Color Negative Film Color Correction
Introduction
The conversion from negative to positive is different for each make/model of color negative film.
Negative film-A reversed (negative) image is created when this type of film is used. Black and white and color negative films are called negative films. The negative image is reserved. Whites are black and blacks are white.
Negative Film Color or black-and-white that represents the scene in reversed tones. When reproduced with reversal processing on negative-type photographic paper, the image appears in the same tones as the actual scene.
Color Negative Film
Color negative film is very tolerant of exposure errors. You can be off by 2 or 3 f-stops and still get a print that is barely distinguishable from one from a correctly exposed negative.
[edit] Negative film
Due to happenstance, many photographic processes create negative images: the chemicals involved react when exposed to light, ...
Colour Negative Film
Colour negative film is available in speeds from 100ASA to 1600ASA. It has a very much greater latitude than either black & white negative or colour reveral film, about 5 stops.
Color Negative Film Processing.-
Films such as Agfacolor, Kodacolor, Vericolor, and Fujicolor are negative films that can be processed by the relatively simple C- 41 process.
Negative film gains its increased dynamic range by virtue of its low contrast. When you increase the contrast of images to return them to a normal range of contrast, noise becomes more pronounced.
Color negative film has a narrower range but still quite good, especially if you factor in darkroom technique (does anyone have a color darkroom anymore)? Reversal film, on the other hand, is another story.
I used negative films sparingly in the past because I seldom got clean negatives back from the lab. For some reason C41 (print film process) always leaves many small spots and scratches on my film no matter what lab I take it to.
Cut film - negative film available in flat sheets. The most common sizes are 4x5, and 8x10 inches.
Cyan - blue-green subtractive primary color which absorbs red and transmits blue-green.
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Color Negative Film
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The ultimate tool for determining proper exposure Correct exposure is critical, maybe even more so for digital capture than film, especially color negative film.
This is the standard process for all colour negative films and is available almost anywhere.
Reversal/transparency film requires the E-6 process.
There are two types of film - negative film and transparency film. The color palettes vary intentionally between the different manufacturers. The principal manufacturers of color film are Agfa, Fuji, and Kodak.
Faster ISO Negative films, even ISO 400 and 800 have improved dramatically that it is now possible to make large prints that required slower films only a few years ago. The fastest slide film I use is Fujichrome Provia 100.
Standard black-and-white negative films are best for darkroom enthusiasts who process negatives and then print via a conventional enlarger in a home or commercial darkroom.
By contrast, many photographers who shot with negative film were used to an extended creative process that might involve hours in the darkroom working to finish the image that they started in the camera.
Cross-processing is developing color print or slide film in the wrong chemicals - for example, color negative film in slide chemicals ("C-41 as E-6″) or slide film by the color negative process ("E-6 as C-41″).
All media, from black and white negative film, to colour print and transparency, and ultimately digital can only record a certain number of stops of overall tonality.
Our 200 ppi resolution rule of thumb was based on comparisons between digital prints produced by the best inkjet and dye-sublimation printers available at the time and prints from color-negative film made at a top minilab.
Negative films having an ISO of 400 are often shot to compensate for the limited range of camera adjustments. The faster films provide a greater tolerance for exposures that are less than perfect (a likely situation with the Diana).
Slide film has less exposure latitude, that is it can only register a range of about 5 stops of light from white to black, while print film (negative film) can register about 7 stops.
In the camera, too much light causes overexposure-this makes negative film look too dark and reversal film look too light. Underexposure (too little light) has the reverse effect.
With transparency film the limitation was about 3 or 4 "stops" of light, while with negative film it could go on out to 5 or 6 stops. Today's digital sensors seem to be able to record about 5 or so usable stops of light.
Slow, saturated, contrasty slide film gives a completely different feel to a picture than fast, grainy, high-latitude color negative film.
In 1885 they could present a new improved paper negative film which was called the "American Film", or "stripping film". The light sensitive layer of that film was made of gelatine.
Matchprint: A Matchprint is a printers Contract Proof made from the same halftone negative film that will be used to burn the actual offset printing plates.
That proactive step resulted in the company introducing its first film product and a motion picture negative film during 1936.
SuperCCD SR designed to replicate negative film by having two photodiodes of different sensitivity
Primary photodiode has high sensitivity but a relatively narrow dynamic range, captures dark and medium tones ...
Edwin's Response: For developing and printing of negative films, the quality of the printer is very important and from location to location of even a chain that should have standardized procedures, variations can result in very different results.
Also, remember that paper negatives are not as sensitive as "normal" negative film. There will be a different look to your paper negative prints than "normal" prints.
Luckily, we had a slow color negative film in our backpacks to guarantee high color saturation coupled with super-fine grain. This combination really spoils photographers with its incomparable detail resolution.
If you were shooting negative film, you had a bit of latitude enlarging the negative, but there were limitations. Slide shooters could make a cropped dupe, but the results were marginal at best.
This discussion will center on black-and-white, negative films. Most of the information is applicable to other films, with some variations.
Physical Characteristics
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Dye
image monochrome films black & white negative films designed for colour processing.
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In the old days of film, the rule of thumb was that, if you were using negative film, a whole f-stop between exposures would be OK. If you were using slide film 1/2 stop or 1/3 stop increments would be better.
C41
The number given to a Chemical process for developing colour negative film. (created by Kodak but adopted universally by every other manufacturer).
Most negative films (regardless of brand name) have an exposure latitude of five to seven stops, whereas most transparency (slide) films have less exposure latitude -- in the range of three to five ƒ-stops.
It forces you to learn about exposure. Negative film is much too forgiving of your mistakes and masks way too many problems. Learning about exposure enables you to be in control of what your results will look like.
A unit used to record digital images onto transparency or negative film.
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Film Status Indicator ...
Underexposure
A condition in which too little light reaches the film or camera sensor. In general digital handles underexposure better than negative film. Underexposed film will producing a thin negative, a dark slide, or a muddy-looking print.
Exposure Latitude
The range, above or below optimum exposure, within which a given film can reproduce acceptable results. Negative films have the widest latitude for decent exposure.
ISO - is derived from the world of film cameras and was the International Standards Organisation's definition of the speed - or sensitivity - of colour negative film.
On the other hand, photographers that shoot black and white negative film have a very wide dynamic range and can make extensive adjustments to the image in the dark room.
This when you develop a film in chemicals meant for different type of film. The most common technique is developing slide film in the more commonly available chemicals used for regular color negative film.
slide film, and is exposed directly in the camera and processing through a direct positive process to give positive color images that are directly viewable on a slide projector. It offers superior color saturation and tonal range than negative films.
 See also: Negative, Film, Photograph, Image, Photography
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