[pinhole-discussion] agfa grade 1 craziness
I bought a package of AGFA grade 1 RC paper a few weeks ago (old stuff i think - it was cheap) and as I took their tape off of the black bag in the dark, I thought I noticed a flash of light. I was right!!! As I slowly pulled the sticker off of the bag it was creating a bunch of little sparks!! Has anyone ever seen this?!? rob
Re: [pinhole-discussion] Film Holders, Paper Negs and No Worries
- Original Message - From: Gregg Kemp gregg.k...@sas.com I believe I was using Ilford multi-contrast RC paper (a bit thicker than your well-chosen single weight), hand cut to size. And I suspect I do hold my mouth wrong a lot of the time. So any of these may have led to my frequent paper jams. FWIW, I have used Ilford RC in 8x10 holders and have no problem, will try 5x7 soon and report. Guillermo
Re: [pinhole-discussion] 6 x 8 film?
Slightly off-topic, but I was hoping someone might be able to tell me if there ever was (or still is?) a standard film size that was anywhere close to 6x8 inches? I was in Japan last week and found an ancient fold-up wooden 8x10 view camera with perfect bellows, but no lens or lens boards. I thought great for pinholing and bought it for a mere $65. When I got it home I began to look at it and realized that it wasn't 8x10 at all. It was designed for glass negatives but the one film holder that came with it has sheet film adapters provided. Is there any such film? or will I have to cut up 8x10 sheets? Thanks Colin __ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com
Re: [pinhole-discussion] lowering developer pH with baking powder
Lemon juice would likely work. I've used baking powder. Baking powder has sodium bicarbonate and a mild acid of some kind. Its used to create carbon dioxide bubbles. In a solution the acid reacts with the sodium bicarbonate. If you put enough baking powder in developer it lowers the pH enought to make it act like Dave Soemarko's LC1. There is usually some other ingredients like corn startch in the baking powder. This makes your developer solution into a white murky mess, but it works. You really need to wash the film. I used a water wash instead of stop bath for this. The speed of the film drops as more baking powder is added. The ASA of the film is about 1 when the developer has the pH to make a flat continuous tone negative. You can also get a mild reduction in contrast by using baking soda - this lowers the pH a bit - similar to using mildly diluted paper developer. The same effect can be done by adding a small volume of stop bath to the developer. It will lower the pH slightly. Gord On Wed, Dec 19, 2001 at 11:31:28AM -0500, R Duarte wrote: Date: Wed, 19 Dec 2001 11:31:28 -0500 From: R Duarte ra...@rahji.com Subject: [pinhole-discussion] lowering developer pH with lemon juice? To: pinhole-discussion@p at ??? Anyone ever done it (to make the developer less active)? ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
[pinhole-discussion] lowering developer pH with lemon juice?
Anyone ever done it (to make the developer less active)?
RE: [pinhole-discussion] Film Holders, Paper Negs and No Worries
-Original Message- From: ethereal art [mailto:ethereal...@mindspring.com] Sent: Wednesday, December 19, 2001 8:54 AM To: pinhole-discussion@p at ??? Subject: [pinhole-discussion] Film Holders, Paper Negs and No Worries Gregg Kemp wrote: I've loaded paper in 4x5 film holders, and found it tends to wrinkle up, because of its thickness. It can be done, but you may loose some paper trying to do it. Gregg I think you are holding your mouth wrong when you load your paper negatives. I use single-weight paper in my film holder constantly and I have never had a problem with crunching paper. Sweaty palms?..sticky fingers? I use 4x5 paper...cut to 4x5...and it fits fine in the 4x5 film holders. Of course, now that I have said this.sigh. I will have to go try this again and be prepared for problems. B-) Rosanne Maybe it was the sticky bubble gum wrapper that kept wrinkling up(?) :) I believe I was using Ilford multi-contrast RC paper (a bit thicker than your well-chosen single weight), hand cut to size. And I suspect I do hold my mouth wrong a lot of the time. So any of these may have led to my frequent paper jams. Gregg
[pinhole-discussion] Film Holders, Paper Negs and No Worries
Just a suggestion, have you tried to fasten the paper with a scotch tape so the paper won't move inside of the holder? Since we are working under safety light it won't be a problem working this way. Cheers Joao Gregg Kemp wrote: I've loaded paper in 4x5 film holders, and found it tends to wrinkle up, because of its thickness. It can be done, but you may loose some paper trying to do it. Gregg I think you are holding your mouth wrong when you load your paper negatives. I use single-weight paper in my film holder constantly and I have never had a problem with crunching paper. Sweaty palms?..sticky fingers? I use 4x5 paper...cut to 4x5...and it fits fine in the 4x5 film holders. Of course, now that I have said this.sigh. I will have to go try this again and be prepared for problems. B-) Rosanne
Re: [pinhole-discussion] developing ortho
In time, I'd like to add that Gordon is using a Kodak film that I believe is also RA. So, if you have the ilford developer at hand and would like to compare and report I'd appreciate it. Best regards to all, Joao
Re: [pinhole-discussion] developing ortho
Hi George, Recently I made a few tests with the ortho litho films I have. I used kodalith, Arista and Agfa darkroom RA. With the first 2 films, LC1 with the dilution recommended by Cor Breukel worked fine (water 750 ml, Metol 3 g, Sodium sulfite 60 g, Hydroquinone 3g, water to 1 l, to use dilute 1:4 with water and develop for 6,5 min at 20 o C), Iso rated is about 1. With the Agfa (and I suspect with all the RA films) the densities are still very high. I am using for this film Ilford multigrade liquid paper developer concentrated solution 50 ml to 4 l of water and I am getting pretty good results, times from 1,5 min to 4,5 min. depending on the density wanted, iso also about 1 at 24 o C. The 1,5 min development gave me a good neg. for gum. Cheers Joao George L Smyth wrote: --- hol...@duke.usask.ca wrote: Hi: When processing ortho film for pinhole the objective is usually to obtain a normal continuous tone negative. This means one must drastically reduce the contrast of ortho film to be useful for pinhole - although there is nothing stopping someone from making high contrast negatives on purpose. There doesn't appear to be a commerically made super low contrast developer to make continuous tone negatives from ortho film. I've used Dektol in the 1+10 to 1+20 dilution (depending upon the scene). The three images currently in the Alternative Processing Images section of my website shows examples of this. These are not pinhole images, but were created through negatives that were made by projecting slides on halftone film and developing with dilute Dektol. Cheers- george = Handmade Photographic Images http://members.home.net/hmpi/ __ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
Re: [pinhole-discussion] developing ortho
--- hol...@duke.usask.ca wrote: Hi: When processing ortho film for pinhole the objective is usually to obtain a normal continuous tone negative. This means one must drastically reduce the contrast of ortho film to be useful for pinhole - although there is nothing stopping someone from making high contrast negatives on purpose. There doesn't appear to be a commerically made super low contrast developer to make continuous tone negatives from ortho film. I've used Dektol in the 1+10 to 1+20 dilution (depending upon the scene). The three images currently in the Alternative Processing Images section of my website shows examples of this. These are not pinhole images, but were created through negatives that were made by projecting slides on halftone film and developing with dilute Dektol. Cheers- george = Handmade Photographic Images http://members.home.net/hmpi/ __ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com
Re: [pinhole-discussion] Will paper work in 4x5 film holder?
Just a suggestion, have you tried to fasten the paper with a scotch tape so the paper won't move inside of the holder? Since we are working under safety light it won't be a problem working this way. Cheers Joao Gregg Kemp wrote: I've loaded paper in 4x5 film holders, and found it tends to wrinkle up, because of its thickness. It can be done, but you may loose some paper trying to do it. Gregg -Original Message- From: Jeff Dilcher [mailto:r...@hiddenworld.net] Sent: Tuesday, December 18, 2001 10:39 AM To: pinhole-discussion@p at ??? Subject: RE: [pinhole-discussion] Will paper work in 4x5 film holder? I wonder if 4x5 enlarging paper will fit exactly in the sheet film holders? They should, but I haven't tried... -Jeff On Tue, 18 Dec 2001, Andy Schmitt wrote: Why not? As long as you cut it the right side put the emulsion facing out ( 80) ) it should be a very good method for holding it. andy ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/ ___ Pinhole-Discussion mailing list Pinhole-Discussion@p at ??? unsubscribe or change your account at http://www.???/discussion/
Re: [pinhole-discussion] developing ortho
Hi: When processing ortho film for pinhole the objective is usually to obtain a normal continuous tone negative. This means one must drastically reduce the contrast of ortho film to be useful for pinhole - although there is nothing stopping someone from making high contrast negatives on purpose. There doesn't appear to be a commerically made super low contrast developer to make continuous tone negatives from ortho film. One way to get a continuous tone neg from ortho film is to purposefully underdevelop the film - this limits contrast. This can be done by diluting the developer - Dektol, D76 almost any developer. The developer becomes exhausted before fully developing the negative limiting its contrast. Another way is to limit the activity of the developer by lowering its pH. This limits the activity of the developer as well, but it does not exhaust it. This usually provides a more evenly developed negative with better latitude, but it also dramatically decreases the films sensetivity. David Seomarko has formulated a good low pH developer called LC-1. The lines you talk about I think are what are referred to as Mackie lines. They are the result of the bromide released from hightlights during development restraining the development of adjacent areas. On Tue, Dec 18, 2001 at 01:24:53PM -0800, James Noel wrote: Date: Tue, 18 Dec 2001 13:24:53 -0800 From: James Noel jim.n...@gcccd.net Subject: [pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #562 - 13 msgs To: pinhole-discussion@p at ??? At 12:44 PM 12/18/01 -0500, you wrote: pinhole-discussion@p at ??? Using paper developer with Ortho Litho film. Since paper developers are more active and contrasty by their makeup, it makes more sense to use dilute film developer in order to obtain long scale negatives with this film. I believe the old wives tale about using dilute paper developer came from an article I read in a photography magazine in the late 1930's or early forties which promoted such development. For many years I have used dilute filme developers, D-76 at 1+ 6 to 1+8 is one example, or W2D2, a pyro developer, to produce beautiful long scaled enlarged negatives. Paper developers cause a harsh contrast line between dense adjacent areas of density which is very unacceptable to me. Jim
