CTO Filter

[lunaticitizen]

I bought this color filter from B&H because I wanted to bring down the temperature of my Nissin i60A flash to 2900K for our Christmas picture.
https://www.bhphotovideo.com/c/produ..._RoscoSun.html

However, I just found out that my i60A's color temperature is 6850K.


And when I applied the filter, it only brought down the color temperature to 3400K.


Should I have applied another piece of filter on the flash head? Ideally it should be 2700K.

[revi]

Unless you have other relevant light sources in the picture or use camera jpegs,
is there any particular reason to worry about the exact colour temperature?
Your flash may "drown" any ambient lamps.

If you really need to get that temp down to 2700K, perhaps add another 1/4 CTO?
If that 2700K comes from the ambient bulbs, I'm not sure how reliable that value is.
(for starters, LED light is not black body radiation)

[lunaticitizen]

Unless you have other relevant light sources in the picture or use camera jpegs,
is there any particular reason to worry about the exact colour temperature?
Your flash may "drown" any ambient lamps.

If you really need to get that temp down to 2700K, perhaps add another 1/4 CTO?
If that 2700K comes from the ambient bulbs, I'm not sure how reliable that value is.
(for starters, LED light is not black body radiation)

Sorry, not enough information from my part.

Yes I did have other relevant light sources that I included such as my floor lamp, table lamp, and the LED lights of the Christmas tree. I purposely chose high-CRI LED bulbs for the lamps and they're 2700K according to their spec sheet . I just looked up "black-body radiation" on Wikipedia! Interesting.

My flash was, I guess, not the main light; it meant to illuminate our faces, only.

When we took the picture, I had the feeling that the flash light on our faces was too white, hence my little test above.

Btw when I took the picture, I fixed the WB on the camera to 2700K. Not sure if that was the right way.