Archived posting to the Leica Users Group, 2011/04/29

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Subject: [Leica] LUG Digest, Vol 47, Issue 320
From: john at chiaroscuro.co.nz (John McMaster)
Date: Sat, 30 Apr 2011 12:38:13 +1200
References: <mailman.733.1304120265.1020.lug@leica-users.org> <4DBB57C9.6020705@halcyon.com>
 
I agree, it must be nearly 20 years ago that I spent a long time testing
FP4+ and Tri-X (35mm and 120) for exposure/development. The old adage of
expose for the shadows and develop for the highlights comes true ;-) Using a
densitometer for normal exposure/development each were (AFAIR) half the
manufacturers rated speed to get the full Zone scale. The quality of my
prints increased greatly after these tests, and I did the N+1, N+2, N-1, N-2
tests as well!!

john

-----Original Message-----


However, I will say that the only way you are really going to know what your
iso ought to be is to go to the trouble of testing. Most people don't want
to do this
In reply to: Message from kingfisher at halcyon.com (Larry Bullis) ([Leica] LUG Digest, Vol 47, Issue 320)