Max. # of B/W film.
Hi all! I have currently shot 2 rolls of Black and white films (Kodak Academy 200 ASA); one was uprated to 400 ASA and the other as such. Presently, Ilford PAN 100 uprated to 200 ASA is in my camera. I have a 300 ml negetive developing tank in which two rolls of film can be simultaneously developed. I shall like to know the maximum number of B/W films that can be developed with one batch of developer. I generally use Kodak D-76 developer at 1:1 dilution. Thanks is advance. With kind regards, Ayash. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
- Original Message - From: Ayash Kanto Mukherjee Hi all! I have currently shot 2 rolls of Black and white films (Kodak Academy 200 ASA); one was uprated to 400 ASA and the other as such. Presently, Ilford PAN 100 uprated to 200 ASA is in my camera. I have a 300 ml negetive developing tank in which two rolls of film can be simultaneously developed. I shall like to know the maximum number of B/W films that can be developed with one batch of developer. I generally use Kodak D-76 developer at 1:1 dilution. Thanks is advance. With kind regards, Ayash. As long as the developer covers the film, you will not have any trouble. If you are using a rotary processor (JOBO) use more developer. In the past, I have developed up to 3 rolls in a 4 roll tank and the result is the same as if I had done them one at a time. The important thing, during agitation, more uniform results will be obtained if the developer completely uncovers the film. Otherwise, the top roll may receive non-uniform development. FWIW. Bob - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
Hallo Bob! From your reply it seems to me that there is no limit to the number of films for batch processing. Do you mean that I can develop as many number of films as I wish provided that the two films in my developing tank is totally covered by the developer? Well, as far as I think, the developer will get used up more and more as I go on using the same solution so a time will come when the strength of the developer will not be enough to carry on the chemical action. Or it may happen like this. I have to allow longer time for developement if I am using the same solution for more than four rolls. Please correct me, if I am incorrect? Let me frame the question in a more precise manner. Can I use the same devoloper at 1:1 dilution for developing four rolls of black and white film in a developing tank which accepts only two rolls at a time? Do you suggest some other dilution or no dilution? Thanks for your comments. With kind regards, Ayash. On Wed, 3 Jul 2002, Bob Rapp wrote: As long as the developer covers the film, you will not have any trouble. If you are using a rotary processor (JOBO) use more developer. In the past, I have developed up to 3 rolls in a 4 roll tank and the result is the same as if I had done them one at a time. The important thing, during agitation, more uniform results will be obtained if the developer completely uncovers the film. Otherwise, the top roll may receive non-uniform development. FWIW. Bob - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
On Wed, 3 Jul 2002, William Robb wrote: - Original Message - From: Ayash Kanto Mukherjee [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Wednesday, July 03, 2002 5:34 AM Subject: Max. # of B/W film. Hi all! I have currently shot 2 rolls of Black and white films (Kodak Academy 200 ASA); one was uprated to 400 ASA and the other as such. Presently, Ilford PAN 100 uprated to 200 ASA is in my camera. I have a 300 ml negetive developing tank in which two rolls of film can be simultaneously developed. I shall like to know the maximum number of B/W films that can be developed with one batch of developer. I generally use Kodak D-76 developer at 1:1 dilution. You need at least 100ml of stock D-76 per 36 exposure/ 120 film. Since you are uprating the film (there is no such thing, BTW), you probably don't want to use the developer 1:1. William Robb Can I use that stock solution further for say another roll of 36 exposure film? From your reply, it seems that the answer is no. Sorry, I could not get the second sentence of your reply. Could you please explain a bit further, if it is not annoying? I shall like to know one more thing. Suppose I am using films without uprating and all the films are of identical speeds. Now there is a term called Batch Processing where more than one films are developed in one go. Now suppose that I have 4 rolls of films to be processed. Suppose I am using a negetive developing tank which can accept 2 rolls of film at once. In Batch Processing, am I supposed to change the developer solution with fresh solution after processing 2 rolls or shall I continue using the same developer solution? With kind regards, Ayash. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
I shall like to know one more thing. Suppose I am using films without uprating and all the films are of identical speeds. Now there is a term called Batch Processing where more than one films are developed in one go. Now suppose that I have 4 rolls of films to be processed. Suppose I am using a negetive developing tank which can accept 2 rolls of film at once. In Batch Processing, am I supposed to change the developer solution with fresh solution after processing 2 rolls or shall I continue using the same developer solution? You might try looking up the info for the film/developer combination you're using on the manufacturer's web site. At my age, considering the frequency of senior moments, I usually check the Kodak or Ilford website before processing to make sure I'm doing things right. :-) Bill KG4LOV [EMAIL PROTECTED] - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
- Original Message - From: Ayash Kanto Mukherjee Hallo Bob! From your reply it seems to me that there is no limit to the number of films for batch processing. Do you mean that I can develop as many number of films as I wish provided that the two films in my developing tank is totally covered by the developer? Well, as far as I think, the developer will get used up more and more as I go on using the same solution so a time will come when the strength of the developer will not be enough to carry on the chemical action. Or it may happen like this. I have to allow longer time for developement if I am using the same solution for more than four rolls. Please correct me, if I am incorrect? Let me frame the question in a more precise manner. Can I use the same devoloper at 1:1 dilution for developing four rolls of black and white film in a developing tank which accepts only two rolls at a time? Do you suggest some other dilution or no dilution? Thanks for your comments. With kind regards, Ayash. D76 1:1 works very wellbut one shot only. Do not reuse and do not use in rotary equipment that specify less solution that would be required to completely cover the film when the tank is upright. Bob - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
- Original Message - From: Ayash Kanto Mukherjee Subject: Re: Max. # of B/W film. Can I use that stock solution further for say another roll of 36 exposure film? From your reply, it seems that the answer is no. Correct. The developer would be exhausted after processing. Sorry, I could not get the second sentence of your reply. Could you please explain a bit further, if it is not annoying? What you called uprating is one of my pet peeves. The generic term is actually pushing the film, and it causes a loss of shadow detail and an increase in contrast. If you are shooting in very flat light, it is not so bad, but often, the environment that pushed film finds itself being used in is high contrast stuff, such as night street photography. I shall like to know one more thing. Suppose I am using films without uprating and all the films are of identical speeds. Now there is a term called Batch Processing where more than one films are developed in one go. Now suppose that I have 4 rolls of films to be processed. Suppose I am using a negetive developing tank which can accept 2 rolls of film at once. In Batch Processing, am I supposed to change the developer solution with fresh solution after processing 2 rolls or shall I continue using the same developer solution? I would use the developer once and discard it, on general principles. Stay with the rule of thumb (for D-76, anyway) which is minimum 100ml of stock solution per roll of film, and discard after use. William Robb - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
Hi Bob! After reading the comments/advice of you and many other PDMLers I have decided not to reuse 1:1 D76 for processing more number of films than indicated. Thanks for your advice. With kind regards, Ayash. On Thu, 4 Jul 2002, Bob Rapp wrote: D76 1:1 works very wellbut one shot only. Do not reuse and do not use in rotary equipment that specify less solution that would be required to completely cover the film when the tank is upright. Bob - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
Re: Max. # of B/W film.
On Wed, 3 Jul 2002, William Robb wrote: What you called uprating is one of my pet peeves. The generic term is actually pushing the film, and it causes a loss of shadow detail and an increase in contrast. If you are shooting in very flat light, it is not so bad, but often, the environment that pushed film finds itself being used in is high contrast stuff, such as night street photography. aah! Now I can see. If I uprate/push a 400 ASA B/W film to 1600 ASA, shall I be able to see grains appearing in the negetive/4 inch by 6 inch sized prints? I have never tried it, so I don't know. I would use the developer once and discard it, on general principles. Stay with the rule of thumb (for D-76, anyway) which is minimum 100ml of stock solution per roll of film, and discard after use. William Robb Yep! I won't do any kind of jugglery this time which may end to ruined negetives. Thanks for your advice. With kind regards, Ayash. - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
