Abstract
Accuracy in calculating exposure in photographic techniques is the key to being able to produce good quality photos. The light calculation includes three elements (Triangel Exposure), namely shutter speed (shutter speed / t), ISO sensitivity, and diaphragm (aperture / f). A light meter is a tool for calculating lighting in the world of photography to accurately calculate the light falling in or around the object to be photographed. The light meter has a working principle like a lux meter calculates the value of light intensity in a place. However, on a light meter for photography, there is a calculation of a triangle exposure in it. This light meter prototype uses an ATMega328 microcontroller on the Arduino Nano V3 with the help of a TSL2561 light sensor and a TCS34725 RGB color sensor. Tests were carried out by comparing the output value using an original light meter, namely Sekonik Flashmate L-308X with the continuous light shooting method. The results of the test using the original tool with the ATMega328 microcontroller produced values above 90%.
Highlights
Abstract−Accuracy in calculating exposure in photographic techniques is the key to being able to produce good quality photos
A light meter is a tool for calculating lighting in the world of photography to accurately calculate the light falling in
a working principle like a lux meter calculates the value of light intensity in a place
Summary
Fotografi sudah popular sejak lama baik fotografi analog maupun digital. Terdapat banyak sekali jenis kamera digital berteknologi canggih yang sekarang ini sangat mudah untuk didapatkan seperi kamera DSLR ataupun Kamera Mirrorless. Sebagai sensor utama untuk menghitung nilai intensitas cahaya (lumens) yang kemudian akan diolah menjadi sebuah hasil output berupa perhitungan segita eksposur (triangle exposure) sedangkan sensor warna digunakan untuk kestabilan warna (white balance) dengan satuan nilai kelvin. Pada penelitian yang pernah dilakukan oleh Aditi Sonar dan teman-teman dalam penelitiannya kalibrasi lux meter dengan metode perbandingan dengan Arduino [10]. Sedangkan pada penelitian tentang penggunaan sensor warna TCS34725 yang sudah pernah dilakukan oleh Neneng Fitrya dan teman-teman [11]. Sedangkan pada penelitian alat penghemat konsumsi energi dengan modul sensor cahaya LDR yang dilakukan [13], menghasilkan penelitian bahwa sensor cahaya LDR dapat bekerja secara efektif dalam mengatur keterangan cahaya lampu indoor dan outdoor menyesuaikan intensitas cahaya (lumen) dari faktor pencahayaan utama matahari. Pengujian tersebut dilakukan dengan cara menghitung cahaya yang jatuh ke objek foto (incident light)
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