Though not printing for 50 years, I have been printing colour seriously and daily since 1976. I have never seen the 10 red variance correction factor on colour negative film. in fact it would be a miricale to have this happen in my opinion.
Originally Posted by Photo Engineer
Working with the cyan filter with either the yellow or the magenta wheel at zero is not a day to day situation with any colour paper I have used. Kodak, Konica, Ilford, Fuji , Agfa. Usually this indicates a bad bulb or bad dichroics but as sparky noted crank up the cyan and magenta and you will indeed get yellow correction.
The tolerences in making colour paper is way beyond the scope of most of us practicioners. I am only grateful for the consistencys of product supplied by the major manufactures of photographic emulsions.
There is a saying in photographic lab culture ** operator error ** . Not untill any and all variables are scoured out will a printer in any major lab worldwide, blame the paper that we use.
In fact there is an operator in our town presently who is suggesting that Fuji Crystal Archive Flex material will not work. He is experiencing a red cast on image area and cannot figure the problem. It has been pointed out that it is a latent image pre flash that is causing the problem by various sources myself included. This operator dismisses this and insists it is fuji's problem. I am quite thankful he does not work with me.*operator error*
The problems that occur are usually one not related to the emulsions themselves and need perservernce to find.