Originally posted by WPRESTO Cannot put my finger upon or verbalize it. The colors seem "deeper" or "richer." Perhaps there's a difference in which colors the sensor emphasizes, as, for example, Kodachrome had wonderful blues, and Velvia made warm colors pop in soft, dim light, but tended to look carnival-like in full bright sun. In looking at K1 images posted here, I find myself thinking "wow, look at that color, it's wonderful" more often than with images taken by any of the APS-C bodies. Maybe it's psychological, but I don't think so. Look above at the graffiti posted by sculptormic. There are many similar images on the "street art" thread, but when I came to that post, again, I was struck by the quality of the colors.
Just tossing this out there (keep in mind I'm just speculating and talking out of my @$$ here). It seems to me that the reds clip with K-1 a bit easier than with K-5 or K-7 (and yes, I always shoot raw, so it's not the color settings of the camera). Also, the Shutterbug review mentioned something that K-1 works pretty well with infrared filters? Could there be a connection to the "color profile" of the K-1? Of course the specifics of the beyer filter implementation, which we are not privy to, come into play also.