RENT Tiffen 4x5.65" 80A Tungsten to Daylight Conversion Glass Filter
SKU: R-TF4565080A
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RENT Tiffen 4x5.65" 80A Tungsten to Daylight Conversion Glass Filter Features
80A filters increase color temperature of the light from 3200K to 5500K and correct the use of daylight film with standard household incandescent lamps. They have a filter factor of 2.4 and require 1 1/3 f-stops of additional light.
All light sources, natural or artifical, have characteristics that affect color rendition on film. Most films are engineerd for either daylight or tungsten photofloods which are rated respectively at 5500K degrees (daylight) and 3400K degrees (photofloods) on the Kelvin(K) color temperature scale.
Color correcting filters are designed to 'warm', 'cool' and/or correct for the many variations of lighting you might encounter.
All filters have a 'filter factor' which is a measurement of the light it absorbes. Cameras with internal metering (through the lens) will automaticly adjust the exposure. With external or hand held meters you must allow for this factor.
Note: Modern strobes (flash) are approximately 5500K and will 'overpower' household lighting. With daylight film, no filtration is necessary unless special effects are desired.