The Tiffen 3x3" Decamired Red 3 Warming Glass Filter- For those who want a sure-fire way of getting accurate color temperature readings, the decamired system is the way to go. Using this formula, you can transpose temperatures from one point to another easily and quickly. This system is also useful when you wish to bring a certain amount of creativity to color photography.

Applications include keeping color temperature constant during the course of the day and producing the effect of different times of day. Available in two series, reddish filters that warm the light and bluish filters that cool the light. Each series contains 4 densities: 1.5, 3, 6, and 12. Filters in the same series can be combined.

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

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.

Used for Temperature Control    Available in Specific Increments    Warming and Cooling Variety

The decamired system has an advantage over the Kelvin system in that the Kelvin scale is not linear

Decamired readings provide more accurate/controllable readings than Kelvin

The difference between the Mired value of the film and the Mired value of the light is the Mired value of the correction filter that correctly tailors the light to the film

Related Questions and Answers

Q: 1. Is the base supposed to be wonky? All 4 feet do not rest on a level surface. Is this on purpose or did I get a lemon?

A: Of course this item should offer stable support. Please contaqct our customer service: B&H Customer Service Team: Call: 800.221.5743 or 212.239.7765 Email: cs@bhphotovideo.com

Q: 2. does it come with the shock mount?

A: No. It comes with all of the components listed on Page 03 of the manual, in the following link. https://static.bhphotovideo.com/lit_files/452850.pdf

Q: 3. Is this the same some that goes on the godox bi sl150 ii?

A: No, this Godox Glass Dome for SZ200Bi is not compatible with the SL150 II.

Q: 4. Can this be used for Leica SL3?

A: The Leica Premium Hybrid Glass Display Protection for Leica SL2 will fit the LCD screen on the Leica SL3 Mirrorless Camera.

Q: 5. can you use this filter with the blue snowball?

A: This stand has a 5/8'' thread and should screw into the bottom of the Snowball.

Q: 6. Can you use it with the Auray broadcast arm?

A: No. The Auray RF-C20 Studio Isolation Filter weighs 8.2 pounds, which is much more weight than the Auray broadcast arms can support. The Auray BA-XE4 Broadcast Arm with Integrated XLR Cable (B&H # AUBAXE4) and the BAE-2X Two-Section Broadcast Arm with External Springs & Integrated XLR Cable (B&H # AUBAE2X) can each support up to 3.5 pounds, while the Auray BAI-2N Two-Section Broadcast Arm with Internal Springs (B&H # AUBAI2N) and the BAI-2X Two-Section Broadcast Arm with Internal Springs and Integrated XLR Cable (B&H # AUBAI2X) can each support up to 5 pounds.

Q: 7. This says it is a two pack. Are there two magnifying glasses of different sizes?

A: Two as advertised. These are a great value, and are a great help for reading focusing rails.

Q: 8. how do you install it?

A: To install the Westcott Glass Dome for FJ400 Flash Head, with one hand wrap the dome around two of the metal tabs located around the flash tube. Then with your other hand use your thumb and pointer finger to push inward on the other two metal tabs and push the glass dome down and around.

Q: 9. Is this applicable to use on an M9?

A: This screen is too big for the M9, you will need a protector that is for a 2.5" screen. Click on the link below to view; https://bhpho.to/2V5Lnif

Q: 10. What are the measurements of the screen protector?

A: The Leica Premium Hybrid Glass Display Protection for Leica CL, C-Lux, D-Lux 7, V-Lux 5 corresponds to the 3" (76.2mm) LCD screen on the compatible cameras.