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Creeping Zinnia - different filters

 
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kds315*



Joined: 02 Feb 2009
Posts: 203

PostPosted: Sun Apr 26, 2009 3:24 pm    Post subject: Creeping Zinnia - different filters Reply with quote

A walk over the local market brought a nice Creeping Zinna to my balcony.

An ideal target to test out the UV enhanced High Power Xenon, the XUVIR "one shot" filter, the Xcut2 filter as well as the well known Baader U filter.

Equipment used was: Nikon D70 (unmodified), UV Nikkor 105mm lens @ ISO400, f11, 1/180sec.

VIS using XCUT2 filter (400-650nm):


UV using Baader U-filter (310-390nm):


XUVIR multispectral filter (300-100nm), UV Flash:


XUVIR filter (30-1000nm), unfiltered Xenon flash for multispectral recording


UV induced fluorescence using XCUT2 filter (400-650nm), UV flash (at daylight):


P.S.: Creeping Zinnias (Sanvitalia procumbens) UV pattern is not that easy to record, it need scareful filtering and a good UV source. The reflection measurement proves that. Low UV reflection (<10%) while high IR reflection (>50%):


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Klaus

http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
http://photographyoftheinvisibleworld.blogspot.com/ my UV diary
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rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 19978
Location: Richland, Washington State, USA

PostPosted: Thu Apr 30, 2009 9:37 am    Post subject: Reply with quote

We forum Admins have kept this one sitting around in queue for a few days, trying to figure out how to work it in around the regular posting rules of 3 images per day per gallery.

In general, we would prefer to see comparative and sequence studies prepared in the style of THIS OTHER ONE, using small images as links to larger backup images. That way the page loads rapidly and fits more on screen for casual viewers, while people who want to study more closely can still access higher resolution.

In the case of the current topic, we finally decided it was better to just allow and explain the exception. Trickling this topic out over several days would make no sense, and reformatting it to fit the recommendation would take more time than it would be worth. So, let's just make a note for future reference.

Many thanks to Klaus for the careful and interesting work, and also for graciously putting up with our nitpicking!

--Rik
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Franz Neidl



Joined: 14 Jan 2009
Posts: 747
Location: Italy

PostPosted: Sat May 02, 2009 1:54 am    Post subject: Reply with quote

Hallo Klaus,

congratulation for your pictures. I like them very much. Is the XUVIR filter something new, better than the Baader filter? Where I can get more information about it?

Franz
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kds315*



Joined: 02 Feb 2009
Posts: 203

PostPosted: Mon May 04, 2009 1:29 pm    Post subject: Reply with quote

@Rick: that for allowing in that case multiple images!

@Franz: The sol called X-filters are my owns developments and some may be bought directly from me, they are not commercially available. Others are from client projects and I am not allowed to pass on info about them nor sell them....
_________________
Klaus

http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
http://photographyoftheinvisibleworld.blogspot.com/ my UV diary
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