Three Green Stemmed Wine Glasses

[Manfred M]

Three wine glasses that have been lined up. The front one is empty, the middle one is half filled with water and the back one is filled with water. A few drops of green and blue food colouring and I get this shot.

The glasses are back lit and I separately lit the table that they were sitting on. The two images were then blended in post.

The waves in the glass are due to imperfections from the glass manufacturing process.

This is one image where I notice a significant difference between the sRGB and AdobeRGB screens. The gamut of 100% sRGB screens does not show off the greens and blues nearly as well at the 100% Adobe RGB ones. On the sRGB screens the greens and cyans are quite dull on the Adobe RGB screen, the greens and cyans are very deep and vibrant.

[billtils]

I like this one a lot Manfred - nice concept and implmentation.

Would it be possible to post images to demonstrate the sRGB/Adobe differences?

Confession time - I am very sceptical about the significance of colour space as I don't beleve that it is possible to look at an image in isolation and identify it as sRGB rather than Adobe (or anything else) - which is very different from comparing 2 or more and selecting one as "better" or "preferred"...

[Round Tuit]

Three wine glasses that have been lined up. The front one is empty, the middle one is half filled with water and the back one is filled with water. A few drops of green and blue food colouring and I get this shot.

The glasses are back lit and I separately lit the table that they were sitting on. The two images were then blended in post.

The waves in the glass are due to imperfections from the glass manufacturing process.

This is one image where I notice a significant difference between the sRGB and AdobeRGB screens. The gamut of 100% sRGB screens does not show off the greens and blues nearly as well at the 100% Adobe RGB ones. On the sRGB screens the greens and cyans are quite dull on the Adobe RGB screen, the greens and cyans are very deep and vibrant.

Hi Manfred,

This is another one of your well crafted pictures. I would be interested in looking at the Adobe 98 version. The greens and cyans would look very different from the sRGB but the blues should look identical as both spaces use the same blue primary.

[Manfred M]

As Andre has noted, the differences are most noticeable in the greens and cyans with only some subtle differences in the blues. Both sRGB and Adobe RGB do have the same blue point, but in the colour world pure colours are the exception, not the rule so some of the blues are moving past that point and appear to lie in an area outside of the sRGB colour space but in the Adobe RGB colour space in the direction of the cyans and greens.

I have uploaded this image as an Adobe RBG one and I can definitely see the deeper greens and cyans here as well as some minor and subtle differences in some of the blues.

If I open one image in Lightbox and toggle between these two images I can definitely pick up some colour difference in Firefox; neither Chrome nor Edge seem to show any real difference.







On my old not even sRGB compliant Dell screen the colours are muddy. On my 99% Adobe RGB compliant BenQ screen there are some difference, but it is obvious that the missing 1% is the cyans / greens. On my new Huion Graphic Tablet and on my Lenovo Laptop (both with 100% Adobe RGB compliant screens, the greens in the liquid and the feet of the glasses are more of a vivid emerald green and the stem of the glass is a deep and saturated cyan.

Unfortunately, the screens that you use as well as how well the web browser that you use (I tried Firefox, Chrome and Microsoft Edge) are all going to make some difference in what you see. If this glass looks muddy, your browser is not handling AdobeRGB properly and is using the sRGB colour values.

When I look at the original images on Flickr, it seems to handle the colour space conversion properly, but I don't know what the CiC website does.

[Manfred M]

I like this one a lot Manfred - nice concept and implmentation.

Would it be possible to post images to demonstrate the sRGB/Adobe differences?

Confession time - I am very sceptical about the significance of colour space as I don't beleve that it is possible to look at an image in isolation and identify it as sRGB rather than Adobe (or anything else) - which is very different from comparing 2 or more and selecting one as "better" or "preferred"...

I think the answer to your question is "it depends".

I usually work in ProPhoto RGB, which my display cannot handle, but my printer can, to some extent. When converting from either ProPhoto or Adobe RGB to prepare an image for posting, I will often notice how much less vibrant the colours have become in the conversion process, so I pick it up then.

I also have the objects I have photographed sitting close to my computer (I shoot tethered when I do studio work) so I can pick up loss of colour when I see what comes across to the computer from the camera.

As the viewer who only sees posted images with no idea of what the original looks like, I would agree that you wouldn't be able to tell, On the other hand, if I print on a good baryta paper and did one print using ProPhoto RGB and another as sRGB and looked at it under a full spectrum light source, the difference between the two prints would definitely be noticeable.