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Re: filmscanners: SS120 & Nikon 8000 ... how do they work?



At 03:14 AM 7/12/01 -0700, Art wrote:

>It seems to me for some reason that most of the newer medium format 
>scanners manufacturers decided to forego the zoom lens approach 
>that Minolta has and continues to use with their Multi models, 
>and just basically use the same optics for all the film formats.  
>
>That eliminates the need for fancy (and maybe problematic) 
>mechanics that change the film position or zoom lenses. 
>Other than the Minolta Multi, the other MF scanners seem to work
>similarly to a flatbed, in the sense that regardless of the size of the
>original, the resolution of the CCD remains fixed (in this case at 4000
>dpi.)


I was mistaken.  The lens in the 8000 ED is not a zoom lens.
To quote: "Imaging Optics: Scanner Nikkor ED lens (14 elements in 
6 groups including 6 ED glass elements)"  No mention of zoom here.

This would explain why its 35 mm res is no better than the res 
on 120 film.

However, the upcoming/newly-announced Minolta medium-format 
scanner continues in Minolta's tradition of differing 
resolutions for differing media.  See: 

http://www.imaging-resource.com/NEWS/993665852.html

Minolta also continues the fine tradition of spec 
inflation here, claiming a 16 bit A/D and "4.8D dynamic range."

Res is spec'd at 4800 (in the URL above). I have heard from 
other posts that this is the spec for 35 mm, and that for 
120 film, the res is around 3000 dpi.  This is also "consistent" 
with specs on the Minolta Multi -- the advertised res is for 
35 mm, and the actual res for 120 film formats is some fraction 
of that number.


rafe b.





 




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