by NoelC » Sun May 01, 2011 10:42 pm
Oh, and I really don't want to be a pain, but this is a clear case where the downsized image excerpt, posted on the main APOD page, has been improperly manipulated with regard to color space. It is not showing as the folks who prepared the image intended.
Specifically, the large, square submitted image,
http://apod.nasa.gov/apod/image/1105/ba ... n_2000.jpg,
is published in the Adobe RGB 1998 color space (i.e., it's tagged with the Adobe RGB 1998 color profile). The downsized excerpt on the main APOD page,
http://apod.nasa.gov/apod/image/1105/ba ... yn_900.jpg,
has had its color profile stripped out, which means that most browsers will interpret it impoperly as sRGB.
In past discussions it has been determined Robert Nemiroff is using an image editing tool (ImageReady) that is so old that perhaps it doesn't understand or maintain the color profile information.
Please note that now that Internet Explorer 9 has been released, and is now sensitive to the color profile in images, this leads to a disparity in the appearance of the small image and the actual submitted image
in every major browser. You can clearly see that difference here:
RJN, may I respectfully suggest moving up to a newer image editor that manages color profiles properly. Even the inexpensive program Photoshop Elements maintains the color profile. I'll be more than happy to help you set it up and understand how to manage color spaces, and we can even take up a collection to help raise the $99.99 if you like.
Thanks.
-Noel
Oh, and I really don't want to be a pain, but this is a clear case where the downsized image excerpt, posted on the main APOD page, has been improperly manipulated with regard to color space. It is not showing as the folks who prepared the image intended.
Specifically, the large, square submitted image, http://apod.nasa.gov/apod/image/1105/barnard163_wiyn_2000.jpg, [b]is published in the Adobe RGB 1998 color space[/b] (i.e., it's tagged with the Adobe RGB 1998 color profile). The downsized excerpt on the main APOD page, http://apod.nasa.gov/apod/image/1105/barnard163_wiyn_900.jpg, [b]has had its color profile stripped out[/b], which means that most browsers will interpret it impoperly as sRGB.
[attachment=1]NoColorProfile.jpg[/attachment]
In past discussions it has been determined Robert Nemiroff is using an image editing tool (ImageReady) that is so old that perhaps it doesn't understand or maintain the color profile information.
Please note that now that Internet Explorer 9 has been released, and is now sensitive to the color profile in images, this leads to a disparity in the appearance of the small image and the actual submitted image [i]in every major browser[/i]. You can clearly see that difference here:
[attachment=0]DifferenceInColor.jpg[/attachment]
RJN, may I respectfully suggest moving up to a newer image editor that manages color profiles properly. Even the inexpensive program Photoshop Elements maintains the color profile. I'll be more than happy to help you set it up and understand how to manage color spaces, and we can even take up a collection to help raise the $99.99 if you like.
Thanks.
-Noel