Here's a problem for the PDML knowledge base to help me with, if they will. I've just noticed that my pictures online that have exif data lack tags for colour space, or tag it as "uncalibrated".
Lately I've shot mostly AdobeRGB, and it occurred to me that I should have converted that to sRGB for the web. I've used Picasa because I've deemed it adequate for web uploading, as 8bit editing was OK for the purpose and I didn't need anything more complex. But it seems that Picasa isn't colour space aware. When you export a RAW image file it creates a jpeg without ever asking for colour space preferences. No matter, I thought. That must mean it reverts everything to sRGB, but apparently not. It may just leave it uncalibrated. My question is: does it matter? Is colour space discrimination a fundamental characteristic of the image file, with the exif tag being just a nicety to give us a peephole view of the image properties? Or is the tag itself the switch that colour space aware browsers use to set display parameters for an image? Lastly, is an image that lacks metadata displayed by default as sRGB? You can see what I mean at <http://www.flickr.com/photos/[EMAIL PROTECTED]/> where there are images without metadata, and images with exif that indicating an uncalibrated colour space. Regards, Anthony Farr -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
