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I believe 120 is derived from an old Kodak numbering system intended to relate to the order the films were introduced and the number of exposures a camera could provide. However, it was pretty much messed up from the beginning since by the time 620 film came out, their camera would produce eight exposures, not six as the "6" in 620 was intended to mean. I never did learn what the other two digits meant. Be that as it may, 120 (and it's twice-as-long sister 220) is a medium format film, a moniker used to mean it lies between small format (35 mm or less) and large format (4" x 5" and up). It is sometimes referred to as 6 cm film, the dimension across. This dimensional number is also used when describing the format of the exposed frame (6x4.5, 6x6, 6x7 and a few others) as well as the camera. In fact, some cameras have the dimensions as part of their name (e.g. Mamiya 645). The 645 format, I believe, is the only one whose "landscape" dimension is oriented across the width, thus the film passes through the camera vertically. I say this because I don't consider the 6x6 format to have a landscape orientation because it is square. In the other formats, this dimension is oriented along the film's length. Thus a 6x7 camera can produce more exposures than a 6x9 from a 120 roll.
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What is a camera auto winder?
it is when you use 35 mm film it auto winds the film before pulling it out of the camera
Average Blood pressure for a teenager?
120/80 mmHg - it can vary but little 120-125/80-90
What does mm dealing with cameras mean such as a 300mm lens or 35mm film?
Millimeter if you're American, millimetre if you're not.
What is a normal blood pressure reading?
The normal blood pressure is usually between 120-140 mm Hg (systolic) and 80 - 90 mm Hg (diastolic). Anything higher will be considered as high blood pressure
When a x-ray photograph is taken why is it necessary to have the film in a light proof cassette?
Film is light sensitive so any exposure to the film will fog it. Most film comes either in a cassette, as in 35mm or roll-film which is protected by a paper leader and trailer. Professionals also use cut film which is hand loaded in the dark into film holders. Once a film is exposed in the camera it has what is called a latent image. It stays latent until processed. Once all the film is exposed it needs to be processed as soon as possible. Once the film is exposed its sensitivity makes it more susceptible to fogging and therefor must be protected from light. In the case of 35 mm and 120 roll film it shouldn't be much of a problem as the film is protected by the cassette or the backing paper. Once the film is taken out of its protection it has to be in total darkness. Colour film is sensitive to all colours and light. Monochrome film is what is called panchromatic. This means that although the film is mono it still records colours as grey tones so it must be handled in complete darkness. Black and white papers as used for monochrome prints are sensitive to only certain colours of the visible spectrum so can be viewed under dim yellow light. Blue light would fog the paper which is why in a black and white darkroom yellow filters are used for processing paper prints.
How many feet is 120 mm?
120 mm = 0.39 feet.120 mm = 0.39 feet.120 mm = 0.39 feet.120 mm = 0.39 feet.
Is 120 cm or 1200 mm bigger?
1 cm = 10 mm 120 cm = 1200 mm so 120 cm and 1200 mm is equal
What is 120 mm in m?
1000 mm = 1 m So 120 mm = .12 m
Does 120 mm equal 1.2 m?
No, 120 mm = .12 m
A 84 mm focal-length lens is used to focus an image on the film of a camera The maximum distance allowed between the lens and the film plane is 120 mm How far ahead of the film should the lens be if?
it should be 50 ft and 30 sec in front of u
How many inches is 120 MM?
4.7244" Direct Conversion Formula 120 mm* 1 in 25.4 mm = 4.724409449 in
How many centimmetres is 120 mm?
120 millimeters (mm) = 12 centimeters (cm)
18cm equals how many mm?
120 mm Algebraic Steps / Dimensional Analysis Formula 12 cm*10 mm 1 cm=120 mm
How many gallons are in the dementions 145 mm x 90 mm x 120 mm?
(145 mm) x (90 mm) x (120 mm) = 0.413693434 US gallons
How many mm is in 0.120 m?
There are 120 mm.
How much mm are in 12 cm?
120 mm
12 cms is how many mms?
120 mm 1 centimeter = 10 millimeters
