[pure-silver] Re: Tonal gradation/smoothness in 35mm negs c.f. larger formats
- From: "mail1" <mail1@xxxxxxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 15 Jan 2008 18:50:13 -0800
In regard to numbers and print size there a lot of factors that comes to
play in this matter. Ralph Lambrecht chapter “Sharpness and Depth of Field”
in his book ”Way beyond Monochrome” explains in detail the problem of making
a print from 35m/m verses 6x6 and 4x5 negatives. Ralph also addresses the
other critical issues involved in this matter.
Barry Thornton in his book “Edge of Darkness” also explains in detail the
players’ involved. The issues are well cover by Barry in his second chapter
“Lamb in Wolf’s Clothing”. Also he writes about smoothness in his chapter
“Against the Grain”. The book is a great read, and most informative.
I have lost my allure for smoothness, as it sometime appears to be
illusionary in 35m/m format.
Jonathan Ayers [mail1@xxxxxxxxxxxxxxxxx]
_____
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Peter Badcock
Sent: Sunday, January 13, 2008 8:51 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Tonal gradation/smoothness in 35mm negs c.f.
larger formats
Hi Bob and Ken,
thanks for your replies.
So clearly this effect is predominately related to the grain size. If the
grains were sufficiently small (or even non existent), then I assume this
effect would not be seen at all. I know it probably seemed that my question
had an obvious answer, but I somehow got the impression from an APUGian's
answer that the effect wasn't related to the grain.
So does anyone have some hard numbers ? e.g. if I use a fine grained film
such as PanF with a low accutance developer, what size enlargement (when
viewed from a 'typical' set distance) would I begin to see differences in
the tonal smoothness between the 35mm neg print and say a 4x5 neg print.
(note I see this question as being different to the common question: "at
what size enlargement could I begin to see the grain in the 35mm neg's print
when viewed from a 'typical' set distance")
regards
Peter
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