138mm filters have no threads, they are designed to drop into a filter adapter ring or a matte box
The Tiffen 138mm CC10M Magenta Filter is a color compensating (or color correction) filter for use when making color balance adjustments. It can be used to alter the color balance of a scene by placing in front of a light source or the lens of your camera. It can also be used to apply color corrections when used in the darkroom with an enlarger or to help pre-visualize color adjustments when viewing prints.
Magenta is the opposite of green and can be used to reduce green tones or casts within a scene or print. This magenta CC10 is more dense than a CC05 filter and less dense than a CC20 filter, and requires a 0.3 stop compensation for normal exposure results.
Tiffen filters are made using ColorCore technology; a process that involves laminating the filter substrate between 2 pieces of optical glass, grinding flat to a tolerance of 1/10,000th of an inch, then mounting to precision metal rings.
Color Compensating Filters
These filters are used to make adjustments to the red, blue or green characteristics of light. Applications include correcting for color balance, light source variations, different reversal film batches, and other color effects. They are available in density variations of Cyan, Magenta, Yellow, as well as Red, Blue, and Green filters. These filters can be combined to achieve more density. Screw-in sizes up to 82mm offer Magenta 30 only. Magenta filters balance the color of excess green cast and produce creative effects. Great for morning tint.Buyers shipping within the 36
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