Hi folks, hope you are all having a swell winter.
Here is my confusing question. Took a photo of a framed picture I have of one of my waterdrops. It's in a white frame as you will see. The problem is this, the actual picture of the waterdrop is purple, yet when I am viewing it on my lcd, it is blue. I have even used the flash and it is still blue. I will attach that picture as well. I used my d 40 to take a picture of my d90"s lcd so you can see what I'm talking about. I used light from a window and my settings on the d90 were manual 1/100 f 4.5 iso 640. Just wondering why the blue color..Any answers will be greatly appreciated...oh, and it does also show the picture in blue on the lcd of the d40 as well. It's when I download it to photoshop do I see the color is the actual color of purple....hmmmmmmm
Attachment#1 (jpg file)
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#1. "RE: question about color" | In response to Reply # 0
#3. "RE: question about color" | In response to Reply # 0
This can possibly be a color management/capability issue.
Some have suggested the camera display is not color managed or very broad in spectral hue. Purple seems particularly problematic with digital imaging, not to mention as a color it really doesn’t exist and as such is perceptual dependent.
For example viewing this post on my iPad II both the camera LCD image and your capture look equally blue. But when viewed on my calibrated wider gamut Dell U2410 monitor the capture looks purple.
And I believe that is one of the cornerstones of color management, handling out of gamut colors.
As Sheri suggested, try this over in the White Balance and Color forum where Hal will most likely have a better idea what is going on.
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#6. "RE: question about color" | In response to Reply # 0
I have read here and on other sites that purple is one of the colors that DSLRs tend to have problems correctly reproducing. I don't recall why or how to fix it. However, the search function should get you the previous threads.
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#7. "RE: question about color" | In response to Reply # 6Fri 15-Feb-13 11:36 AM
>I have read here and on other sites that purple is one of the
>colors that DSLRs tend to have problems correctly reproducing.
While I know about the issue you mention, this is a bit of a twist on it.
The actual shot taken shows the purple on some monitors and blue on others. It seems to be more of a color management/gamut range issue. For example as I already mentioned, I originally looked at this thread on my iPad II and the two shots looked almost equally blue (iPad II showed a trace of purple but not enough to say "YEAH, what a difference"). So I went down and checked it on my recently purchased system with a wider gamut monitor (97% AdobeRGB) and it was clear as bright sunny day different. But then again on my old PC (which also is calibrated but with an old sRGB monitor) the difference was less obvious (slightly better than iPad and her camera LCD shot but not as good as my new PC).
So while the issue with DSLR's and purple (I believe a metamerism issue) has to do with purple Turning out blue in the capture, this seems to be about purple in the capture showing as blue on some monitors and purple on others.
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#8. "RE: question about color" | In response to Reply # 0
Thanks for posting the "Puzzle of the Day!"
On my Eizo 24 inch calibrated monitor (reputed to display 98 percent of Adobe RGB) I see the camera's LCD version as blue, and the actual photo below as purple. Not a huge difference, but noticeable. On an adjacent, uncalibrated second monitor I use to hold all the Photshop tools, they both appear blue.
The white mat and frame of the photo itself appears an off-white, bluish gray to me. I would expect the slight blue cast of the indirect daylight is somewhere around 7.000 K to 8,000 K, a very blue-white light. The image also appears a stop or so underexposed, probably because you used the camera's reflected light metering system which will always underexpose bright white subjects.
It is my understanding that the color management of images on the camera's LCD screens is not terribly accurate.
Remember also, that images viewed on camera LCDs and computer monitors are created with transmitted light, while images viewed on paper are created by reflected light. In the latter case, the brightness rating of the paper and the color temperature of illuminant will affect the colors of the print. Exposure will also affect the colors on a print. The greater the underexposure, the darker the color.
Purple is close to magenta, which is white light minus green, or red plus blue. There is no magenta in the visible solar spectrum, because green sits between red and blue. Ergo, magentas and purples are subject to individual, subjective interpretation by camera and monitor manufacturers.
Another thought: From the initial perception of the scene by the photographer under the existing ambient illumination at that time, to the finished print hanging on a wall under possibly quite different illumination, there are a dozen or so different human eye/brain and camera/computer interpretations of an image to contend with. My color memory of the original scene vanishes within minutes of leaving the area. Each one of the following interpretations can inject slight, unnoticed modifications of the colors in the image. With careful post processing technique, these can be minimized, but the human eye/brain system is still at work, presenting us with what we expect to see, which is not always what we are actually seeing.
As long as the finished print is what you expect to see, I suspect the on-camera differences are due to the factors discussed in this thread.
You haven't indicated yet what White Balance settings you used for either of the images. This may help.
I always set any and all in-camera processing functions to their neutral or off positions, as a way to minimize the introduction of slight color shifts. For my "Most Accurate" color work, I always shoot in Adobe RGB, 14 bit RAW format, and take a color temperature reading with my Sekonic C500R meter and select the closest possible Custom White Balance setting in the camera. This image becomes my reference image that is never modified in post. I work with a copy and can always go back to this original if I wind up in deep weeds in post. You might check your camera's image processing function settings.
Hope this sheds a bit of light on the issue.
Thanks for your comments Pete ... I think you are on the right track.
HBB in Phoenix, Arizona
Nikonian Team Member
Photography is a journey with no conceivable destination.