The unmounted Tiffen 6" Round 81EF Light Balancing Filter helps to decrease the color temperature by 650K in order to warm the image slightly in order to match the color quality of illumination. When using an 81EF filter, you will be able to attain 3200K balance when the prevailing light source is 3850K. The warming effect of this filter requires a 0.6-stop increase in exposure for normal results.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch.

Warming Light Balancing Filter    Less 650K to Convert 3850 to 3200K    ColorCore Technology

Light balancing filter decreases color temperature and provides a warming effect.

Subtracts 650K in order to attain 3200K color balance from 3850K illumination.

Filter factor of 1.5 requires a 0.6-stop increase in exposure.

Related Questions and Answers

Q: 1. Serves in a nikon d5500 and d7200. Is it for AC110v or AC220v current?

A: It's a multi voltage unit and will work with either one. May need a plug adapter.

Q: 2. How do I mount this light to shoe on the sony camcorder pj670? The included shoe does not connect. (The shoe on the camcorder is recessed and I can't slide the mount in).

A: I bought a handle adaptor. It attaches where you would mount a tripod. The handle comes up and over the top of camcorder, and you would slide this light into the slot. The shoe on top of your camcorder can be used with a flash.

Q: 3. Is it a TTL flash or Manual flash or with both?

A: This monolight kit is manually controlled only.

Q: 4. Is there any option for an optical slave?

A: Yes, the AD100 Pro offers two optical slave modes: one that fires from a flash without a pre-flash option and one that fires from a flash with a pre-flash option.

Q: 5. I keep reading issues about the touchscreen and the boot time - would these drawbacks prevent you from buying this again or does its functionality overcome its flaws?

A: Typically there aren't any issues with this meter.

Q: 6. What is the size of the carrying bag?

A: The carrying case of the Godox AD100pro Pocket Flash is 8.6 x 6.6 x 3.9".

Q: 7. Will it work on an Olympus OM1?

A: Yes, the Godox RING48 Macro Ring LED Light will work on an Olympus OM1.

Q: 8. Does this read color temperature?

A: No. It is a light meter for ambient light and flash.

Q: 9. Will this work TTL on a canon eos1 35mm camera?

A: The Profoto A10 AirTTL-C Studio Light for Canon requires a digital camera in order to use TTL due to software requirements in order to send the information from camera to the flash. For Canon EOS 1 35mm camera I would suggest manual flash like https://www.bhphotovideo.com/c/product/1712781-REG/godox_lux_senior_retro_camera.html

Q: 10. Is the flash trigger included?

A: A flash trigger is not included, being that they are camera-dependent.