Massive Chart and PyroCat All Over The Place?

craigclu · May 28, 2007

I was just checking something else and took a look at the PyroCat listing on their chart.

http://www.digitaltruth.com/devchart.html

There appears to be many erroneous entries (19 minutes for Acros?). Could we compile some personal findings in here from its many users and compile some better data for them to post? It could give new users a better start on success with PyroCat and I'm also a bit interested in what people are doing with the various versions regarding times/temps/agitation schemes, etc.

I've settled into a habit of PyroCat-MC, 1:1:100 @ 72°F, use 1 minute initial gentle inversions (with a slight twist), then 1 minute increments with 2 gentle inversions. PanF+@32, FP4+@80 and HP5+@200 for 8.5, 9.5 and 11.5 minutes. This is getting me just the level of edge effect that I find pleasing and is very predictable for me with my incident metering habits. This for 35mm and 120 roll film use.

Thomas Bertilsson · May 28, 2007

For what it's worth, I believe Ed Sukach has some good starting times posted for pyrocat on his web site http://unblinkingeye.com/Articles/PC-HD/pc-hd.html (Jobo Expert times) and http://unblinkingeye.com/Articles/Pyrocat/pyrocat.html (I believe tray times) that could help out.
I don't trust Digitaltruth for anything as it varies so much from person to person and camera to camera as well as metering techniques. There is no credibility to the references, nobody knows who posted what and how skilled they were. It could be a good reference if they had more criteria associated, like a neg scan posted, or if they listed what type of printing they were doing (alt process, enlargements to silver, or scanning).

- Thomas

sanking · May 28, 2007

Thomas Bertilsson said:
For what it's worth, I believe Ed Sukach has some good starting times posted for pyrocat on his web site http://unblinkingeye.com/Articles/PC-HD/pc-hd.html (Jobo Expert times) and http://unblinkingeye.com/Articles/Pyrocat/pyrocat.html (I believe tray times) that could help out.
I don't trust Digitaltruth for anything as it varies so much from person to person and camera to camera as well as metering techniques. There is no credibility to the references, nobody knows who posted what and how skilled they were. It could be a good reference if they had more criteria associated, like a neg scan posted, or if they listed what type of printing they were doing (alt process, enlargements to silver, or scanning).

- Thomas

Just want to point out that the film develpment times for silver printing in my own article at unblinkingeye.com are for a Grade 2 or 2 1/2 graded silver paper. If you are using VC papers and want to print with an equvalent grade number these times should be increased by about 50%.

Sandy King

rootberry · May 28, 2007

I'm getting right around 10min in my jobo, slowest setting for Fp4 using pyrocat-MC 1:1:100. Shooting the film at 50asa.

Travis Nunn · May 28, 2007

Thomas Bertilsson said:
For what it's worth, I believe Ed Sukach has some good starting times posted for pyrocat on his web site http://unblinkingeye.com/Articles/PC-HD/pc-hd.html (Jobo Expert times) and http://unblinkingeye.com/Articles/Pyrocat/pyrocat.html (I believe tray times) that could help out...

- Thomas

Unless he's changed his name, I believe Unblinkingeye is Ed Buffaloe's website.

tchamber · May 28, 2007

For what it's worth, I do Acros 100 in Pyrocat 2:2:100 for 11 minutes (68 degrees). Nothing very scientific about that choice but it comes out okay. I figured the 19 minutes had to be wrong.

erikg · May 29, 2007

It would be good to add to and update the information there, especially in the cases where it says "stock" under dilution. For example: Delta 100 45 min., dilution "stock" and no notes? If someone used that as a starting point they would be far far off the mark. However, 45 minutes is a good time for semi-stand development with a dilution of 1:1:250, as per Ed Buffaloe's site. That has certainly worked very well for me.

fhovie · May 29, 2007

I have FP4 at ASA80 for 12 minutes 1:1:100 at 70F - That will give me about 9 stops of coverage for an DR for Grade 2 Fiber paper (DR 1.25)
Usually I am not shooting an SBR of 9 stops - I am shooting 5 stops or less - so for FP4 I use the semistand method at 1:1:150 for 54 minutes at 70F with 4 aggitations - 5 sec every 10min 48sec. - I get the contrast I am looking for on Grade 2 fiber papaer in a condenser enlarger - This is one of my standard methods for 4x5 film

TheFlyingCamera · May 29, 2007

I'm doing FP4+ in Pyrocat HD, 1:1:100, in a Jobo, 11 mins @ 75f, @ iso 64. I'm printing them on Pt/Pd. Fomapan 200 gets iso 100, 13 mins @ 75f.

Thomas Bertilsson · May 29, 2007

Names and my memory

t_nunn said:
Unless he's changed his name, I believe Unblinkingeye is Ed Buffaloe's website.

Of course you're right. My apologies to both Mr. Buffaloe and Mr. Sukach.
- Thomas

jimgalli · May 29, 2007

Efke 100 Cirkut film. 2:3:100 12.5 min @ 72 degrees.

Massive Chart and PyroCat All Over The Place?

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