The Tiffen 4 x 5.65" 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. Would a z5 with attached z14-30 f4 fit inside plus either the Nikon 50mm f1.8 or the Nikon 24-70 f4?

A: Yes, the Think Tank Photo TurnStyle 5V2.0 Sling Camera Bag (Charcoal) can hold all of that, but it will be a tight fit.

Q: 2. Would this fit the Nikon Z50 with NIKKOR Z DX 16-50mm f/3.5-6.3 VR pancake lens attached and NIKKOR Z DX 50-250mm f/4.5-6.3 on the side?

A: Yes. This bag can hold all that gear at once.

Q: 3. Will it fit my z6ii with z 100-400 lens attached and have room for the z 24-120?

A: The Nikon Z6 II Mirrorless Camera with the Nikon NIKKOR Z 100-400mm f/4.5-5.6 VR S Lens attached with the Nikon NIKKOR Z 24-120mm f/4 S Lens (Nikon Z) does fit in the Think Tank Photo TurnStyle 20 Sling Camera Bag V2.0 (Charcoal).

Q: 4. will this bag fit the z5 with attached 24-70 f4 plus the battery charger?

A: Think Tank Photo TurnStyle 5V2.0 Sling Camera Bag will only fit your camera and lens if they are not attached. If you prefer to mantain the lens attached to your camera I will recomend the Think Tank Photo TurnStyle 10 V2.0 Sling Camera Bag. This bag has enough space for the camera lens and other accessories.

Q: 5. Will the Nikon Z7ii with the 24-200 f/4-6.3 lens fit?

A: The Z7II is too tall to fit in the Think Tank Photo TurnStyle 5V2.0 Sling Camera Bag with a lens attached.

Q: 6. Hello with this bag hold a sony a7 iv with 35-150 attached and still have room for a tamron 20-40?

A: The Think Tank Photo TurnStyle 10 V2.0 Sling Camera Bag (Charcoal) is large enough for the a7IV with the Tamron 35-150mm lens attached. And will be tight adding the 20-40mm lens.

Q: 7. Can it be used on either shoulders, to minimize fatigue during longer journeys?

A: Unfortunately no, the Think Tank Photo TurnStyle 5V2.0 Sling Camera Bag is only designed to be worn over the left shoulder.

Q: 8. Is there a warranty?And if there is how long is it?

A: This product has a one year, limited manufacturer's warranty.

Q: 9. Would I be able to fit a Sony SLT-A57, with a Sony 70-300mm f/4.5-5.6 G SSM Lens, and a smaller 18 to 55mm lens into this bag?

A: The Think Tank Photo TurnStyle 5V2.0 Sling Camera Bag (Blue Indigo) seems to be large enough to fit the Sonly SKT-A57 with no lens attached with the Sony 70-300mm f/4.5-5.6 G SSM Lens, and a smaller 18 to 55mm lenses not attached.

Q: 10. Would a Sony RX 10 IV fit?

A: If you take out the center divider it should fit but it will be tight and will probably be bulky regarding the width.