The Tiffen 138mm 81B Light Balancing Filter helps to decrease the color temperature by 300K in order to warm the image slightly in order to match the color quality of illumination. When using an 81B filter, you will be able to attain 3200K balance when the prevailing light source is 3500K. 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 300K to Convert 3500 to 3200K    ColorCore Technology

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

Subtracts 300K in order to attain 3200K color balance from 3500K illumination.

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

Related Questions and Answers

Q: 1. does the a10 compatible with sony a1 , a9ii and a7r4?

A: Yes the Profoto A10 for Sony works with the Sony A1, A9 II and the A7R IV.

Q: 2. Can I use this light with the Canon 60D camera?

A: No it will not: Compatibility All 3D Sony Handycam Camcorders All HD Sony Handycam Camcorders

Q: 3. Will this work with Sony a6590?

A: Unfortunately we are unable to recognize the model provided to answer your question.

Q: 4. Are either the Canon or Nikon versions compatible with the Leica M10 or the Hasselblad X2D?

A: No, all units will have to be used in manual mode.

Q: 5. Is there an adaptor that ensures that this product can attach to the hotshoe of my Sony FDR-AX100? If so which is it?

A: Sorry, no, this product will not work for it does not have the necessary Multi Terminal foot.Please see attached Sony HVL-LEIR1. This has the necessary Multi Terminal foot.If you wish a 3rd party light, you will need the Vello CB-510 Dual Shoe Bracket to hold a conventional ISO cold shoe. You attach the bracket to the camera's tripod shoe. There is a screw hole in the brackets attachment knob so that you can still mount it to a tripod.

Q: 6. Can the SWIT 98WH battery works well with Rotolight AEOS without compromising any of the functionalities?

A: Yes it will

Q: 7. Is the A10 weather sealed, at all, or suitable for use in rainy conditions?

A: No, the Profoto A10 AirTTL-N Studio Light is not weather sealed.

Q: 8. Does this light level adjustable on this unit?

A: yes the light level is adjustiable with the rotary dial---also i would suggest getting the sony NP-QM91D battery it will last 5-6 hours and can be charged in a sony BC-VM10 charger.

Q: 9. is this compatible with canon st-e3-rt remote?

A: No. The unit runs of its own canon protocol system.

Q: 10. Is there a way to permanently turn off the warning sound?

A: Yes you can turn off the so sound on the Profoto A10. Page 32-33 in the manual. https://bhpho.to/3xeQAHp