PMK vs HD

I have run to tests with these developers. One using 35mm FP4+ and one using
4x5 Tri-X and FP4+. The first article was in the June/July 04 CameraArts and th
second will be in the July/Aug 04 View Camera. The result seem consistent in
both tests

PMK creates more stain,more elevated high values, a slightly sharper print and
just a little more grain. I also seem to get a little more film speed from PMK.

One alwys has to calibrate their film and fim developer to te paper they are
using. This is true with a staining developer and a non-staining developer. The
comments about PMK not working with variable cntrst paper ae innaccurate. If
you ar not getting enough contrast with a stainng developer then increase your
developing time just as you would with a non-staining developer.

steve simmons

"CamArtsMag" wrote in message
...
I have run to tests with these developers. One using 35mm
FP4+ and one using
4x5 Tri-X and FP4+. The first article was in the June/July
04 CameraArts and th
second will be in the July/Aug 04 View Camera. The result
seem consistent in
both tests

PMK creates more stain,more elevated high values, a
slightly sharper print and
just a little more grain. I also seem to get a little more
film speed from PMK.

One alwys has to calibrate their film and fim developer to
te paper they are
using. This is true with a staining developer and a
non-staining developer. The
comments about PMK not working with variable cntrst paper
ae innaccurate. If
you ar not getting enough contrast with a stainng
developer then increase your
developing time just as you would with a non-staining
developer.

steve simmons

It would be interesting and maybe useful to compare a Pyro
staining developer like PMK or even old ABC Pyro against a
standard non-staining developer, say D-76 or some more
modern type like Xtol and compare the resulting prints.
Prining quality should be tested on both graded and VC
paper. Its a lot of work plus its hard to determine the
_effective_ density of Pyro negatives because of the
spectral transmission of the stain. The densitometer filter
must be reasonably close to the spectral sensitivity of the
paper to make the readings valid.
Staining developers can be looked at as a combination of
a developer and an intensifier.

--
---
Richard Knoppow
Los Angeles, CA, USA

In article .net,
"Richard Knoppow" wrote:

It would be interesting and maybe useful to compare a Pyro
staining developer like PMK or even old ABC Pyro against a
standard non-staining developer, say D-76 or some more
modern type like Xtol and compare the resulting prints.
Prining quality should be tested on both graded and VC
paper. Its a lot of work plus its hard to determine the
_effective_ density of Pyro negatives because of the
spectral transmission of the stain. The densitometer filter
must be reasonably close to the spectral sensitivity of the
paper to make the readings valid.
Staining developers can be looked at as a combination of
a developer and an intensifier.

I find the Spot probe which is designed to read Color of my
Colorstar 3000 to be very effective at reading both stain and Density
of PMK/Pyro Negatives.
--
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