0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Is faster film more sensitive to light?
yes
Why does red light not affect film development?
Photographic film is by it's very definition sensitive to light. Different types of film is sensitive to different colour spectrum The first types of film had a very limited sensitivity to colours and only reacted to blue light. As technology progressed film was made sensitive to a wider spectrum of light.Orthochromatic film was (is) sensitive to colours from blue to green, thus not sensitive to red light hence not affected by a "red light" during development.This film type was, however, superseded by "Panchromatic" film that is sensitive to all light spectrum, including red light. This means that most (modern) film cannot be developed using a red darkroom light without permanently destroying the film.Copying images (to paper or plastic sheets) is a different matter as the light sensitive emulsion on copy-paper is notsensitive to red light which is why a red light can safely be used during copying and development of the copies.
What does it mean when film for photographs are 200 or 400 or 800?
The numbers refer to film speed or ISO; witch is another way of saying sensitivity. Each of the standard ISOs (listed bellow) is twice as sensitive as the one before it. The higher the number is the more sensitive the film. While a higher sensitivity film will allow you to shoot in lower light conditions it increases the appearance of grain. Not sensitive
Is it true that film is coated with a light-sensitive emulsion?
Yes
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.
What is xray film emulsions sensitive to?
X Ray film emulsions are sensitive to light.
What colors is panchromatic film sensitive to?
Panchromatic film is sensitive to all visible light wavelengths, spanning from ultraviolet to infrared. This sensitivity allows panchromatic film to reproduce a wider range of colors compared to orthochromatic film, which is sensitive to only blue and green light.
What is an image produced on a light-sensitive film?
latent
Is faster film more sensitive to light?
yes
Why does red light not affect film development?
Photographic film is by it's very definition sensitive to light. Different types of film is sensitive to different colour spectrum The first types of film had a very limited sensitivity to colours and only reacted to blue light. As technology progressed film was made sensitive to a wider spectrum of light.Orthochromatic film was (is) sensitive to colours from blue to green, thus not sensitive to red light hence not affected by a "red light" during development.This film type was, however, superseded by "Panchromatic" film that is sensitive to all light spectrum, including red light. This means that most (modern) film cannot be developed using a red darkroom light without permanently destroying the film.Copying images (to paper or plastic sheets) is a different matter as the light sensitive emulsion on copy-paper is notsensitive to red light which is why a red light can safely be used during copying and development of the copies.
What does it mean when film for photographs are 200 or 400 or 800?
The numbers refer to film speed or ISO; witch is another way of saying sensitivity. Each of the standard ISOs (listed bellow) is twice as sensitive as the one before it. The higher the number is the more sensitive the film. While a higher sensitivity film will allow you to shoot in lower light conditions it increases the appearance of grain. Not sensitive
Is it true that film is coated with a light-sensitive emulsion?
Yes
What part of the shoot is sensitive to light?
The sensor or film inside the camera is sensitive to light. It captures the incoming light to create an image.
Which filmspeeds are the most sensitive to light?
The higher the film speed, the more sensitive it is to light. Some films with very low film speeds (below ISO 25) might be able to be handled in ambient light!
How does film record its images?
There is a coating on the film that is sensitive to light. When the camera button is pressed, the shutter opens, allowing light from the subject to fall on the film's surface. this creates the image.
What is used to make photographic film?
Photographic film was invented in 1889 by George Eastman. Photographic film and paper is made using silver nitrate which is light sensitive.
Why would a camera and film company need so much silver?
Silver salts (halides) are the ingredient of film that makes it light-sensitive.
