Tom, I think that defeats the whole purpose of the question - correctness in Windows is what is needed for Web pages and what Gerald wants to accomplish. Turning off the color management in Windows will be fine for Gerald's screen (however you do that - are you talking about monitor calibration to 1.8 gamma?) but it will be too dark for everyone else in the cyberworld who looks at the images. Gerald *wants* his image to look right in Windows and, especially, in IE and Netscape with it's normal color and gamma settings. Maris ----- Original Message ----- From: "Tom" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, March 04, 2001 9:40 PM Subject: Re: why are gamma 1.5 adjustments necessary for correctness in Windows? | Do you have color management turned on in both Windows and in you editing | software? If you do I suggest you turn it of in Windows and see if that | helps. It took me a long time to figure this out. Windows CMS seems to be | on by default. | | | ----- Original Message ----- | From: "Gerald Cermak" <[EMAIL PROTECTED]> | | > I've been trying to refine my digital editing skills over the last months | or | > so, and while I've made some improvements, I still don't quite understand | a | > few things. | > | > My current concern is why when I save an image converted to sRGB space (in | > Windows), it doesn't look right unless I first change the gamma from 2.2 | to | > 1.5. As I understand things, the default color space on Windows is sRGB | > with a monitor gamma of 2.2. When in my editor, this all works out | > beautifully for nice images using profiles for my monitor, a Chrome 2000 | D65 | > workspace color, etc. I have found I can retain most of the original | Chrome | > working space colors by saving my jpegs to the sRGB IEC61966-2.1 color | > space. But leaving the gamma at 2.2 results in a image in IE5 (or other | > non-color space corrected viewing program) that is way too dark compared | to | > what I edited. Through experimentation, the best match is made by first | > converting to a gamma of 1.5, then saving. I've tried gammas ranging from | > 1.2 to 1.8, and 1.5 is the best match. | > | > I've calibrated my monitor (a Viewsonic PS790) as best as possible at | 6500K | > using on screen test patterns for brightness and contrast, and this seems | to | > give the best viewing of other images on the web. I have the Viewsonic | ICM | > files for my monitor loaded, so I think everything on my system is setup | > properly. | > | > This gamma change problem exists in both PhotoShop 5.0 LE without color | > space profiles, and Picture Windows Pro 3.0 where color space profiles are | > enabled. | > | > Does anyone know why I have to save my images at a gamma of 1.5, when | > Windows is supposed to have a gamma of 2.2? | | | - | This message is from the Pentax-Discuss Mail List. To unsubscribe, | go to http://www.pdml.net and follow the directions. Don't forget to | visit the Pentax Users' Gallery at http://pug.komkon.org . | - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
