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Re: filmscanners: Film grain vs 2700 DPI scan resolution



On Sat, 30 Jun 2001 23:31:24 -0400  rafeb (rafeb@channel1.com) wrote:

> >1. With 200 film, is the grain "large" enough for the 2700 DPI to 
> record it?
> >If so could some one describe it (or email me a couple scan clips 
> showing
> >examples?)
> 
> 
> To answer your question.  Yes.

I suggest you stick some of your old ISO200 pics through that LS8000, and 
see if they now exhibit the 'grain' they did at 2700ppi - I bet they 
don't:)

One interesting anomaly of the SS4000 is that whilst it shows very little 
grain from Fuji Superia 400, and not much even with 800, it shows some of 
the gritty pseudo-grain with Fuji 200 which I ascribe to aliasing. It 
certainly isn't present in lab prints direct from the negs. I believe the 
ISO200 grain just happens to be of a range of sizes which cause an aliased 
result with this CCD pitch, where 400 and 800 are larger and do not - so 
you see 'true' grain from these materials.

To see true grain from ISO50-100 colour neg or tranny, I think you'll have 
to be on the far side of 8000ppi. 

Regards 

Tony Sleep
http://www.halftone.co.uk - Online portfolio & exhibit; + film scanner 
info & comparisons




 




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