GRD II Color Calibration Taste for Silkypix

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GRD II Color Calibration Taste for Silkypix

Postby Detail Man » Sat Mar 06, 2010 4:30 am

For those Ricoh GRD II owners out there who use Silkpix for post-processing - I noticed that John Nevill (of Silkypix UK) has taken the time to adjust the Silkypix "Fine Color Controller" settings in order to better calibrate the Ricoh GRD II color output integrity (as measured by his own color-accuracy testing).

Starting at the web-page:
http://www.eos-images.com/silkypix-reso ... alibration

there exists a link (with color-test diagrams showing the "before" and "after" results) to:
http://www.eos-images.com/silkypix-reso ... alibration

which has a link to download the Silkypix "Taste" to accomplish such a color calibration at:
http://www.eos-images.com/download-manager.php?id=17

:P
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Re: GRD II Color Calibration Taste for Silkypix

Postby CHICHORNIO » Sun Mar 07, 2010 5:11 am

I´ve used this setting by "Silkypix Guru" Nevill but it didn´t worked for me al least. The develped image look too greenish for my taste (and for my printer too). I think for web sharing it´s ok, but there is an issue with the WB that I don´t quite understand very well. Having my monitor hardware calibrated, it´s tells what I explained before.
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Re: GRD II Color Calibration Taste for Silkypix

Postby Detail Man » Sun Mar 07, 2010 6:05 am

Interesting. I may not be saying anything here that you do not already understand to be the case (so please pardon me if I seem to state what may be already evident).

One point that Nevill makes is that camera to camera )color-resolving) variations may be a factor.

I don't think that Nevill was aiming for a "plug-in" solution or "taste" (in the general sense) - only for a "starting point" for adjustments using the "Fine Color Controller" in Silkypix - wrapped into a preset that ISL Software refers to as a "Taste".

Even people who say that they prefer "color accuracy, etc." probably will adjust an image to their own "memory colors" (as our memory is all that we have as a reference point). I, myself often like to shift things toward the "Blue-ish" side - but sometimes reverse that sentiment and want a warmer "Red-ish" hue to enhance/simulate the sun's more direct light at dusk/dawn.

All in all, it appears that some shots (particularly from some cameras) seem to have (to my eyes) too much Green relative to Blue and Red. The Blue and Green photo-sensors (of which there are 2 Green photo-sensors for every Red and Blue photo-sensor on the optical surface of image-sensors) have a spectral response that have a (spectral) shape that is relatively well-behaved. The Red photo-sensors (on the other hand) have a spectral response that is the ugliest and most spotty and discontinuous thing that I have ever seen!

Postscript: I went looking for the spectral response graphs that I found (in the Red photo-sensor response) such a horrifying spectral-response - but cannot find it via "Google Images". But I did find this web-page (which depicts a Red spectral-response that is more pleasing to the eye) ... :P
http://www.maxmax.com/camera_technical.htm

It's pretty amazing that technology manages to integrate and de-mosaic these disparate photo-sensor inputs into "pixels" in the first place. In the end (where visual perception is concerned, similar to the case of aural perception), processing is more "smoke and mirrors" than an (objective) "reality", indeed ... :P
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