PENJABARAN PERSAMAAN SISTEM PENJUMLAHAN PAJANAN FOTOGRAFI

IMAM SULTHON, Dr. Mitrayana, S.Si., M.Si,

2015 | Skripsi | S1 FISIKA

Telah dilakukan penurunan persamaan sistem penjumlahan pajanan fotografi (The Additive system of Photographic Exposure) dalam sistem kamera. Lensa tipis sederhana digunakan sebagai model lensa kamera yang sesungguhnya. Mula-mula diturunkan persamaan dasar pajanan kamera (camera exposure) dari analisis geometri dan fotometri pembentukan bayangannya. Sementara rumusan sistem penjumlahan pajanan diperoleh dengan merubah persamaan dasar tersebut ke dalam bentuk skala pajanan (exposure value), yakni bilangan logaritma basis-2. Selajutnya rumusan penjumlahan tersebut digambarkan dalam skema kalkulasi berupa diagram garis.

The equation of the Additive system of Photographic Exposure (APEX) in camera system has been derived. Simple thin lens has been used to approach the real lens system. The basic equation of camera exposure should be derived firstly by analyze both of geometry and photometry of image formation. The APEX equation would be obtained by modifying the basic equation to the form of exposure value system that difine by base-2 logarithm number. Then the calculated of the APEX eqution would be drawn in a diagram line.

Kata Kunci : pajanan fotografi, skala pajanan, kamera, geometri optik, fotometri/photographic exposure, exposure value, camera, geometric optic, photometry