Tốc độ và khẩu độ cho máy phim

I. Chon toc do:

1. Co fai cach chon toc do cua may chup film cung giong nhu nguyen tac “toc do an toan” cua may ky thuat so:

vd: lens: 20mm 35mm toc do an toan thuong la >= 1/40; lens: 500mm toc do an toan se la 1/600

2. Thong tin em thu thap duoc tu kodak.com, khau do duoc chon thuong la:

vd: cho film chrome

troi nang gat: f/22
troi nang vua: f/16
troi nang nhe: f/11
troi may: f/8
troi thieu sang f/5.6

Toc do trung binh cua film 100 asa la: 1/125
Toc do trung binh cua film 200 asa la 1/250
Toc do trung bnh cua film 400 asa la 1/500

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