camera view - color transparency film
Arthur goldsmithmarch 1975 this is a digital version of an article from The Times Print Archive, before it starts online in 1996.
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Photographic film of various sizes and types
Quickly browse through all the colorful boxes on the shelves of any well stocked camera store to see this.
In order for the photographer to choose the photographer who best meets his or her needs, they must be familiar with some basic facts.
A movie that takes a static photo (
This is the scope of this discussion)
From small strips of 16mm film for ultra-small cameras to large sheets for 8x10 viewing angle cameras, all sizes have-
Each emulsion has a variety of different lotions, and the colors are black and white.
However, the various types of lotions do not necessarily have a variety of sizes, so it is clear that the choice of a particular photographer will be limited by the type that each size is suitable for a particular camera.
Here are the most common sizes at the moment.
There are two sizes-126 and 110 —
Both cameras are suitable for instant load cameras with "pocket size.
The main attraction of these films is the convenience of loading;
The cartridge is just popped in place without processing the film itself.
These two sizes provide 12 exposures per box.
35mm roil film.
The film has a row of piercings on each edge and celebrates its 50 th birthday on 1975.
The first commercially successful 35mm camera was a Leica camera invented by Oscar Banak, who used 35mm film films in his prototype model.
Nowadays, 35mm cameras occupy the advanced amateur and professional market, and there are quite a number of types and brands of the film.
It is usually sold in cylindrical cartridges exposed 20 or 36 times (
The "Halfframe" 35mm camera uses only half of the frames per shot, doubling the number of exposures).
For those of you who want to load their own cartridges, the 35mm film can also be used in bulk, making it cheaper than buying a pre-loaded cartridge.
Other movie ads.
This is provided on a wire shaft core with protective paper padding, with no perforated edges.
The sizes of various cameras include 127, 120/620, 116 and 616, but the most widely used size so far is 120/620, with 12 2-inch x-inch or 8 2-inch x-inch per roll
Depending on the type of camera that uses it. )
This is the film, which is cut into thin slices for viewing cameras, pressure cameras of certain models and other cameras with interchanged backs.
It is supplied in boxes packed with individual sheets and film.
Available in a variety of sizes, the most popular are 4x5, 5x7 and 8x10 inch.
Although most photos of home snapshots, and now very advanced amateur and professional photography, are colored, there is renewed interest in black and white, especially those students and serious workers who like to handle and work in the dark room themselves.
Some themes tend to color themselves more naturally;
Others are black and white.
The color is more authentic, but a greater degree of abstraction inherent in black and white attracts many workers.
Photos in documentary tradition and those that emphasize the quality of formal graphics often look more satisfying in black and white photos.
It is relatively easy to achieve technical success with color, but it is very difficult to develop a unique personal style in the medium.
So even in our current color culture, black and white photography is far from dead --
Over the past year, we have witnessed most of the photographic exhibitions held in New York.
For photographers who choose Color Shooting, color negatives or transparent films are basically available.
As the name shows, the color negative produces a color with a negative color, and the tone is reversed.
Do from this one (or has made)color prints.
Color transparency (or reversal)
The film produces a positive image that can be viewed or projected directly.
The most familiar example is the color "slide" of the 22-inch card board installation ".
For most casual snapshooters, color negatives (
Such as kodacolor-x, rattan, cherry or Agfacolor)
Is a satisfactory choice.
They would like to have color prints installed on the album or send them to friends and family. (
Color slides can also be copied from color negative materials. )
Photographers who want to make their own color prints can also choose color negatives and combine one of the existing color printing processes.
If the photographer wants to show the slides, it is clear that the transparent film is chosen.
These include Kodak Film Month and 64, Ektachrome-X, High-Speed color counter-films, Fujichrome, GAF color slides, Agfachrome.
People can also make high-quality color prints with transparent film, or they can make color prints directly from slides.
Color balance is another factor to consider when choosing color transparent film.
Daylight type films are designed to provide normal color reproduction during day, electronic flash or blue flash and cube exposure.
Class A movies are balanced in light lighting, and tungsten movies are balanced in studio lighting.
The advertising films film for indoor artificial lighting has a very warm effect;
Tungsten or A-type films used during the day produce excessive blue color.
Unless you want this calor shift, use the transparent film only when balancing the lighting type, or add the appropriate "conversion" filter as recommended by the film manufacturer. (
When you do this, you lose the speed of the movie, especially when converting daylight into indoor use, so the latter should only be considered as an emergency measure. )
As for the "color quality" of any color film, it is a very subjective and controversial area depending on the processing, viewing conditions and the individual taste of the audience.
For some, the original blue sky in Rome was so blue (
Celebrate 30 th birthday this year)
It looks artificial, but when the later Koda Roma replaced the earlier lotion, many people regretted the loss of "Koda Roman Blue.
Some photographers like the quality of certain Agfa color materials and think it is "more natural" than other color films, but others find the quality dull and unsaturated.
Ektach Rome is often a "warm" film that favors yellow and red, which may or may not be desirable, depending on the subject and eyes of the audience.
Film speed is another important feature that applies both in color and in black and white.
The "speed" of the film is a measure of its sensitivity to light, expressed by the ASA film speed index determined by the standard test procedure.
The higher the number of ASA, the faster the speed (
Sensitive to light)the film is.
For black and white films, the range is from ASA 32 of Panatomic X to ASA 400 of trix or Ilford hp4. (
Black and white films are typically rated higher than their "official" ASA numbers, according to developers and other factors. )
When choosing a color or black and white movie, the traditional rule is still reasonable: choose as many speeds as you need, but no longer choose.
The reason is that the increase in granularity and contrast tends to hand in hand as the speed increases.
For example, GAF 500 is much rougher than its ASA 64 sister movie.
Finally, the best movies are usually the most familiar ones for photographers.
Instead of jumping to a different emulsion frequently, it's better to live with it for a while before you thoroughly understand its behavior.
■ A version of this file was printed on page X40 of The New York edition on March 9, 1975 with the title: camera view.