Merumeni
Established
Hi All,
I decided to give the new liquid Promicrol a try but can not find any agitation scheme. The producer speaks generally about intermittent agitation but does not give any hint about what intermittent actually should be.
Any advice would be very much appreciated!
I decided to give the new liquid Promicrol a try but can not find any agitation scheme. The producer speaks generally about intermittent agitation but does not give any hint about what intermittent actually should be.
Any advice would be very much appreciated!
haempe
Well-known
Not much experience with Promicrol.
In the rare cases I've used it I agitated 1 min continuous, then 3 gentle inversions per min.
In the rare cases I've used it I agitated 1 min continuous, then 3 gentle inversions per min.
Rico
Well-known
Wow, never thought I would hear that name again! Used Promicrol exclusively in the '70s (powered form, May & Baker), usually with Pan F. Must see what this reborn, liquid form is about.
John Bragg
Well-known
Generally, intermittent means what we acccept as normal agitation. I would start there and change to less if highlights are blown.
Alpsman
Well-known
Normally four times every minute.
Creative_Gift
Newbie
Some tips about Promicrol Film Developer
Some tips about Promicrol Film Developer
Hi All
This is my first post here and I thought I'll share my experiences with the new liquid version of Promicrol. First off, it's not the exact replica of of the original May & Baker version as one of it's key ingrediants is unavailable. However I've had much success with it and here are my findings.
I used it with FP4+ (Set at ISO 125), APX100/Rollei Retro 100 (Set at ISO 100) and Pan_F (Set at ISO 50). All at 20/21 degrees Centigrade. Dilution at 1+14. 30secs inital constant inversions and then 1 inversion every 30secs until complete.
Alternatively, 30 secs inital constant inversion to start with and then 2 or 3 inversions every full minute depends on shooting conditions.
The times for 1+9 dilution are too short for me and this developer is pretty strong working at this setting.
As I often downrate my films by 2/3 to 1 full stop (over expose) in harsh light (not often in England) this helps lift the shadow detail. I agitate as above process but dilute 1+19 to compensate for the reduced film speed and it seems to work better for me than fully trying to find the ideal time/speed rating.
As general rule this version of promicrol gives about 1/2 stop increase on published times not the full-stop speed enhancing charactics of the original 1970's version.
Times from the digital truth website.
Actually, I believe it's a good clean working fine grain developer and should be given more credit that is often spoken about. As champion make chemistry for the other major brands, they don't give out much info or activly promote there own brand themselves. I get mine from Firstcall Photographic in the UK but Silverprint also sell it.
To be candid I tried rodinal many times but was never satified, too grainy and inconsistant in the shadows in 35mm. Love Promicrol - Give it a go!
Hope this helps
Larry
Some tips about Promicrol Film Developer
Hi All
This is my first post here and I thought I'll share my experiences with the new liquid version of Promicrol. First off, it's not the exact replica of of the original May & Baker version as one of it's key ingrediants is unavailable. However I've had much success with it and here are my findings.
I used it with FP4+ (Set at ISO 125), APX100/Rollei Retro 100 (Set at ISO 100) and Pan_F (Set at ISO 50). All at 20/21 degrees Centigrade. Dilution at 1+14. 30secs inital constant inversions and then 1 inversion every 30secs until complete.
Alternatively, 30 secs inital constant inversion to start with and then 2 or 3 inversions every full minute depends on shooting conditions.
The times for 1+9 dilution are too short for me and this developer is pretty strong working at this setting.
As I often downrate my films by 2/3 to 1 full stop (over expose) in harsh light (not often in England) this helps lift the shadow detail. I agitate as above process but dilute 1+19 to compensate for the reduced film speed and it seems to work better for me than fully trying to find the ideal time/speed rating.
As general rule this version of promicrol gives about 1/2 stop increase on published times not the full-stop speed enhancing charactics of the original 1970's version.
Times from the digital truth website.
Actually, I believe it's a good clean working fine grain developer and should be given more credit that is often spoken about. As champion make chemistry for the other major brands, they don't give out much info or activly promote there own brand themselves. I get mine from Firstcall Photographic in the UK but Silverprint also sell it.
To be candid I tried rodinal many times but was never satified, too grainy and inconsistant in the shadows in 35mm. Love Promicrol - Give it a go!
Hope this helps
Larry
Last edited:
Merumeni
Established
Thanks to all and a special thanks to Larry!
It seems very much worth a try - I am still fiddling with different film: if I will find a nice combo I may post some result.
It seems very much worth a try - I am still fiddling with different film: if I will find a nice combo I may post some result.
schlops
Established
I used Promicrol for a few years now and had always good results, even with pushing HP5+ film to 3200!
As Creative_Gift stated the times are too short I added about 20% of time to it to get better results!
As Creative_Gift stated the times are too short I added about 20% of time to it to get better results!
Schlapp
Well-known
Shout digital at it. That agitates it for sure!
wintoid
Back to film
I've been playing with this, but I found it seemed to accentuate grain. I wouldn't call it fine grain, anyway. What do others think?
schlops
Established
I think it's totally fine! I sometimes even developed it so that I would get more grain
