Friday, October 29, 2010

Processing Black and White photos

1.)Materials necessary to process black and white film:
• Lighttight film-processing tank that accepts the size of
film you are planning to process
• Darkroom graduate or a 16-oz (473 mL) measuring cup
• Darkroom thermometer
• Several quart jars or bottles (glass, stainless steel, or
plastic) for the processing solutions
•To mix solutions you need a stirring paddle
• Soft viscose sponge
• Darkroom timer or a clock
• Scissors
• Bottle or magazine opener if you are processing film in
size135 magazines
• Protective gloves to prevent skin contact with chemicals
• Spring-type clothespins for hanging processed film to
dry
To make prints, you’ll need this equipment:
• Safelight, such as a KODAK Darkroom Lamp with a
KODAK OC Safelight Filter (light amber)
• Printing frame or enlarger
• 8 x 10-inch piece of heavy cardboard
• Four photographic processing trays a little larger than
the largest prints you plan to make (or shallow pans or
dishes made of glass, plastic, china, or stainless steel)
• Print squeegee or soft viscose sponge



2.)Chemicals


3.)Processing Your Proof Sheet
a.) Take the exposed paper from the printing frame or
enlarger easel and slide it completely into the developer,
emulsion side down. Then turn the paper over, and
agitate by rocking the tray gently throughout the
development time (1 minute for POLYCONTRAST IV
RC Paper in DEKTOL Developer). Tip up first one side,
then the adjacent side.
b.) Take the paper out of the developer and let it drain for
5 seconds. Then immerse it in the stop-bath solution for
at least 10 seconds, agitating thoroughly as in Step 1.
c.) Remove the paper from the stop bath, drain it for
2 seconds, and slip it into the fixer. Agitate frequently
for 2 minutes. You can turn on the room lights after
about 30 seconds. (If you have more than one print in
the tray, keep them separated.) Do not overfix.
d.) Transfer your print to the wash tray. Wash for 4 minutes
in gently running water at a temperature between 50 and
85°F (10 and 30°C). Avoid overwashing.
e.) Use a soft viscose sponge or a soft rubber squeegee to
remove excess water from the print surfaces. Dry the
print on a flat surface at room temperature with good air
circulation. You can speed drying by blowing warm air
from a portable hair dryer onto the print. Make sure that
the temperature of the air is below 190°F (88°C).


4.) Picture of of the equipment necessary to process film and chemicals


Definitions-
1. Contact sheet: A contact sheet is a positive print of all the negative images from one film, made by a contact printing process so that all the images are the same size as the negative.
2. Agitation: It is a process in which the air bubbles that usually occur when dry film is immersed in a solution can be removed without harmful effects in the predevelopment water rinse.
3. Enlarger: Is a specialized transparency projector used to produce photographic prints from film or glass negatives. All enlargers consist of a light source, normally an incandescent light bulb, a holder for the negative or transparency, and a specialized lens for projection
4. Developer: Is a chemical that makes the latent image on the film or print visible.
5. Stop Bath: An acidic bath that is used after the developer to stop development and reduce fixer contamination.
6. Fixer: A chemical solution used for the conversion of unused silver halides to a soluble silver so that the image remains stable and unalterable when exposed to light.

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