I have a D1 and I noticed a purple tint to my photographs (outdoors, natural light). Is this common to the D1 or is there a setting I can adjust?
#1. "RE: Nikon D1 and purple haze" | In response to Reply # 0BJNicholls Charter MemberWed 29-Nov-00 07:19 PM
The purple fringe problem is common to many digital cameras. The suspected cause that I've read about is that the angle of incidence of light hitting the CCD chip is too high, causing a chromatic aberration on the imaging surface. The fringing is most easily noticeable in outdoors shots with images of branches against a blue sky. The effect gets worse as you view further toward the edges of the image frame.
There may be some Photoshop tricks to minimize the effect, but since the problem appears to be rooted in the CCD hardware, I don't think there will be any real fix for the problem in the current cameras.
#2. "RE: Nikon D1 and purple haze" | In response to Reply # 1Wed 29-Nov-00 08:59 PM
Thanks, I had heard rumors of this problem but did not believe it until I compared prints from film versus those from the digital camera. It does not seem to be a problem for indoor pictures using flash. I have just been using photoshop to adjust the color.
#3. "RE: Nikon D1 and purple haze" | In response to Reply # 0
If you're referring to an overall purple (or magenta) cast to your pictures - rather than fringing round bright objects - then you're seeing a known issue with the D1's internal processing: it seems the camera uses a colour space similar to NTSC when generating JPEG or TIFF files and this leads to a magenta cast that is particularly noticable in skin tones - the dreaded D1 "purple people". Nikon Europe have acknowleged this problem - see http://www.nikon-euro.com/nikoneuro_en/hit/dc/dcd1/en/HIT_dcd1_en_21.htm for details.
One solution is to use Photoshop to do a profile to profile conversion from NTSC to the space you normally use for editing e.g. AdobeRGB.
A better solution is to use RAW mode and QImage (http://www.charm.net/~mchaney/imaging) or Bibble (http://www.bibblelabs.com) to process the files. These programs are both shareware so you can try them out and decide which one you like before you buy. Incidentally, you'll find that you have to 'tweak' the conversion settings of both programs: by default QImage extracts every last bit of shadow detail meaning it tends to bring out any noise and doesn't saturate the colours enough for my taste, while Bibble goes to the other extreme and tends to black out shadows and darken the colours. Once they're suitably adjusted there's little between them: it comes down to personal preference.
There is a second possible cause for incorrect colour: the D1's automatic white balance is often inaccurate since it's done TTL when the shutter is released (instead of being continuously monitored as on, say, the CP990) and seems to skew the colours towards the magenta. Using manual white balance will give you much better colour, but using the preset mode (where you take a shot of a white object first) will really pull the colours into line.
There's a great summary of the D1's colour 'quirks' and how to solve them in Phil Askey's D1 reveiw at http://www.dpreview.com/reviews/nikond1
Hope that's all some help...
#4. "RE: Nikon D1 and purple haze" | In response to Reply # 3Fri 01-Dec-00 03:07 AM
I took a picture in a Japanese garden that had great colors except all of the rocks (there were many) were magenta. So, yes the color can permeate throughout the picture. The camera is set for automatic white balance so that seems to fit your description of the problem. I think I will start using the preset mode and shooting a white object and go from there. Thanks for all the references, I did not get any help going to the Nikon home pages.