Questions on analogic cameras properties

[Manuel Madeira]

Hi guys I have a question. In analogical cameras you have the ISO adjustment, for example, if you udse a 400 ISO filme you set your camera to 400 ISO, but what happends if I set my camera with 800 or 100 ISO with a 400 ISO film???

 

[woodlandSerenade]

If you set your camera to 800 ISO when you are using a 400 ISO film, your camera will underexpose it by one stop - it'll get one-half the light recommended by the film speed rating.
Similarly, if you set your camera to 100 ISO when using 400 ISO film, it will overexpose it by two stops - it'll get four times the light recommended by the film speed rating.

 

[ic-racer]

Hi guys I have a question. In analogical cameras you have the ISO adjustment, for example, if you udse a 400 ISO filme you set your camera to 400 ISO, but what happends if I set my camera with 800 or 100 ISO with a 400 ISO film???

Negative film will come out either too dark (ISO 100) or too light (ISO 800) and the negatives may be difficult to print. Long exposure times (ISO 100) or low contrast (ISO 800) may confound one's ability to make excellent prints from the negatives.

 

[Sirius Glass]

Setting it at 800 will cause a loss of shadow detail.

 

[PerTulip]

Hi guys I have a question. In analogical cameras you have the ISO adjustment, for example, if you udse a 400 ISO filme you set your camera to 400 ISO, but what happends if I set my camera with 800 or 100 ISO with a 400 ISO film???

Research: "Pushing and pulling film".

 

[narsuitus]

The purpose of the ISO adjustment in analog cameras is to adjust the built-in light meter.

Please keep in mind that some analog cameras do not have an ISO adjustment because they do not have a built-in light meter.

 

[Dali]

The question has nothing to do with film camera but with film speeed and meter setting.

 

[removed account4]

there are some fancy 35mm cameras that have a lot of automatic functions, changing the ISO one will change how it exposes your film. some cameras have a DX reader so it reads the canister the film comes in and automatically sets the ISO in the camera by itself, but you can MANUALLY adjust that by using the compensation features ( if your camera has them ) to-2-1 0 +1+2- your exposures ( giving +/- more or less light, which is the same as putting the meter's setting on 200 or 800 (&c) on 400 iso film. older cameras, fancier cameras, MF cameras, LF cameras that may or may not have a light meter, or working light meter. &c, the iso dial ( at that point it was ASA ) might just be a reminder to the person ( like the frame to put the film type in on the back of the camera ) so you know what film you are using. as you have seen from reading the forums here and elsewhere analog/film users typically have at least 5 or 10 cameras loaded with film and around one's neck all the time and it is easy to forget which camera is full of panF and which has Delta3200 and which has expired glove compartment baked purple, expired Kodachrome, 40year old tri x, &c . !
have fun
John

 

[Les Sarile]

Hi guys I have a question. In analogical cameras you have the ISO adjustment, for example, if you udse a 400 ISO filme you set your camera to 400 ISO, but what happends if I set my camera with 800 or 100 ISO with a 400 ISO film???

If it is a 400 speed film and you set it for 800 then the meter will be 1 stop underexposed.
If it is a 400 speed film and you set it for 100 then the meter will be 2 stop overexposed.
You can ask the film lab to either push process (in the first case) or pull process (in the second case) to compensate. If the film used is a color negative like Kodak Portra 400 then you can just process at box speed and adjust exposure in post.

 

[Autonerd]

Hi guys I have a question. In analogical cameras you have the ISO adjustment, for example, if you udse a 400 ISO filme you set your camera to 400 ISO, but what happends if I set my camera with 800 or 100 ISO with a 400 ISO film???

You got lots of good answers here. Key takeaway is that the ISO dial does not cause the types of changes it does in digital -- it merely calibrates the built-in meter to give you (more) accurate exposure settings. Cameras without a built-in meter don't have an ISO dial!

If you load 400 speed film and set the ISO dial to 100, and follow the meter, you'll overexpose your pics by two stops. If you set the dial to 100, then shoot using the "sunny 16" rule and ignore your meter, the photos will be fine.

When I am shooting in low light, I often load 400 speed film and set the ISO dial to 1600, intentionally under-exposing the film by two stops. I then compensate by developing the film for longer -- this is push-processing. The photos are properly exposed but grainer and more contrasty. The key is altering the development; if I developed normally, I'd have underexposed (dark) photos.

Aaron