SKU: 78751803493

Tiffen 3x3" Deca Mired Set of 4 Blue Color Conversion Glass Filters

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Description

Tiffen 3x3" Deca Mired Set of 4 Blue Color Conversion Glass FiltersDefinition Decamired filters are designed to more easily handle unusual color temperature variations than the previously mentioned filters. Available in increments of both a red and a blue series, Decamired filters can be readily combined to create almost any required correction. In measuring the color temperature of the light source, and comparing it to that for which the film was designed, we can predict the required filtration fairly well. A filter

Definition

Decamired filters are designed to more easily handle unusual color temperature variations than the previously mentioned filters. Available in increments of both a red and a blue series, Decamired filters can be readily combined to create almost any required correction. In measuring the color temperature of the light source, and comparing it to that for which the film was designed, we can predict the required filtration fairly well.

A filter that produces a color temperature change of 100 deg. K at 3400 deg. K will produce a change of 1000 deg. K at 10,000 deg. K. This is because the filter relates to a visual scale of color. It will always produce the same visible difference. A color change of 100 deg. K at the higher temperature would hardly be noticed.

Example

To allow simple calculation of such differences, we convert the color temperature into its reciprocal, that is, to divide it into "1." Then, since this is usually a number with six or more decimal places, we multiple it by 106, or one million, for convenience. This is then termed the "mired value," for micro reciprocal degrees. It identified the specific change introduced by the filter in a way that is unrelated to the actual temperature range involved.

To see this more clearly, let's look at the following changes in color temperature from both the degree and mired differences. Numbers are degrees Kelvin, those in parentheses are mireds:

  • 9100 (110) to 5900 (170) = difference of 3200 (60)
  • 4350 (230) to 3450 (290) = difference of 900 (60)
  • 4000 (250) to 3200 (310) = difference of 800 (60)

    From this, you can see that, although the degree differential varies as the range changes, the actual filtration difference for these examples, in mireds, is the same.

    Calculations

    To use this concept, subtract the mired value of the light source from that of the film. If the answer is positive, you need a reddish filter; if negative, use a bluish filter. Mired-coordinated filters are termed as decamireds. Mired value divided by ten yields decamireds. The 60 mired shifts, above, would be produced by an R6 filter, where the higher values were that of the lighting. Sets of such filters generally come in values of 1.5, 3, 6, and 12 decamireds in both B (bluish) and R (reddish) colors. These numbers are additive; that is, a pair of R3's produces an R6. An R6 plus a B6 cancel each other out to produce a neutral gray.

In the Box
Tiffen 3x3" Deca Mired Set of 4 Blue Color Conversion Glass Filters
  • 4 Glass Filters
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SKU: 78751803493

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Anum Jawed
Grantham, US
★★★★★ 5
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Size: X-Large, Color: White
Excellent fabric, style and true to size👍👍👍my husband loved it👍👍highly recommended👍👍
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Reviewed in the United States on March 21, 2026
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Omaha, US
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Size: XX-Large, Color: Black
This kurta arrived on time, in a clean and air sealed wrap. The material is soft as described, the design matches, and size matches what I was looking for. This was very comfortable to wear and I’ll be purchasing more from this brand of different colors. Great buy.
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Reviewed in the United States on October 11, 2025
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Tammy
West Palm Beach, US
★★★★★ 5
Really nice sweater gift
I bought this for my husband. It fit him very well. I went up a size for a more comfortable fit for him. This sweater is well made and the quality is great.
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Reviewed in the United States on April 23, 2026
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Frank F.
Boise, US
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The quality is very good looks great on very happy with the style.
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James
Port Orchard, US
★★★★★ 4
Thin, but dont let that stop you from buying.
Soft, looks nice, and im a fan in general. The things i do want to address is that its pretty thin fabric, and that even when i ordered the smallest size it was just a tad to big all around. Decent enough for the money tho.
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Reviewed in the United States on November 5, 2025

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