On Thursday 18 October 2007 13:41:00 Mark wrote: > Hello Bob, > > > A fundamental assumption here is that camera operation is repeatable > > and not very sensitive to the environment. Typical consumer cameras > > are not very repeatable and are very sensitive to the environment > > because they always try to adjust for the best looking high-contrast > > image. > > ... > > > Scientific cameras, or professional cameras with an entirely manual > > mode, are likely much more repeatable, at the expense of far more work > > on the part of the user to get a good shot. > > since you mentioned it.... I have a industrial camera I'm profiling. > The camera has an auto shutter mode, that in most cases does really > enhance the image. > > Into what category would an auto shutter (no additional manipulation) > fall: > a) breaks all profiling efforts > b) can be used together with profiling
Auto exposure functionality as long as it only adjusts exposure is not an issue for using camera profiles. The main issue is cameras that do auto white balance. As Bob pointed out these can change the white balance of photos taken in exactly the same lighting conditions simply because some of the content of the photos is different. In addition some comsumer grade cameras also adjust image "contrast" for each image which also breaks any profiles created for the device. The difficult part for users of consumer grade cameras is that the automaic featuers can not be disabled which makes using profiles problematic at best. In other words to use profiles with your camera you need a camera the YOU control and you need to take control of the camera. With current cameras you will get your best results using RAW images since this by passes any in camera processing. > > I've asked myself this question some time ago, but I really can't say > yet... > > Mark > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > _______________________________________________ > Lcms-user mailing list > Lcms-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/lcms-user ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Lcms-user mailing list Lcms-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lcms-user
