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RE: filmscanners: Stellar ghosts and Nikon Coolscan IVED (LS40)

This might be a silly question - but how closely have you looked
at the original trannie?

With exposures where you have a black background and very bright
points of light you can get bounce back off film plate in the
back of the camera that look like halos.  Can remember what this
effect is called.


Rob Suisted
Nature's Pic Images
New Zealand Nature & Scenic Photography

Email: <<mailto:robsuisted@naturespic.com>>
Have you checked out Nature's Pic Images on the Web yet?.....
Website: <http://www.naturespic.com>

>>-----Original Message-----
>>From: owner-filmscanners@halftone.co.uk
>>[mailto:owner-filmscanners@halftone.co.uk]On Behalf Of
>>Harry Lehto
>>Sent: Saturday, 12 May 2001 06:25
>>To: filmscanners@halftone.co.uk
>>Subject: Re: filmscanners: Stellar ghosts and Nikon
>>Coolscan IVED (LS40)
>>On Fri, 11 May 2001 EdHamrick@aol.com wrote:
>>> You didn't try what I suggested:
>>> 1) Turn off "Device|Auto exposure"
>>> 2) Set "Device|RGB exposure" to "1.0"
>>> 3) Press Scan button
>>Yes I did. In addition to your suggestion of "1.0" I
>>tried also   with
>>exposure 0.5 and 0.1. using single scans and multi
>>scans. In some
>>exposures I loose all the stars (due to shortness of
>>exposure or due to
>>elevated "noise"), but I don't seem to get rid of the
>>ghosts, so that I
>>can still see the stars. Maybe I should spend more
>>time exploring the
>>available parameter space.


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