Chris writes: >> However based on my test BestRGB looks to be the best choice for my 1Ds files. But I am reluctant taking it up as my standard workingspace since its very 'non standard' and I fear issues when I deliver files. I could remap to ECI-RGB but I am probably loosing info due rounding errors in the calculation... <<
Chris, there seems to be a few different issues and concerns here. I am not really up with all the RAW workflow options, but I presume that you are doing raw conversions from camera data and or in-converter edits as well - into a standard file format and ICC colour space. This "rendered" file is then used as the master image for further work, such as reductions to a desired print size and output colour mode. Is this correct? You are not saving the RAW converter settings for each RAW file and using the RAW converter and RAW image as the master file to produce further required images for various purposes? You mention both Adobe CR and the proprietary RAW converter for you camera. I presume that the later will give you the option of choosing any RGB profile or perhaps only working space to directly convert into. It is good to try different spaces, but I would presume that not every image would be pushing the limits where the wider spaces have their trade off advantage. I presume that for important images you also try both raw converters to see if there is an artistic variation you prefer due to the different interpretations of the same raw data between these two converters. You should not be concerned with the rest of the world when it comes to your working space choice - this is an internal decision for you and you alone to make. You should be very concerned with the choice of space that you use when handing off ICC tagged RGB files to other parties though. And converting from capture space to output space is a tricky subject. It is good to be concerned with performing needless conversions on your master files, but I would not worry too much about one or two extra conversions in a dupe that is being handed off for one off use at a certain size and colour mode. There are pros/cons with all RGB working spaces. If you choose a large enough container for your raw data, but never actually shoot images which benefit from this large container then what is the point? If you do have true wider gamut hues but your output is a CMYK press then the larger gamut can introduce problems due to the disparity between the source and destination gamut. Things are even worse for RGBworking space conversions! As one does not have a gamut compression ability as in a perceptual render as in a CMYK conversion - a relative colorimetric conversion is often performed between one RGB working space to another (usually 'simple' matrix based profiles). If you have out of gamut tones/hues for the destination profile, they will be clipped when you convert from the larger RGB to the smaller RGB space (which may or may not be a bad thing). This is also true when handing off RGB which is your concern. You don't wish to distribute a non-standard RGB file, even though having it tagged with an ICC profile labels the data...it is good insurance to hand off either ColorMatch RGB/sRGB or Adobe RGB and have it ICC tagged and stated in folders or file names etc in an attempt to notify those users who ignore ICC profiles who may use your images. One advantage of doing mode conversions in Photoshop, is that one can introduce a "dither" into the conversion which in some cases can make tonal transitions better than a file which has had a "clean" conversion. A good link on RGB editing spaces can be found here: http://www.brucelindbloom.com/WorkingSpaceInfo.html http://www.brucelindbloom.com/ Stephen Marsh. =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
