Original file from: http://upload.wikimedia.org/wikipedia/commons/6/6a/Jan_hoet.jpg (looks fine for me)
Some thumbnails (for now I could only find [[commons:File:Jan_hoet.jpg]] are negative.
Extracted EXIF info with Apple Preview:
{
ColorModel = CMYK; DPIHeight = 300; DPIWidth = 300; Depth = 8; Orientation = 1; PixelHeight = 1299; PixelWidth = 880; "{Exif}" = { ColorSpace = 65535; PixelXDimension = 880; PixelYDimension = 1299; }; "{JFIF}" = { DensityUnit = 1; JFIFVersion = ( 1, 2 ); XDensity = 300; YDensity = 300; }; "{TIFF}" = { Compression = 1; DateTime = "2010:07:03 20:26:34"; Orientation = 1; PhotometricInterpretation = 5; ResolutionUnit = 2; Software = "Adobe Photoshop CS3 Windows"; XResolution = 300; YResolution = 300; };
}
Extracted Metdata by MediaWiki:
Metadata
Width 2,121
Height 3,132
Compression scheme Uncompressed
Pixel composition 5
Orientation Normal
Number of components 4
Horizontal resolution 300 dpi
Vertical resolution 300 dpi
Data arrangement chunky format
Software used Adobe Photoshop CS3 Windows
File change date and time 20:26, 3 July 2010
Color space 65535
Version: 1.17.x
Severity: normal
URL: http://commons.wikimedia.org/wiki/File:Jan_hoet.jpg
Attached: