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Hello,
I use Agfa CP-GU. I shot some sheets so far in order to find a good EI/developer combo. At the moment I'm around iso 12, developed in HC110 1+63 for about 4.5' at 22°C, continues agitation with Cibachrome drum. The density is now quite good but the contrast still too high. Any suggestion to get a softer contrast?
Thank you
Roberto i tried this Agfa at Iso25 + caffenol C at 22C /agitation every minute for about 8-10min.
That gave me good density and mid to low contrast.
If you want to lower the contrast via developing you have the following options:
Drop the temperature to 20 degrees Celsius (or lower).
Less agitation.
Try a higher dilution f.i. 1+79 or 1+100.
I have no experience with the Agfa film but made good ones with Fuji and Kodak and HC-110 1+63 with this.
Usually I am working with ISO 25 to 50. If I recall correctly there is quite a drop in contrast between ISO 50 to ISO 25 so ISO 12 should give you quite a soft one.
Hope this helps.
Thank you. I found a good way of avoiding scratches by using the cibachrome rotary drum. The point is, agitation is continuous. I'd try to increase the dilution to 1+79 and eventually to lower the temperature to 20°C. I'll post some pictures then.
Sure, Roberto. I guess you can achieve a lot via the temperature. I work with 20 C all the time and use your times for ISO 12 too (HC-110 1+63, 20C, 4:30 min).
What ISO would you rate this X-ray film at - as a starting point? I can’t find my notes from when I was messing with this previously. It is a single sided emulsion - I believe it is for mammography.
And any advice on development times would be great too!
Attachment 231448