Originally posted by Hidrieus Has anyone experimented with the parameters to achieve repeatable effects? Is there a database of them?
Somewhere here in this site there is a thread about sharing Pentax jpeg style tweaks to achieve certain film style, I don't remember where that thread is, it's a few years old.
Originally posted by Hidrieus For example if I start from Custom Image Natural in my K5 what parameters should I adjust to achieve a certain effect?
To achieve certain film look requires:
- matching of a tone conversion curve based on various light levels, e.g matching of film level reproduction over the 10 zones system
- matching of color conversion based on various hue points of the color wheel. It can be done using color patches and adjusting each color with HSV (Hue Saturation Value) parameters, RGB curve points for each color patch, or L* ab.
The starting point of the input file (standard or flat) doesn't matter as long as that choice remains consistent after the tone & color conversion settings are established.
It's possible to get close to a film look, but doing so manually is time consuming. There are some scripts that take two images and automatically tweak tone curve and color parameters to two images to match.
That method may not work well if the color style conversion isn't linear continuous (should be Ok to mimic monochromatic films or color films), 3D LUTs are used from large number of hues to match any color style.
---------- Post added 14-01-22 at 21:08 ----------
Originally posted by UncleVanya DXO filmpack does all that and more. For any camera supported.
DXO is great for that. Lots of cameras supported.