What is the best way of describing Increasing or decreasing ISO settings in a digital camera in terms of a film camera?
Buying film for a film camera that has different sensitivity to light.
or
Buying film for a film camera that has white balance compensation built-in.
I don't know much about film cameras and am trying to learn. Thanks!
Best answer:
Answer by AWriterWandering
The term ISO, in photography, refers to the sensitivity to light. Historically it was called ASA.
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ISO refers to the film or digital sensor sensitivity to light. The higher the ISO, the higher the sensitivity. A higher ISO allows you to use faster shutter speeds in lower light conditions. The trade off is that higher ISOs result in noise in the photo. This occurs in film because higher ISO films have physically larger grain sizes in their chemicals. It happens in digital sensors because higher sensitivity to light also increases sensitivity to leaky currents and heat. The biggest difference between film and digital is that once you put a roll of film in a camera you were stuck with that specific ISO until the film was done. With digital you can switch from shot to shot.
ReplyDeleteWhen using film, you must buy a roll of film with both the ISO and white balance you need and use it for the whole roll, 24 or 36 exposures.
ReplyDeleteFilm cameras do NOT have white balance built-in. That is the benefit of digital cameras. The ISO and white balance can be changed on every shot if necessary, but each roll of film is either balanced for daylight or tungsten light at a given ISO. If you want or need to change either when shooting film, you must either carry a second body with a second type film in it for change to a different type film mid-roll.
For making other light balancing changes, the photographer who used film had to carry conversion filters. Fluorescent D for converting daylight film and B for converting tungsten "B" film.
Here is the deal. Since the ISO, white balance and film quality is based upon each roll of film, a 35 mm SLR camera can theoretically only be purchased once. Digital cameras increased quality depends upon the technology within the camera which changes every 18-24 months, which means a pro has to replace a digital camera very often, while their 35 mm film camera lasted for decades.