Avia or Digital Video Essentials color filter?
Answers: The following links will provide you near the exact replacement color filters for respectively of the popular display optimization discs (... and at significantly less than $19.95 per set):
AVIA FILTERS REPLACEMENT SET
http://www.ovationmultimedia.com/product...
http://store01.prostores.com/servlet/ova...
The cost of a replacement set is $12.00 (US) plus the cost of shipping
DIGITAL VIDEO ESSENTIALS
Color Filters* for Decoder Alignment
http://www.videoessentials.com/extra_fil...
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Digital displays, such as DTVs, HDTVs and video projectors, use the following CIE (x, y) chromaticity coordinates for the R, G, and B suggestion primaries specified in the SMPTE 274M-1998, ANSI/SMPTE 296M-1997 and ITU-R BT.709 standards:
Red primary 0.640 0.330
Green primary 0.300 0.600
Blue primary 0.150 0.060
If you choice to pursue the task of finding the correct color filter produced by companies such as GAM, Rosco, Lee, and others, then you will have need of to match the filter’s CIE colorimetric notes with the tristimulus values down above, if the filter is to work properly. You should also make sure that the cut-off of the spectral response curve for the filter (when published) is as sharp as possible.
GAM Products
http://www.gamonline.com
LEE Filters
http://www.leefilters.com
Rosco Laboratories
http://www.rosco.com
Considering the time and try involved in tracking-down the proper, third-party color filter you may be better served by purchasing the original replacement color filter from the sources I’ve listed above.
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*“Red and Green Filters: In the program partition about setting the Color and Tint controls, VE mentions red and green filter used to judge the characteristic of the NTSC to RGB decoder. Where can I get them? The best source of filter bits and pieces we know about comes from Eastman Kodak (EK) and should be available from stores specializing surrounded by photographic supplies. The blue filter included with Video Essentials is designed to be as close as possible to the EK Wratten 50 filter. For red, any the Wratten 25 or Wratten 29 should work just fine. For green, the Wratten 54 or Wratten 58 should do the trick. The blue filter we package next to Video Essentials come from exposing motion picture print film for a maximum blue. Selecting maximum red or maximum green does work but those two colors are not as drenched as the Wratten filters. Some red get through the green filter and some green gets through the red filter. We are fortunate surrounded by print film’s ability to closely game the Wratten 50 for saturated blue.” ~ Joe Kane Productions
(Note: the gelatin-based Wratten color filter have be replaced by Kodak’s Wratten 2 filters; Wratten filter number 50 is no longer produced and have been superseded by Wratten 2 filter number 47 (tri-color blue.) I’ve included the preceding information for insinuation purposes only - authentic Kodak Wratten filter are fairly expensive, especially when compared to the color filter included with any of the optimization discs listed above.)
Wratten Filter Codes and Uses
http://www.redisonellis.com/wratten.html
KODAK WRATTEN 2 Optical Filters
http://www.kodak.com/US/en/motion/produc...
Sure, you can use theater insubstantial gels. They run more or less 6 bucks for a sheet and you'll have a lifetime supply if you rob care of them.
Also, indubitable Lucas Films titles come with filter to use with their THX setup easter eggs. Sorry, don't remember which ones but I bet you can find out on queue, maybe at Amazon? You could contact THX directly too.
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