A new UV transmitting filter: LUV U-2

Joined
May 30, 2006
Messages
510
Real Name
Dr Klaus Schmitt
Quick test of a new, quite capable UV transmitting filter that has recently been introduced to the market, currently sold only via ebay by seller/company "uviroptics" and named "LUV U-2 52mm Camera Filter, 359WB53, 315-395nm".

First I'm using a very deep into UV reflecting Zinnia flower for that test as well as my "work horse" UV filter, the Baader-U filter for comparison. Lens was my CERCO 94mm quartz flourite lens. Light source was an UV enhanced Xenon flash. All shots were done at f8.

UV detail image using Baader-U filter (approx. 320-395nm, peak approx. 350nm):
large.jpg
Subscribe to see EXIF info for this image (if available)


UV detail image using LUV U-2 filter (approx. 315-395nm, peak approx. 359nm):
View attachment 1211194

UV images using on the left Baader-U filter and on the right LUV U-2 filter:
large.jpg
Subscribe to see EXIF info for this image (if available)


Second, outdoor tests using a Gazania rigens flower and sunlight, same lens.

UV detail image using Baader-U filter (approx. 320-395nm, peak approx. 350nm):
large.jpg
Subscribe to see EXIF info for this image (if available)


UV detail image using LUV U-2 filter (approx. 315-395nm, peak approx. 359nm):
large.jpg
Subscribe to see EXIF info for this image (if available)


UV images using on the left Baader-U filter and on the right LUV U-2 filter:
large.jpg
Subscribe to see EXIF info for this image (if available)



All shots have individual white balance set. Compared to using the Baader-U filter, the LUV U-2 needs enhanced red and green and somewhat pushed back blue channels to achieve about identical resulting images when using a quartz fluorite lens; a UV transmitting "normal" lens will need different WB settings in both cases.

Summarizing my findings: The LUV U-2 filter in theory is a bit slower than the Baader-U filter, but only 1/3 EV, which perfectly coincides with its 65% peak, compared to Baader's 80%, that's neglectable at work. In use it is as sharp as the Baader-U filter, considering it is (mechanically very well) built from in total thicker ionic colored absorbing SCHOTT UG11 and S8612 glass filters. I cannot detect any IR leakage at all, as it seems to be having OD4 out of band suppression, which is very good, even better than the Baader filter. Factoring in its attractive price, a very welcomed new filter for reflected UV photography.
 
Joined
Jul 27, 2012
Messages
481
Location
US
That Gazania flower is absolutely stunning Klaus! The purple and white and the color details in the center too. Elegant shot.
 
Joined
Dec 3, 2012
Messages
7,253
Location
Sandpoint, Idaho
Those are beautiful, never anything like these. Really like the purple flower shots.
 
Joined
May 30, 2006
Messages
510
Real Name
Dr Klaus Schmitt
Thanks guys!
 

Latest threads

Links on this page may be to our affiliates. Sales through affiliate links may benefit this site.
Nikon Cafe is a fan site and not associated with Nikon Corporation.
Forum post reactions by Twemoji: https://github.com/twitter/twemoji
Forum GIFs powered by GIPHY: https://giphy.com/
Copyright © Amin Forums, LLC
Top Bottom