[alt-photo] Re: Vandyke exposure amny. w/ NuArc 26-1KS?

[Terry King]

Loris


Are you applying an arbitrary standard to your negatives;  are not they related to your judgement ?


Why do you say ' standard ' exposure when the qualifications you apply to paper, coating, make and model number of the exposure unit, age of the bulb and so on make your conditions highly specific rather than 'standard' ?


Surely a quick test to establish the exposure for a particular negative would be better.


Terry












-----Original Message-----
From: Loris Medici <mail at loris.medici.name>
To: 'The alternative photographic processes mailing list' <alt-photo-process-list at lists.altphotolist.org>
Sent: Fri, 16 Jul 2010 6:17
Subject: [alt-photo] Re: Vandyke exposure amny. w/ NuArc 26-1KS?


Irrelevant in the context of digital negatives, since all the negatives have
exactly the same contrast range...

-----Original Message-----
From: alt-photo-process-list-bounces at lists.altphotolist.org On Behalf Of
Terry King
Sent: Friday, July 16, 2010 7:36 AM
To: alt-photo-process-list at lists.altphotolist.org
Subject: [alt-photo] Re: Vandyke exposure amny. w/ NuArc 26-1KS?

Loris
Unless all your subjects have the same contrast range, there is no standard
exposure.

You need to know:
1. the d max potential of the process , i.e. the maximum density negative
that the process will print
2. the d max of your negative for a particular image'

Your exposure will then be 2 in relation to 1

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