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Rick1779
Joined: 17 May 2013
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 Posted: Wed Oct 22, 2014 11:04 pm Post subject: CC-4 Dark Blue filter |
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Rick1779 wrote:
It was on the Jupiter-12 and din't find any information about it.
It looks very darker than any other blue filter I've ever seen and I'm wondering what is the purpose of such a filter
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philslizzy
Joined: 07 Aug 2012
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Location: Cheshire, England
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| Posted: Wed Oct 22, 2014 11:16 pm Post subject: |
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philslizzy wrote:
CC would imply it is a colour correction filter, perhaps 1 is the lightest. Maybe to use daylight film under 2800k or lower tungsten light. An educated guess.
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Rick1779
Joined: 17 May 2013
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| Posted: Wed Oct 22, 2014 11:32 pm Post subject: |
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Rick1779 wrote:
If it's cyrillic should be SS-4 filter, not so sure though
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philslizzy
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| Posted: Wed Oct 22, 2014 11:55 pm Post subject: |
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philslizzy wrote:
I don't know about SS but is still seems like a colour correction filter. look at this cokin page. http://www.cokin.co.uk/pages/colour2.htm
The 80A filter is to correct 3200k photofloods to balance with daylight film. Kodak did make one which balanced 2800k - the redder domestic light bulbs, the filter would would be a deeper blue than the 80A. The Russians are unlikely to have gone with the Kodak naming conventions. So what I said before, I still believe could be the right answer.
To test it, set your camera color balance to 'daylight' then take a shot inside under tungsten light with the filter. If the colours appear natural - then that's what it is.
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philslizzy
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| Posted: Wed Oct 22, 2014 11:58 pm Post subject: |
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philslizzy wrote:
Of course this filter can be used to enhance freckles and dark skin - if the model would be happy with that.
Black & white film only of course. It seems that filters have little effect on digital cameras working in mono.
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Rick1779
Joined: 17 May 2013
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| Posted: Thu Oct 23, 2014 8:08 am Post subject: |
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Rick1779 wrote:
Here they are some shot
with the filter on
same shot converterd to B&W
same scene, different shot without filter
converted to B&W
same shot, B&W converted and with the default silkypix blue filter
as far as I can see the tone is quite different from the default silkypix blue filter
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Rick1779
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| Posted: Thu Oct 23, 2014 8:11 am Post subject: |
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Rick1779 wrote:
and here are a couple of shot of the filter
when the filter is screwed on I can't see the aperture settings on the J-12 
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Jvg
Joined: 07 Nov 2012
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Location: New York City
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| Posted: Fri Oct 24, 2014 2:02 pm Post subject: |
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Jvg wrote:
I think CC stands for "синий синий", which translates as double deep blue, equivalent to 80B (2 80As). And number four stand for filter factor. I might be wrong though |
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philslizzy
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| Posted: Fri Oct 24, 2014 10:20 pm Post subject: |
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philslizzy wrote:
| Jvg wrote: |
| I think CC stands for "синий синий", which translates as double deep blue, equivalent to 80B (2 80As). And number four stand for filter factor. I might be wrong though |
This is what I thought, but didnt know it was 80B, just deeper than 80A.
Have you tried as I suggested? Set camera to daylight, then use it indoors under normal incandescent bulb lighting.
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Jvg
Joined: 07 Nov 2012
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| Posted: Mon Oct 27, 2014 1:59 pm Post subject: |
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Jvg wrote:
| philslizzy wrote: |
This is what I thought, but didnt know it was 80B, just deeper than 80A.
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My understanding of things were: two 80As stacked together would give the same result as a single 80B.  No?? |
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philslizzy
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| Posted: Mon Oct 27, 2014 3:02 pm Post subject: |
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philslizzy wrote:
Possibly, it will have more blue to compensate for the redder light of a domestic house bulb.
Rick1779, have you tried it as a colour conversion filter as per my suggestion?
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Rick1779
Joined: 17 May 2013
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| Posted: Mon Oct 27, 2014 3:08 pm Post subject: |
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Rick1779 wrote:
yes, is all blue, no matter the WB settings
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philslizzy
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| Posted: Mon Oct 27, 2014 5:34 pm Post subject: |
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philslizzy wrote:
I conclude that it is a mysterious blue filter. Possibly designed for specialist industrial use.
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Rick1779
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| Posted: Mon Oct 27, 2014 5:38 pm Post subject: |
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Rick1779 wrote:
when I'll have some time I'll take some tests with different wb settings 
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