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alaios
Joined: 24 Jan 2014 Posts: 724
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Posted: Fri Sep 05, 2014 11:49 pm Post subject: What is black and white reversal process? |
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alaios wrote:
Hi,
I had a a look on the wikipedia about the black and white reversal process? It seems that these are not my Ilford HP5 type of films but some negatives that print negative colors directly on the film or something.
Can you perhaps give me some simple example for that?
Regards
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PWhite214
Joined: 19 Apr 2014 Posts: 230 Location: Houston, Texas
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philslizzy
Joined: 07 Aug 2012 Posts: 4747 Location: Cheshire, England
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Posted: Mon Sep 08, 2014 12:04 am Post subject: |
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philslizzy wrote:
ALEX DON'T GO THERE!
edit: reversal film is slide film. B&W reversal film is exactly that - black and white slides, colour reversal is colour slide film. You could reverse process B&W neg films... see the rest of my post. End of edit
I have tried it and its messy, expensive and uses hard to get (nowadays) chemicals and with unpredictable and usually crap results. You can't buy films of this type any more you need too process slow speed films to reverse them. I have developed countless b&w and colour films and made thousands of darkroom prints on paper, glass, metal, film and cloth. But I would balk at doing b&W reversal again. And don't think that you can push process HP5 and reverse it too.
To be honest, B&W reversal films were for people who wanted high quality b&w slides. Why do you want b&W slides? Digitise them and you may as well digitise from a negative.
Have you developed your first film yet?
edit 2: If developing a film is like making a cup of tea, then reverse processing is like making a pan galactic gargleblaster (http://hitchhikers.wikia.com/wiki/Pan_Galactic_Gargle_Blaster) _________________ Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official. |
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Excalibur
Joined: 19 Jul 2009 Posts: 5019 Location: UK
Expire: 2014-04-21
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Posted: Mon Sep 08, 2014 7:26 am Post subject: |
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Excalibur wrote:
philslizzy wrote: |
ALEX DON'T GO THERE!
edit: reversal film is slide film. B&W reversal film is exactly that - black and white slides, colour reversal is colour slide film. You could reverse process B&W neg films... see the rest of my post. End of edit
I have tried it and its messy, expensive and uses hard to get (nowadays) chemicals and with unpredictable and usually crap results. You can't buy films of this type any more you need too process slow speed films to reverse them. I have developed countless b&w and colour films and made thousands of darkroom prints on paper, glass, metal, film and cloth. But I would balk at doing b&W reversal again. And don't think that you can push process HP5 and reverse it too.
To be honest, B&W reversal films were for people who wanted high quality b&w slides. Why do you want b&W slides? Digitise them and you may as well digitise from a negative.
Have you developed your first film yet?
edit 2: If developing a film is like making a cup of tea, then reverse processing is like making a pan galactic gargleblaster
(http://hitchhikers.wikia.com/wiki/Pan_Galactic_Gargle_Blaster) |
What happened to this film ?
http://www.amateurphotographer.co.uk/forums/showthread.php?28733-Kodak-invent-worlds-Fastest-film! _________________ Canon A1, AV1, T70 & T90, EOS 300 and EOS300v, Chinon CE and CP-7M. Contax 139, Fuji STX-2, Konica Autoreflex TC, FS-1, FT-1, Minolta X-700, X-300, XD-11, SRT101b, Nikon EM, FM, F4, F90X, Olympus OM2, Pentax S3, Spotmatic, Pentax ME super, Praktica TL 5B, & BC1, , Ricoh KR10super, Yashica T5D, Bronica Etrs, Mamiya RB67 pro AND drum roll:- a Sony Nex 3
.........past gear Tele Rolleiflex and Rollei SL66.
Many lenses from good to excellent. |
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philslizzy
Joined: 07 Aug 2012 Posts: 4747 Location: Cheshire, England
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Posted: Mon Sep 08, 2014 3:55 pm Post subject: |
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philslizzy wrote:
what happened to Kodak? They made the first digital camera, perfected the sensor and licensed it out to everyone. Suicide. _________________ Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official.
Last edited by philslizzy on Sat Nov 08, 2014 8:40 am; edited 1 time in total |
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trev
Joined: 30 Jun 2010 Posts: 580 Location: North Wales - UK
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Posted: Mon Sep 08, 2014 4:42 pm Post subject: |
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trev wrote:
Didnt AGFA have a reversal B+W film? _________________ Fuji X10, X-A1 and Samsung nx 20 |
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kansalliskala
Joined: 19 Jul 2007 Posts: 5027 Location: Southern Finland countryside
Expire: 2016-12-30
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Posted: Mon Sep 08, 2014 7:30 pm Post subject: |
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kansalliskala wrote:
how did they make b&w movies?
was it reversed during the master-copy -phase?
but how did they cut the films? _________________ MF: Kodak DCS SLR/c; Samsung NX10; OM-10; Canon T50
Zuiko 28/3.5, Distagon 35/2.8; Yashica ML 50/2;
Zuiko 50/1.4; S-M-C 120/2.8; Zuiko 135/3.5; 200/5;
Tamron AD1 135/2.8, Soligor 180/3.5; Tamron AD1 300/5.6
Tamron zooms: 01A, Z-210
Yashicaflex C; Київ 4 + Юпитер 8, 11; Polaroid 100; Olympus XA; Yashica T3
Museum stuff: Certo-Phot; Tele-Edixon 135; Polaris 90-190; Asahi Bellows; Ixus IIs
Projects: Agfa Isolette III (no shutter), Canon AE-1D (no sensor),
Nikon D80 (dead), The "Peace Camera"
AF: Canon, Tokina, Sigma Video: JVC GZ-MG275E |
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kansalliskala
Joined: 19 Jul 2007 Posts: 5027 Location: Southern Finland countryside
Expire: 2016-12-30
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Posted: Mon Sep 08, 2014 7:31 pm Post subject: |
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kansalliskala wrote:
philslizzy wrote: |
what happened to Kodak? They made the first digital camera, perfected the sensor and licensed it out to everyone. Suicide. |
Kodak actually made a b&w digital camera too, years before Leica
http://www.luminous-landscape.com/reviews/cameras/kodak-760m.shtml _________________ MF: Kodak DCS SLR/c; Samsung NX10; OM-10; Canon T50
Zuiko 28/3.5, Distagon 35/2.8; Yashica ML 50/2;
Zuiko 50/1.4; S-M-C 120/2.8; Zuiko 135/3.5; 200/5;
Tamron AD1 135/2.8, Soligor 180/3.5; Tamron AD1 300/5.6
Tamron zooms: 01A, Z-210
Yashicaflex C; Київ 4 + Юпитер 8, 11; Polaroid 100; Olympus XA; Yashica T3
Museum stuff: Certo-Phot; Tele-Edixon 135; Polaris 90-190; Asahi Bellows; Ixus IIs
Projects: Agfa Isolette III (no shutter), Canon AE-1D (no sensor),
Nikon D80 (dead), The "Peace Camera"
AF: Canon, Tokina, Sigma Video: JVC GZ-MG275E |
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philslizzy
Joined: 07 Aug 2012 Posts: 4747 Location: Cheshire, England
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Posted: Mon Sep 08, 2014 10:55 pm Post subject: |
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philslizzy wrote:
trev wrote: |
Didnt AGFA have a reversal B+W film? |
this, 32ASA probably too slow for Alex
kansalliskala wrote: |
how did they make b&w movies?
was it reversed during the master-copy -phase?
but how did they cut the films? |
The pro's used neg film, B&W like colour, was shot on negative film then positive prints made for distribution.
Yes there was B&W reversal film for amateurs.
How did they cut (edit)?
A working copy (print) was made from the original negatives and edited. When the final edit was decided upon, a duplicate negative was made with (special for that purpose) reversal film and cut and edited to match the working copy, prints were then made from the edited negative. The original negs went into storage. These are what the director works from when he edits his own 'cut'. _________________ Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official. |
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Eugen Mezei
Joined: 17 May 2008 Posts: 265
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Posted: Sat Nov 08, 2014 3:00 am Post subject: |
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Eugen Mezei wrote:
philslizzy wrote: |
Why do you want b&W slides? Digitise them and you may as well digitise from a negative.
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Shure, and a beamer is the same as a projected slide. Ofcourse..... |
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philslizzy
Joined: 07 Aug 2012 Posts: 4747 Location: Cheshire, England
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Posted: Sat Nov 08, 2014 8:46 am Post subject: |
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philslizzy wrote:
If you know the OP I think you would not make such a facetious comment. But then again, you probably would. It apears to be your style _________________ Hero in the 'messin-with-cameras-for-the-hell-of-it department'. Official. |
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-rageQuit-
Joined: 26 Dec 2013 Posts: 22
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Posted: Sat Nov 08, 2014 4:32 pm Post subject: |
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-rageQuit- wrote:
philslizzy wrote: |
trev wrote: |
Didnt AGFA have a reversal B+W film? |
this, 32ASA probably too slow for Alex |
I can see one website that has Agfa Scala 200X (ie. 200ASA) in stock. They also have Fomapan R 100ASA. Foma might also provide their own branded chemicals, but I'm not entirely sure. |
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