ab7rn
Loc: Portland, Oregon
Dadrian wrote:
Resently I have gotten really into black and white film photography- but with it some of my rolls are very grainy. I can not figure it out! At first I thought it was just the enlarger, maybe I was forceing too much light thur - makeing it grainy. But i discovered it is just happening to sertain rolls! Any ideas on why that happens and how to avoid/ fix that?
Years ago, in my film days I used D76 diluted 1:1 with Tri-x, Panatomic-x and Adox KB14 with 2 1/4 and 4x5 film and got very good results. The time and temperature were closely monitored.
Oh the good ol' days when I developed my own B&W film! I don't miss 'em at all!
photoman022 wrote:
Oh the good ol' days when I developed my own B&W film! I don't miss 'em at all!
I have developed five rolls this week. I would definitely miss it!
Over exposure, over development causes dense b&w negatives. oddly the reverse is true with color negs.
FilmFanatic wrote:
alycat wrote:
Over exposure, over development causes dense b&w negatives. oddly the reverse is true with color negs.
What he said
I didn't express my self very well. Over exposure, over development causes dense b&w negs, and more grain than there would be with normal development and exposure. the reverse is true with color negs. Too many beers tonight.
BHC
Loc: Strawberry Valley, JF, USA
I would try Ilford Perceptol as a developer. Also, be very careful of all water temps; I suggest a thermostatically controled mixer manifold.
alycat wrote:
Over exposure, over development causes dense b&w negatives. oddly the reverse is true with color negs.
I think you mean colour transparancy film, not negative film.
Pablo8 wrote:
alycat wrote:
Over exposure, over development causes dense b&w negatives. oddly the reverse is true with color negs.
I think you mean colour transparancy film, not negative film.
I regularly shoot color neg several stops over and no grain to be seen. i guarantee you he is telling the truth
Pablo8 wrote:
alycat wrote:
Over exposure, over development causes dense b&w negatives. oddly the reverse is true with color negs.
I think you mean colour transparancy film, not negative film.
No, I mean negative film. They used to recomend slight over exopsure with color negative film
Dadrian wrote:
Resently I have gotten really into black and white film photography- but with it some of my rolls are very grainy. I can not figure it out! At first I thought it was just the enlarger, maybe I was forceing too much light thur - makeing it grainy. But i discovered it is just happening to sertain rolls! Any ideas on why that happens and how to avoid/ fix that?
I used to bulk roll Kodak Tmax 400. The tech read about the film seemed to be a god sent. However, I found the film to be short of all the promises. I shot and processed over 60 rolls in test to get the developing and printing right but it was a waste of time. Then I discovered the Kodak white papers were WRONG! A fellow pro gave me a correction factor for developing. I proceed to create my own time/temp charts for 100, 200, 400, 800, 1600 and 3200 ISO for my bulk roll 400 ISO Tmax film. I got creamy smooth images in the studio at 100 and didnt see grain until I went to 3200. It was fantastic. Im not downing Illford. I loved their products. Illford polycontrast filters and paper. I did my best work with this combo. It takes a delicate balance of exposure, time and temperature to get the results you are looking for. Id share my charts with you but they are buried in storage someplace. ( I gave up film over 25 years ago ) Watch your processing carefully and learn to develop your own set of standards. It may take time but its worth it in the long run. I still love film and miss its characteristics. ( but I wont go back for anything )
Reticulation? That went out long time ago. Newer films don't reticulate.
Ilford's high speed black and white films are not the finest grain high speed films. Even when developing in a fine grain developer, the grain might go as bit "creamy" but will still be evident.
That said, grain is not necessarily an evil. You can be tack sharp with grain or not.
In processing, of course, you must be temperature stable across the process including the wash water - all at the same temp, which should hover between 68-72 degrees. In developing millions of frames in the olde days, this temp range proved best. Using a water jacket is recommended as well, not necessarily a recirculating one, just. A tub with temperature correct water in which all your chemistries AND developing tank reside.
Further, your agitation cycle can be an issue. Don't over-agitate. Finally, the overall length of the wet phase of the process should be kept to a minimum with hypo-killers like Permawash to shorten the wash. Temperature controlling the wash water to the process temp is important.
Well, I am on a plane, so I must keep it short.
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