Pot Bromide v. Pot Ferri ratio affect on Sepia coloring
Can any of the more chemically inclined folks on here help me understand how varying the ratio of Pot bromide and Pot Ferri will affect the darkness/lightness/coolness/warmness/browness/yellowness of sulfer-based sepia toner?
For example, will a 1 part pot bromide to 1 part pot ferri ratio yield more yellow or darker brown than say, 1 part pot bromide to 2 parts pot ferri?
I am intentionally excluding all other variables such as bleach dilution and time, paper type. I know those variables effect color as well but I would like info on just this variable right now.
That said, I would also be interested to know how the amount of sodium sulfide used in the solution, affects coloring.
Appreciate any info!