You need speed then there is no compare, I have never use slide with speed
over ISO100, try some RDP III you will see the different. I have did a lots
of scans with LS2000 (2700dpi) and LS4000ED (4000dpi) I always found
negatives are more grainly than slides even both are ISO100.
C.H.Ling
----- Original Message -----
From: "Moose" <olymoose@xxxxxxxxxxxxxxx>
>
> It is clear to me, based in this case on scans a slide, which I posted,
> that apparent grain in a scan may be considerably larger and more
> noticeable on scanners of different dpi resolutions. I think that is a
> function of the relation between grain size/spacing and the spacial
> sampling characteristics of the scanner, rather than whether the image
> is pos or neg.
>
<snap>
>>
> Well, I don't know enough to even get into a meaningful discussion of
> the graininess of current pos and neg films. Back when I shot a lot of
> slide film, the grain of 200 and up iso films of both kinds seemed about
> the same to me. Certainly there is some grain in the samples in lighter
> OOF or otheriwse smooth, undifferentiated backgrounds, particularly as
> there there is a fair amount of enlargement in some images. I simply
> don't find that as objectional as working at 50 or 100 iso with slide
> film. Greater speed and latitude are more important to me. So it appears
> to be a matter of taste in the trade-off of photographic variables. One
> of the reasons I like the 300D so much is that it has less grain/noise
> at higher isos than film does. That way, I can have my cake and eat it
> too.
>
> Moose
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