canned
Hello everyone,
Does anyone have any advice on how I can evaluate colour test strips by eye?
Example:
I have the magenta test strip in front of me, with values in increments of 15 (5, 20, 35, 50, etc.). With a low filter value, it shows a red cast (= too little magenta); with a high value, a green cast (= too much magenta). How do I find, within these relatively fine gradations, the point with the least red/green cast, i.e. the correct filter value? Which part, which contrast in a negative, is best suited for a test strip? The same applies to determining the yellow filter: a low filter value with a yellow cast (= too little yellow), a high filter value with a blue cast (= too much yellow).
Does anyone know of a reference or sample colour palette online? Or an online colour photography course?
Best regards & thanks for any suggestions,
canned
fotohuisrovo
If colour matching is a problem: use the Kodak Colour Print Viewing Filter Kit. This allows you to quickly and easily determine the correct filter values (+/- 5CC).
If you want everything to look equally good: use a reference chart and/or a grey card. The whole process must be standardised and calibrated using a good colour analyser (e.g. FEM CFL-4012).
For every digital storage medium: use the same batch of RA-4 paper, chemicals, film, etc.
This is the only way to succeed, and make sure you use an analyser. :ph34r:
Unfortunately, this costs €750, and old, second-hand analysers sometimes only produce results that still need correcting, just like with the Kodak filter kit.
Best regards,
Fotohuis RoVo
Robert Vonk
