colourshift

[Fons Baerken]

this image processed in photoshop, on saving as a jpg for web, whether i tick the box rgb or not the image saves with a tremendous colour shift all the clear yellows adopt a strong orange hue,
What to do to avoid this shift?

[HCS]

this image processed in photoshop, on saving as a jpg for web, whether i tick the box rgb or not the image saves with a tremendous colour shift all the clear yellows adopt a strong orange hue,
What to do to avoid this shift?

Did you convert to the colour space before saving? Not just assign colour space?

[Bjørn Rørslett]

The web image has sRGB colour space. However, the reds are clearly blown and hit the 255 ceiling all over the image. The greens are lower and that likely makes the ugly orange cast.

There must have occurred a colour space error somewhere in your processing chain. Perhaps working in a wide gamut space such as ProPhoto and then assigning sRGB instead of converting to it? That really would upset the final colours.

[Fons Baerken]

Thanks

ACR was assigned to prophoto so i changed that for the workingspace also, had assumed etc , maybe updates had reset the workingspace,
anyhow



not completely as wished but its a start, the conversion for webuse spunges up the colour clarity

[Bjørn Rørslett]

It's a world of difference between assigning a colour space and converting to it.

You should set your Photoshop or whatever software you deal with for image processing to warn about profile mismatches when opening a file. If there is a mismatch, select the best suited conversion method. 'Perceptual' often works well unless you have reasons for choosing the colorimetric variants.

While several modern browser are colour space aware, they often have severe trouble managing the wide gamut spaces such as Prophoto. Convert your  image into a smaller and manageable space before posting the image to the web.