The Tiffen 3 x 4" Decamired Blue 3 Cooling 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. About how long will 2 AAA Duracell batteries last?

A: With 2 AAA alkaline batteries, you can get about 2.25 hours of run time on this flashlight at the highest output.

Q: 2. Does this require a locking mechanism in the mount? I’d like to use it on the FX6

A: The ZEISS CP3 lenses incorporate a 3/8" thread support bracket at the bottom of the barrel. This can be tied into a camera support rig to isolate the lens from the camera and prevent any movement in the mount as the focus is racked.

Q: 3. which one is better in terms of quality, this lens or Sony FE C 16-35mm T/3.1 G for vlogging ( i don't like changing lenses)?

A: A zeiss lens is superior to any Sony FE lens

Q: 4. Does this fit the R12 Cart?

A: No. Designed and made for RocknRoller R6G and R6RT Carts.

Q: 5. will this fit a zeiss will this fit zeiss 2267336 binoculer 8 X 300B mc: 1 and 11/16"?

A: The Front Lens Cap for the ZEISS CP.3 lenses is designed specifically for cinema lenses with a front diameter of 95mm. It is not intended for use with a binocular. Please specify the model of the binocular (Victory, Conquest, Terra etc), magnifying power (8x, 10x etc) and diameter of the front objective (25mm, 32mm, 42mm etc).

Q: 6. Is there a power on/ off button?

A: No, the Enhance GX-C1 does not have a power button. Instead it has a dial which is used to control fan speed and light brightness.

Q: 7. Does this case hold the XD versions of these lenses?

A: Yes, This case would also work with Zeiss CP3 XD lens models as well. We also have another choice from Jason cases that supports the XD lenses. Jason Cases Zeiss CP.3 6-Lens Case (Compact) BH #JAZECP36LCPL https://bhpho.to/3EtMijN

Q: 8. can i switch the light off?

A: The Enhance GX-C1 Laptop Cooling Stand (Blue LED), B&H # ENGXC10100BK, does not allow you to turn off the lights completely unless you also turn down the fans all the way down. The control dial controls both the LED brightness and the fan speed.

Q: 9. With the Zeiss CP.2 Super Speeds being discontinued, does Zeiss intend on releasing a CP.3 Super Speed line to take their place?

A: there has been no official statement from Zeiss about a Cp.3 line of super speeds

Q: 10. Will the same case also fit Sigma High Speed PL lenses? Mixed.

A: No, the Sigma T1.5 Cine FF High-Speed Art Primes are shaped completely differently compared to the ZEISS CP.3 Primes. These lenses will not fit into the Innerspace Cases 6-Lens Case for ZEISS CP.3 Primes.