rain) plus some 365nm Nichia UV LED light .

[click on image to see a larger one]

Hypericum:


whitebalanced it looks like that:


Bidens:


whitebalanced it looks like that:


which shows its dreamlike/surreal/ethereal rendering of images and of course the famous doughnut bubbles mirror lenses produce...

More about using mirror lenses for UV photography HERE

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

Saturday, June 6, 2020

Mirror lens for reflected UV photography pictorialism style

Today about using an older, rather overlooked 250mm mirror lens for reflected UV photography. The lens had been modified to accept a filter in its rear mount and also modified to M42 threads mount due to its orgiginal special mount for cine use. The lens focuses now from infinity to very close, a pleasure to use but due to is long focal length of 250mm still tricky to nail focus.

A whiteish flower, a Treasury flower - Gazania rigens was used for that. Light was sunlight (shade after rain) plus some 365nm Nichia UV LED light .

[click on image to see a larger one]

DOF at one (1) meter (3ft) is as thin as a razor blade when using this 250mm mirror lens and that doughnut shaped bokeh etc. makes it fun to use. Here now shots, quite reminds me of 19th century pictorialism....



whitebalanced it looks like that:


which shows its dreamlike/surreal/ethereal rendering of images and of course the famous doughnut bubbles mirror lenses produce...

More about using mirror lenses for UV photography HERE

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

Tuesday, October 23, 2018

LDM-1 long distance microscope for reflected UV (ultraviolet) light and African Violet

Today shots of an African Violet flower in reflected ultraviolet photography using a UV filter stack consisting of SCHOTT UG1 + BG40. All shots were done at f11. Lens was a rather rare LDM-1(s) 800mm mirror only lens, the close-up using the AP300 achromatic cloe-up lens, which was once sold with this lens system. Light source used was a 365nm Nichia UV LED light.

[click on image to see a larger one]

LDM-1(s) alone:
 

LDM-1(s) with the AP300 achromatic close-up lens:
 

And now here some comparison images I have shot with my "work horse" UV-Nikkor 105mm plus Baader-U filter.

Overview:
 

Closeup at closest focusing distance:
 

I have written about this LDM-1 lens previously HERE
 
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

Tuesday, November 15, 2016

Scorpio Supermoon in reflected UV (ultraviolet) light photography

Today a shot of the Scorpion Supermoon as of 11-14-2016 in reflected ultraviolet photography using my "work horse" UV filter, the Baader-U filter. All shots were done at f8. Lens was a rather rare LDM-1 800mm mirror only lens.

[click on image to see a larger one]

Reflected UV light (using Baader-U filter):
 

I have written about the Moon in UV previously HERE
 
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