The 80 series of filters are blue. They are used to balance daylight film under artificial, tungsten or standard (household) incandescent lighting.
This filter measures 85 x 85mm and fits the Cokin P series holder.
Filter factor 2 (+1 stop)
80 Series Color Conversion Chart
80A increases color temperature from 3200-5500 degrees Kelvin (commonly used with 3200K lamps)
80B increases color temperature from 3400-5500 degrees Kelvin (commonly used with photoflood lamps)
80C increases color temperature from 3800-5500 degrees Kelvin (commonly used with flashbulbs)
80D increases color temperature from 4100-5500 degrees Kelvin (commonly used to remove extreme orange or red)
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Pros
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Best Uses
Comments about Cokin P021 80B Color Conversion Resin Filter:
And this filter adds to my collection. I am a Midwestern prairie art photographer. Looking for a way to add to my winter repertoire (it's very brown around here in the winter), I cooled off some of the brown dead winter with this filter.
I am still learning exactly how to use this, but the results so far are promising. It is great with our big sky country and with water; not so good with snow. Blue snow just does not work for me; it may for others.
I prefer this softer blue to the 80A which I also own. I have never used either to cool indoor lighting but intend to mess with this too.
Some of my strongest work has been with stacked filters, always with a GND filter in front to ease the contrast which is often extreme in prairie photography.
Durability is an issue with all Cokin filters. Be careful; it is very easy to snap off a corner.
All in all, this is a solid addition to my filter set.
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