There are some terms where many people talk about but it still puzzles me. Tried doing a serach but cant gether much info. Would like to ask people in CS for help.
Many people talk amout our noraml film camera as 35mm film camera. Why is it 35mm? Where did they get this measurement from? What i know the size of a negative frame is 36mm x 24mm. So 35mm is from?
Why are those normal roll films called 135? Is there any particular reason?
Now about MF. I understand there is 120 and 220 films. 120 have the paper backing while 220 doesnt have. But how did the 2 numbers come about? Is it possible to find 220 films in SG? Can all MF cameras use 220 films?
Now about photo sizes. What does the suffix "R" stands for? Many people know 4R is 4" x 6". how big exactly is 1 "R"? Does "R" measures area or length?
Many people talk amout our noraml film camera as 35mm film camera. Why is it 35mm? Where did they get this measurement from? What i know the size of a negative frame is 36mm x 24mm. So 35mm is from?
Why are those normal roll films called 135? Is there any particular reason?
Now about MF. I understand there is 120 and 220 films. 120 have the paper backing while 220 doesnt have. But how did the 2 numbers come about? Is it possible to find 220 films in SG? Can all MF cameras use 220 films?
Now about photo sizes. What does the suffix "R" stands for? Many people know 4R is 4" x 6". how big exactly is 1 "R"? Does "R" measures area or length?