 Stephanie Adams |
ASA-what does it mean? What do the ASA numbers mean on film? I know there are the numbers 120,220 and 135. I usually buy 135, but is there a reason I should look into 220 or 120? Are these better for certain types of photos such as scenics etc? I am just learning about film types and would apprecaite any help. Thanks so much. Stephanie Adams
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Jeff S. Kennedy |
ASA stands for American Standards Association and is an old designation. It is now ISO (International Standards Organisation). Both use the same designations and refer to film speed. For example ISO 400 speed film. The numbers you are using are not ASA or ISO numbers. Rather they are film sizes. 135 refers to 35mm film. 120 & 220 are medium format films. 220 simply being a roll of 120 but twice as long.
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Stephanie Adams |
Thanks so much, Jeff! I really appreciate it and it all makes sense now :O) Have a nice day!
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