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#1
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Acufine Acu-1 substitute
Hello, because it is quite difficult to find Acu-1 developer, is there
a subsitute with analogue characteristics? Microdol for example? I would like to use it with MACO IR film, to obtain less grain than the one I have normally with HC-110. Thanks. |
#2
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Acufine Acu-1 substitute
"piterengel" wrote in message ... Hello, because it is quite difficult to find Acu-1 developer, is there a subsitute with analogue characteristics? Microdol for example? I would like to use it with MACO IR film, to obtain less grain than the one I have normally with HC-110. Thanks. I don't know what is in Acufine. Microdol-X and Ilford Perceptol are identical. They use common salt as the fine grain agent in a low activity Metol developer. Both yield finer grain than standard developers when used full strength at the cost of about a stop of speed. I have started to use Perceptol as my standard for 35mm 100T-Max, the grain being comparable to the late, lamented, Kodak Technical Pan in Technidol. I have no idea of how well it would work for the Maco film but its worth a try. I doubt if any practical developer will give you finer grain. When diluted the extra-fine-grain property is lost. At 1:3 either developer will deliver full film speed and about the same grain as D-76 but with significant acutance effects. -- --- Richard Knoppow Los Angeles, CA, USA |
#3
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Acufine Acu-1 substitute
piterengel wrote:
Hello, because it is quite difficult to find Acu-1 developer, is there a subsitute with analogue characteristics? Microdol for example? I would like to use it with MACO IR film, to obtain less grain than the one I have normally with HC-110. Thanks. _____ In an old booklet by ZONE V Inc. on page 25 is an Acufine substitute: Water at 125F 2-1/2 cups 500 ml Sodium sulphite 2 TBSP + 1 tsp 53 g Hydroquinone 1-1/2 tsp 4.5 g Sodium carbonate 1/4 tsp + 1/8 tsp 2.3 g Borax 1/2 tsp 2.5 g Potassium bromide 1/8 tsp 10 ml of a 10 wt% solution Phenidone 1/8 tsp 0.25 g or 125 ml concentrate Water to make 1 liter Below the formula it says: "Phenidone in this formula gives a boost to shadow detail. Development time for roll film at 68F is 2-1/4 to 5-1/4 minutes." The phenidone concentrate: Water at 125F 3 cups Sodium bisulphite 1 tsp Phenidone 1 tsp Water to make 1 liter 125 ml or 4 oz contain 0.25 g or 1/8 tsp of phenidone The sodium sulphite is necessary to help the phenidone dissolve properly. I don't like using tsp and TBSP volume measures. As well, i have provided the mass equivalents of the various component's tsp and TBSP volumes. The conversions to grams were given in the ZONE V booklet. I have used this formula on 35 mm film with good results. I am not familiar with MACO IR film. The Acufine substitute formula is worth a try. Let us know how it works. -- Regards / JCH |
#4
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Acufine Acu-1 substitute
jch wrote:
piterengel wrote: Hello, because it is quite difficult to find Acu-1 developer, is there a substitute with analogue characteristics? Microdol for example? I would like to use it with MACO IR film, to obtain less grain than the one I have normally with HC-110. Thanks. _____ In an old booklet by ZONE V Inc. on page 25 is an Acufine substitute: Since there is no copyright mentioned in the ZONE V Inc. booklet i have scanned it, and converted it to LaTeX. I compiled it to PostScript and PDF files. There are some very useful formulas and advice in the booklet. I suppose that this small document came with a kit full of photographic chemicals at one time. You will find these two files at http://24.108.145.235/photography/ There is also an HTML version at http://24.108.145.235/photography/zone_v/index.html The web server will remain on-line for about one month. -- Regards / JCH |
#5
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Acufine Acu-1 substitute
"jch" wrote in message
news:r3ONj.67074$Cj7.21613@pd7urf2no... Since there is no copyright mentioned in the ZONE V Inc. booklet Is it THAT old? Must be 'cause it's before Zone VI. Anywho, somebody's going to suggest that maybe it doesn't need a copyright statement to be copywrighted. Me, I'll just take your site down. Right now. But I'll let it go Real Soon Now. |
#6
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Acufine Acu-1 substitute
"jch" wrote in message news:r3ONj.67074$Cj7.21613@pd7urf2no... Since there is no copyright mentioned in the ZONE V Inc. booklet [...] you will find these two files at http://24.108.145.235/photography/ You are rather optimisitc thinking you will have the same ip address via cable and be up all the time. Now let's check that copyright situation. |
#7
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Acufine Acu-1 substitute
jjs wrote:
"jch" wrote in message news:r3ONj.67074$Cj7.21613@pd7urf2no... Since there is no copyright mentioned in the ZONE V Inc. booklet [...] you will find these two files at http://24.108.145.235/photography/ You are rather optimistic thinking you will have the same ip address via cable and be up all the time. _____ Always an optimist, me! IP address not a problem. Now let's check that copyright situation. _____ Sure. Let me know what you find out. The Zone V, Inc. material is pretty much public domain knowledge. Have a look at the old PHOTO LAB INDEX by E.M. Pittaro, published by Morgan & Morgan, Inc. Many of the same developer formulas are found in that book as well. I performed a search on the net, but could not turn up anything about Zone V, Inc. Also, i asked this group some time ago if someone could determine where to find the Dignan Family in California. I wanted to post a scanned PDF copy of the Dignan Black-and-White formula book and the Colour Formula Book if i could get permission. No one ever came forward. Perhaps Richard Knoppow could help? He lives in California. I only did some test scans to see what the final file size would be. Rather large i am afraid to say. I never did complete the scanning of the formula book. -- Regards / JCH |
#8
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Acufine Acu-1 substitute
"jch" wrote in message news:MI5Oj.202118$pM4.10074@pd7urf1no... jjs wrote: Now let's check that copyright situation. _____ Sure. Let me know what you find out. The Zone V, Inc. material is pretty much public domain knowledge. Have a look at the old PHOTO LAB INDEX by E.M. Pittaro, published by Morgan & Morgan, Inc. Many of the same developer formulas are found in that book as well. I performed a search on the net, but could not turn up anything about Zone V, Inc. I am not sure that copyright is strictly concerned with individual formulas in the book. But I admit I am no expert. Also, i asked this group some time ago if someone could determine where to find the Dignan Family in California. I wanted to post a scanned PDF copy of the Dignan Black-and-White formula book and the Colour Formula Book if i could get permission. No one ever came forward. Gosh, well I hope you don't come across my work and think that polling usenet is the way to try and contact me and then decide that if nobody knows me, then the material is free to copy. Take Care, jjs |
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