Yahoo Groups archive

Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

Message

RE: [Digital BW] Bit depth, was Minolta DiMAGE Scan Multi PRO

2001-09-26 by Austin Franklin

> >> Really? Absolutely? I thought silver particles made for a
> higher density
> >> than dye clouds.
> >
> > Were you using a point source enlarger for B&W?  If so, you
> might have been
> > getting a "Collier effect".  I believe the Nikon scanners that
> use LEDs may
> > have this same issue...
>
> To my mind it should be the same issue whether the determination is being
> made with a densitometer, condenser, coldlight, point source, LED, or
> eyeballs and a lightbox. I propose that you can get a greater
> density range
> from both BW neg and color chromes, than you can from color neg.

Clearly color chromes, no doubt there, but my measurements of color negative
film vs B&W negative film show that color negative film has a higher (not by
much, but it is higher) dynamic range when measured with a densitometer
(which uses a diffuse light source mind you).

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.