Color space settings in the camera are irrelevant when shooting RAW. But what does matter is that your RAW converter and PhotoShop version are on the same page. You'd be better of converting in Elements and using that software for post. Paul -------------- Original message ---------------------- From: "P. J. Alling" <[EMAIL PROTECTED]> > I assumed that there was a problem with the color space, so I tried > using the Adobe RGB color space that I had good results from couple of > years ago. The *ist-Ds will only allow sRGB or Adobe RGB for recording > purposes, and I have the *ist-Ds set for Adobe RGB, (now I'm not sure > that makes any difference when shooting in RAW at this point). I opened > the file in RSE, modified color balance, enhanced the shadow contrast, > (so I had more or less nice black skys), double checked that everything > looked like I expected and exported a TIFF. It automatically opened in > Photoshop and it looked just like the image exported in ProPhoto color > space... I do understand color space at least a bit. I know that > ProPhoto haa a larger gamet why however does > AdobeRGB->AdobeRGB->AdobeRGB end up losing colors, especially since I > used that conversion method before with predictable results...In fact > why does it give exactly the same results as > AdobeRGB->ProPhoto->AdobeRGB. Based on the results I've seen from other > conversions I've done it shouldn't. > > Brian Walters wrote: > > Every time I think I understand colourspace conversions (or something > > else to do with digital capture), someone on the list shatters my > > illusions! Learning new things is one of the great benefits of PDML. > > > > Thanks for posting that explanation, Godfrey. > > > > > > Cheers > > > > Brian > > > > ++++++++++++++++++++++++++++++++++ > > Brian Walters > > Western Sydney Australia > > http://members.westnet.com.au/brianwal/SL/ > > > > > > > > On Wed, 09 Jul 2008 11:52:04 -0700, "Godfrey DiGiorgi" <[EMAIL PROTECTED]> > > said: > > > >> There's no mystery to it other than that you need to understand > >> colorspaces better. > >> > >> ProPhoto RGB describes a much larger color gamut than Adobe RGB or > >> sRGB. If you have subtle colors in ProPhoto RGB and they disappear > >> when you convert to sRGB or Adobe RGB, they've been clipped as they > >> cannot be represented in the target colorspace. Once clipped, they > >> cannot be recovered by converting back to the larger colorspace ... > >> the data has been lost, you need to go to the original file to > >> retrieve them. You might try different rendering intents ... Relative > >> Colorimetric basically moves all 'out of bound' colors to the limits > >> of a particular colorspace where Perceptual attempts to translate all > >> colors into the target colorspace as best can be arranged. > >> > >> Here's a way to see what's going on: convert a RAW file to a > >> [EMAIL PROTECTED], ProPhoto RGB file and open it in Photoshop. Have the > >> Histogram palette open, full RGB display. Then convert the colors to > >> the Adobe RGB profile with Relative Colorimetic intent ... toggle the > >> action with the "undo" command a couple of times and watch the > >> histograms. You'll see where the clipping is. Do the same with the > >> Perceptual intent. Once you see where the clipping is, go back to the > >> ProPhoto RGB rendering and adjust the color rendering to move values > >> in those areas back into the "safe" zone. Then you can convert to a > >> smaller profile with greater ease. > >> > >> (When you're working with a printer output profile, you can do the > >> same thing using the proofing setup and even turn on gamut warning > >> flags, but I don't recall that Photoshop 7 has these features. I have > >> PS CS2.) > >> > >> Godfrey > >> > >> > >> On Jul 9, 2008, at 11:18 AM, P. J. Alling wrote: > >> > >> > >>> Raw Shooter Essentials, it's much better looking, without any > >>> Photoshop > >>> work before export as a TIKF. I recently started using ProPhoto color > >>> space in my work flow which seems to give better results, if I > >>> remember > >>> to convert the profile in Photoshop before output, so I changed > >>> back to > >>> the Adobe RGB profile and it made no difference. The last set of > >>> fireworks I processed, some time ago looked exactly the same when > >>> imported into Photoshop after conversion. > >>> > >>> http://home.earthlink.net/~morephotos/fireworks/PESO_-- > >>> _fireworks1a.html > >>> > >>> It's really quite annoying. > >>> > >>> David J Brooks wrote: > >>> > >>>> I like the pattern of the blast, very good. > >>>> > >>>> What do you convert with.? > >>>> > >>>> Dave > >>>> > >>>> > > > -- > You get further with a kind word and a gun, than with a kind word alone. > --Al Capone. > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions.
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