Christaoffer100
Aktiv medlem
Är det någon som vet om det fortfarande finns någon labb som kan framkalla en Kodachrome 64?
Kodachrome 64
- Trådstartare Christaoffer100
- Start datum
Bessel
Aktiv medlem
Ventures
Aktiv medlem
Någon som jobbade på Kodak i Järfälla när det begav sig kanske kan tipsa om processen?
Testa googla på detta: how to develop kodachrome
Det gav rätt många träffar.
Här är en beskrivning av processen:
It is...........
Backing removal
An alkaline bath softens the cellulose acetate phthalate binder. A spray wash and buffer removes the rem-jet antihalation backing.
First Developer
All exposed silver halide crystals are developed to metallic silver via a PQ developer. The yellow filter layer becomes opaque because it has a combination of Lippmann emulsion (very tiny grains) and Cary Lea silver (metallic silver particles that are small enough that they are yellow rather than gray.)
Wash
Red light re-exposure through the base
This makes the remaining undeveloped silver halide in the cyan layers developable.
Cyan developer
The solution contains a color developer and a cyan coupler. These are colorless in solution. After the color developer develops the silver, the oxidized developer reacts with the cyan coupler to form cyan dye. The dye is much less soluble than either the developer or the coupler so it stays in the red layer of the film.
Wash
Blue light re-exposure from the top
This makes the remaining undeveloped grains in the blue sensitive layer (the yellow layer) developable. The now opaque yellow filter layers prevents the blue light from exposing the magenta layer (the green sensitive layer, which is also sensitive to blue light). It is important to avoid stray printing light exposing the film base of film.
Yellow developer
Analogous to the cyan developer.
Wash
Magenta developer
This contains a chemical fogging agent that makes all of the remaining undeveloped silver developable. If everything has worked right, nearly all of this silver is in the magenta layers. The developer and magenta coupler work just like the cyan and yellow developers to produce magenta dye that is insoluble and stays in the film.
Wash
Conditioner
Prepares the metallic silver for the bleach step.
Bleach
(Iron EDTA) Oxidises the metallic silver to silver halide. The bleach must be aerated. The former ferricyanide bleach did not require aeration and did not require a conditioner.
Fix
Converts the silver halide to soluble compounds which are then dissolved and washed from the film
Wash
Washes the fixer out of the film.
Rinse
Contains a wetting agent to reduce water spots.
Dry
The result is three different color records each with the appropriate dye, just like other color films. The original Kodachrome process in 1935 used dye bleaches and was a far more complicated process. Although the formulae have changed over the years, the basic process steps have followed a similar pattern since the introduction of "selective re-exposure" Kodachrome in 1938.
Testa googla på detta: how to develop kodachrome
Det gav rätt många träffar.
Här är en beskrivning av processen:
It is...........
Backing removal
An alkaline bath softens the cellulose acetate phthalate binder. A spray wash and buffer removes the rem-jet antihalation backing.
First Developer
All exposed silver halide crystals are developed to metallic silver via a PQ developer. The yellow filter layer becomes opaque because it has a combination of Lippmann emulsion (very tiny grains) and Cary Lea silver (metallic silver particles that are small enough that they are yellow rather than gray.)
Wash
Red light re-exposure through the base
This makes the remaining undeveloped silver halide in the cyan layers developable.
Cyan developer
The solution contains a color developer and a cyan coupler. These are colorless in solution. After the color developer develops the silver, the oxidized developer reacts with the cyan coupler to form cyan dye. The dye is much less soluble than either the developer or the coupler so it stays in the red layer of the film.
Wash
Blue light re-exposure from the top
This makes the remaining undeveloped grains in the blue sensitive layer (the yellow layer) developable. The now opaque yellow filter layers prevents the blue light from exposing the magenta layer (the green sensitive layer, which is also sensitive to blue light). It is important to avoid stray printing light exposing the film base of film.
Yellow developer
Analogous to the cyan developer.
Wash
Magenta developer
This contains a chemical fogging agent that makes all of the remaining undeveloped silver developable. If everything has worked right, nearly all of this silver is in the magenta layers. The developer and magenta coupler work just like the cyan and yellow developers to produce magenta dye that is insoluble and stays in the film.
Wash
Conditioner
Prepares the metallic silver for the bleach step.
Bleach
(Iron EDTA) Oxidises the metallic silver to silver halide. The bleach must be aerated. The former ferricyanide bleach did not require aeration and did not require a conditioner.
Fix
Converts the silver halide to soluble compounds which are then dissolved and washed from the film
Wash
Washes the fixer out of the film.
Rinse
Contains a wetting agent to reduce water spots.
Dry
The result is three different color records each with the appropriate dye, just like other color films. The original Kodachrome process in 1935 used dye bleaches and was a far more complicated process. Although the formulae have changed over the years, the basic process steps have followed a similar pattern since the introduction of "selective re-exposure" Kodachrome in 1938.
Leica-M-gubben
Aktiv medlem
Har frys full me Kodachrome så jag rotade i detta för ca. ett år sedan då det framkom att INGEN firma eller privatperson åtar sig att framkalla längre.
Om man får tag i recept och kemikalier samt processdata, kan man göra ett försök, lyckas man kan man ju lansera sig ww å tjäna en slant. Antar att folk som kan det här redan gett upp.
Någon har visat en sv-v eller snarare blå-vit process där emulsionen i våtprocessen måste avlägsnas. Resultatet ser inge vidare ut.
Så, tyvärr, tycks det vara kört, dock är hoppet det sista som lämnar en dåre.
Om man får tag i recept och kemikalier samt processdata, kan man göra ett försök, lyckas man kan man ju lansera sig ww å tjäna en slant. Antar att folk som kan det här redan gett upp.
Någon har visat en sv-v eller snarare blå-vit process där emulsionen i våtprocessen måste avlägsnas. Resultatet ser inge vidare ut.
Så, tyvärr, tycks det vara kört, dock är hoppet det sista som lämnar en dåre.
atotowi
Aktiv medlem
Det verkar ju finnas en och annan som inte gett upp hoppet:
http://www.kodachromeproject.com/forum/showthread.php?t=674&page=26
http://www.kodachromeproject.com/forum/showthread.php?t=674&page=26
Christaoffer100
Aktiv medlem
Tyvärr så ser det kört ut...trist. Hade fortfarande lite hopp kvar.
Jag har 10st rullar kvar i kylen som jag kommer att behålla för sakens skull
Jag har 10st rullar kvar i kylen som jag kommer att behålla för sakens skull
