Thanks for the lesson but all I really wanted to know is exactly where
is the haze. Maybe I'm just looking in the wrong place.
Chuck Norcutt
Ken Norton wrote:
>> I'm afraid I don't see any "haze" and have no idea what y'all are
>> carryin' on about.
>>
>
>
> That's OK, Chuck. It's like MPEG audio compression--it's better that you
> not know what to look/listen for.
>
> :)
>
> If you really want to know, keep reading.
>
> The Nikon 4x and 5x series scanners have a mirror. The sensor is 90 degrees
> off from the orientation of the film. Unfortunately, this mirror is situated
> an inch or two below the film. As it is below, dust will enter the film gate
> and settle downward onto the mirror.
>
> The quad-color LED lightsource is above the film and the image is projected
> downward onto the mirror and through a high-quality lens onto the
> linear-sensor. If the mirror is dirty, the image is slightly diffused--not
> at all unlike shooting a picture through a dirty filter.
>
> Periodically I'll blast some air into the scanner to move the dust-puppies
> around and last week when I checked the mirror, it was still clear enough
> that I haven't felt the need to pop it open yet. Besides, as I have been
> scanning mostly negs these days, the high-contrast of a Velvia slide isn't
> present so I don't get the diffusion AND the diffusion goes the other
> way--dark bleeds into light areas.
>
> Once in a while I'll get a streak on the images when a dust particle settles
> on the sensor, but can usually dislodge it with either a blast of air or by
> turning the scanner face down and rapping on the case--followed by more air
> blasts, etc.
>
> To put all this in perspective, this haze issue is about the only real issue
> with the Nikons. Other than the light-source which is more columnated
> (accentuating grain), the Nikons are built like tanks and have no bad
> habits. I can recommend them without hesitation.
>
> AG
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