Rodinal with TriX will give you nice "honest" grainIn 35mm
I was only able to get good results at EI200 and R1+50, with a nice long
tonalityDelta400 works quite well, at EI320 and 400 and R1+50. Nice grain and
tonalityFomapan 400 behave more or less like TriX.
In Med Format, grain was there, but since I could only enlarge to 11x14 it was
not so noticeable.
Also adding Vitamin C, as per PatGainers idea helped a lot!
Unblinkineye had a very good article on RodinalRodinal - Oldest Commercial
Developer
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| Rodinal - Oldest Commercial DeveloperAppreciating Rodinal By Ed Buffaloe |
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| View on unblinkingeye.com | Preview by Yahoo |
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The massive Development chart has:
B&W Film Developing Times | The Massive Dev Chart
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| B&W Film Developing Times | The Massive Dev ChartMassive Dev Chart Search
Results Film Developer Dilution ASA/ISO 35mm 120 Sheet Temp Notes Tri-X 400
Rodinal 1+50 100 7.5 7.5 20C Tri-X 400 Rodinal 1+25 200 7 7 20C Tri-X 400
Rodinal 1+50 200 9 9 20C |
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| View on www.digitaltruth.com | Preview by Yahoo |
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From: Gary Marklund <garymarklund@xxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Friday, April 17, 2015 4:17 PM
Subject: [pure-silver] Re: Rodinal
OK, You have my attention. I just went into the darkroom and I have two bottles
of real Rodinal. A 500ml bottle that was opened (and probably used once) in
2005. I shook the bottle and it gurgled like it was new. The other bottle is a
125ml bottle that has never been opened, still has original Rodinal notes
folded over the top of the boxed bottle).
My M6 has been screaming "Feed Me!" for some time. Like Janet, I'm interested
in using it with Tri-X (also Ilford delta 400).
Comments and E.I. and development times more than welcome.
Thanks,Gary
On Fri, Apr 17, 2015 at 1:08 PM, Gary Marklund <garymarklund@xxxxxxxxx> wrote:
OK, You have my attention. I just went into the darkroom and I have two bottles
of real Rodinal. A 500ml bottle that was opened (and probably used once) in
2005. I shook the bottle and it gurgled like it was new. The other bottle is a
125ml bottle that has never been opened, still has original Rodinal notes
folded over the top of the boxed bottle).
My M6 has been screaming "Feed Me!" for some time. Like Janet, I'm interested
in using it with Tri-X (also Ilford delta 400).
Comments and E.I. and development times more than welcome.
Thanks,Gary
On Fri, Apr 17, 2015 at 12:45 PM, `Richard Knoppow <dickburk@xxxxxxxxxxxxx>
wrote:
On 4/17/2015 12:01 PM, Janet Gable Cull wrote:
Richard, will you describe "edge effect"? I wonder if that's what I observed
in my friends scans that I like. I wonder how and why it would do that? Does
it somehow perceive the light and dark of an image, and treat them differently?
Edge effects, sometimes called border effects, are variations in
development at the border of a high and low density area. The nature of the
effect depends on the developer, specifically on whether its reaction products
suppress or enhance development. The effects are very localized because they
are due to diffusion of the developer reaction products in the emulsion. The
usual effect is to increase the contrast at the edge. Because the effect
depends on reaction products its increased where the developer is highly
diluted or where there is insufficient agitation to wash away reaction products
at the surface and bring fresh developer there. When the effect is not extreme
it enhances sharpness. Note that this is sharpness not resolution. Sharpness
developers were long popular for 35mm use because they tend to compensate for
the lack of sharpness caused by insufficient film and lend resolution. More
modern films have better resolution. However, the eye tends to judge sharpness
by edge contrast so a high resolution but relatively low contrast image will
look less sharp than one with high edge contrast but considerably lower actual
resolution. Extreme edge effects can look like someone drew lines around
objects. This used to be a serious problem with motion pictures because the
release print was often several generations from the original. Each generation
increased the edge effects until one got "edge crawl". Edge effects and
compensation are related since both depend on local exhaustion of the developer.
Dome developers, notably hydrquinone, have reaction products that tend to
accelerate development while others, like metol, tend to suppress it. Some
combination developers have little edge effect due to the mutual cancellation
of the effect by the developing agents. Nonetheless, developers like D-76 will
become edge effect developers when diluted to 1 part stock to 3 parts water or
more.
--
Richard Knoppow
dickburk@xxxxxxxxxxxxx
WB6KBL
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