Re: Blue CCD Banding: A Little Test

["dickbo" <dickbo@xxxxxxxxxxxxxxx>]

----- Original Message -----
From: <rafe.bustin@verizon.net>
To: <scan@leben.com>
Sent: Friday, April 12, 2002 12:20 PM
Subject: Re: Blue CCD Banding: A Little Test


> On 12 Apr 2002 at 9:00, dickbo wrote:
>
> > Noise on the yelllow channel is never going to be a problem a problem
> > because the eye cannot see it on the printed output.
>
>
> I'm afraid I don't agree with that at all.  It was a real
> problem on my first filmscanner, (a Microtek) and even
> occasionally on my SprintScan 35 Plus -- yellowish streaks
> in areas that should have been blue or gray sky.

Hardly noise I think. Noise shows up as a grain like structure and would be
evenly distributed across any given separation.

> Of course there is no yellow channel at the sensor --
> problems with yellow (on the print) are generally attributable
> to the blue channel (yellow being the absence of blue.)
>
>
> rafe b.
>
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