The Tiffen 95mm Coarse Thread 81A Light Balancing Filter helps to decrease the color temperature by 200K in order to warm the image slightly in order to match the color quality of illumination. When using an 81A filter, you will be able to attain 3200K balance when the prevailing light source is 3400K. The warming effect of this filter requires a 0.3-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, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.

Warming Light Balancing Filter    Less 200K to Convert 3400 to 3200K    ColorCore Technology

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

Subtracts 200K in order to attain 3200K color balance from 3400K illumination.

Filter factor of 1.3 requires a 0.3-stop increase in exposure.

Related Questions and Answers

Q: 1. What could be the angle of coverage? I am trying to figure out if it would have enough spread with a 48" softbox to cover dancer group portraits (maybe 6 front row, 6 back row). Any suggestion appreciated.

A: You would get better spread using a umbrella than a softbox. Impact makes a good 60" for shooting groups https://bhpho.to/2PxLRtr.

Q: 2. Are these AEOS v2 lights or the v1?

A: These are the most current version of the AEOS fixtures.

Q: 3. Does it works with sony a7iii or what aditional accesory I need for it?

A: You would need a transmitter. https://bhpho.to/2KeuT3t

Q: 4. What is the Guide Number of this flash?

A: The Godox AD100pro Pocket Flash (Black) is not rated in Guide numbers but in watts. Most lights more than 65 watts is rated that way. Note, speedlights most are 65 watts or less.

Q: 5. Can the godox be used with a pocket wizard?

A: The Godox AD100pro Pocket Flash will not work with Pocket Wizards remote since the AD100 does not have a PC sync port. However you can use Godox XPro TTL Wireless Flash Trigger for triggering the flash.

Q: 6. Where is the flash unit made?

A: According to our records, this flash is manufactured in Thailand. Please note that this is subject to change at any time.

Q: 7. 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: 8. How is this compatible with compact cameras like the G5X if they don't have a hot shoe?

A: Our website is incorrect as it doesn't work with the G5X. These are the supported models as per Profoto themselves. Supported camera models 1D X Mark III* 1D X Mark II 1D X 1DS Mark III EOS-R5** EOS-R*** 5D Mark IV 5D Mark III 5D Mark II 5DS 5DS R 6D Mark II 6D 7D Mark II 7D 80D 77D 800D 700D 200D 1300D PS G3 PS G1X Mark III 1100D 60D 70D * TTL in mirrorless does not work properly when focusing 1m ** Auto AF assist not supported, No support for 2nd curtain sync, TTL in mirrorless does not work properly when focusing 1m *** Auto AF assist not supported, No support for 2nd curtain sync, Limited to 3fps

Q: 9. In the highlights it states, "TTL with additional equipment". Is this referring to the remote trigger?

A: Yes they are referring to a transmitter. X1, X2 or XPro would be suitable.

Q: 10. Can I use this without a transmitter, and use a cable instead?

A: You can use the Impact Sync Cord Male Mini (3.5mm) to Male PC (16'), BH # IMMMPCM16 connected to the right side of the AD100 Pro: https://bhpho.to/2XjJpvd