Archived posting to the Leica Users Group, 2006/12/15

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Subject: [Leica] Flowers in Ultra-Violet
From: len-1 at comcast.net (Leonard Taupier)
Date: Fri Dec 15 14:06:27 2006
References: <7D42FCC1-561F-4CA3-B82E-FD1729356E6B@comcast.net> <07AC69D3-32A0-4ECA-B4B2-38EFF6EBF498@mindspring.com> <B55F888C-8290-4C0B-A5F9-47961B0C1C52@mac.com>

George,

That's a very interesting observation. The UV_2, pansy probably shows  
it the most. The dark petals are actually a bright yellow and the  
lighter pink is dark brown. In daylight the lines in the petals  
hardly show at all. It's like the UV penetrates the skin of the  
flower and goes deeper. The spots on the petals are pollen and also  
hardly show.

Ultra-violet photography is mostly used in police work to show where  
children were abused and the areas of abuse no longer are visible in  
normal light. It actually shows the damaged blood vessels under the  
skin. I don't know how this works with some flowers.

Thanks for the comment.

And Luis, don't look at these flowers as normal photos. The UV  
totally changes the character of the flower. But as you say I'll keep  
experimenting. I'm just running out of house flowers.

Len


On Dec 15, 2006, at 4:38 PM, Lottermoser George wrote:

> These images have wonderful density (thickness) weight - I don't  
> quite know what word to use. The flowers almost feel as if they're  
> some sort of metallic alloy or something heavy and hard - unflower  
> like. Does anyone else feel this?
>
> Regards,
> George Lottermoser
> george@imagist.com
>
> On Dec 15, 2006, at 3:45 PM, Leonard Taupier wrote:
>
>
>> The flowers were exposed with Ultra-Violet light from a black  
>> light in an otherwise totally dark room.
>>
>> <http://gallery.leica-users.org/v/LeonardT/UV/UV_1.jpg.html>
>>
>> <http://gallery.leica-users.org/v/LeonardT/UV/UV_2.jpg.html>
>>
>> Please comment on what you think.
>>
>> The camera was a D2X at 20 sec exposure
>> Lens an El-Nikkor 105mm f5.6  at f11 mounted in a Nikon PB4  
>> bellows with a homemade F to LTM adapter
>> Focus was in incandescent light.
>> Exposure black light only, using a hot mirror filter and a B+H 403  
>> UV bandpass filter.
>>
>> No attempt was made to color correct. The 403 filter is a nearly  
>> black, red filter.
>>
>> I tried the same setup using a D200 and even with a 6 stop  
>> exposure increase no image was produced.  Totally black.
>>
>> As a retired engineer I can't stop experimenting. I just think  
>> it's fun. Hope you enjoy it.
>>
>> Len
>>
>
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> Leica Users Group.
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In reply to: Message from len-1 at comcast.net (Leonard Taupier) ([Leica] Flowers in Ultra-Violet)
Message from ricc at mindspring.com (Ric Carter) ([Leica] Flowers in Ultra-Violet)
Message from imagist3 at mac.com (Lottermoser George) ([Leica] Flowers in Ultra-Violet)