Digital colours - gaps in the spectrum

[Leif]

Originally Posted by AlanS

My thanks to everyone who has answered this. Leading me into some interesting reading!

I have, of course, considered monitors - I basically use a good, old-fashioned IIyama take-up-just-about-all-of-the-table monitor which had a good reputation when I first bought it and still appears to be correctly set up (plus various monitors at work). I also have looked at most of the photos on a Sony Vaio laptop - so two different technologies showing the same problems with specific colours - which HAVE to be related back to the images as stored by the cameras.

The thought that this could be related to compression is interesting - I have always saved as high-quality jpegs (sometimes tif if available, which it is not on the new Olympus) but I have ignored the RAW format possibility. I shall look into this and see if it makes any diference. Apparently no Adobe RGB/sRGB choice.

Alan

Use RAW and you can adjust the settings back home. I recommend using RAW with neutral settings though that might not be to your taste. JPG is 8 bit, RAW is 16 bit (well, usually 12 actually), so JPG is limiting.

You could select Adobe RGB though few LCD monitors can display the Adobe RGB gamut, apart from quite expensive ones. Basically you get the central area within the full gamut. If you Google you should find a nice picture showing the colour space.

As mentioned it helps to calibrate your monitor though LCDs seems quite good compared to the old CRTs.

[glsammy]

Originally Posted by AlanS

My thanks to everyone who has answered this. Leading me into some interesting reading!

I have, of course, considered monitors - I basically use a good, old-fashioned IIyama take-up-just-about-all-of-the-table monitor which had a good reputation when I first bought it and still appears to be correctly set up (plus various monitors at work). I also have looked at most of the photos on a Sony Vaio laptop - so two different technologies showing the same problems with specific colours - which HAVE to be related back to the images as stored by the cameras.

The thought that this could be related to compression is interesting - I have always saved as high-quality jpegs (sometimes tif if available, which it is not on the new Olympus) but I have ignored the RAW format possibility. I shall look into this and see if it makes any diference. Apparently no Adobe RGB/sRGB choice.

Alan

I've been thinking more about this and looking back at some older images, and then it all came back! I used to have a Canon S2 IS, and that used to get purple and pinks wrong, and often by quite a bit.