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UTJECAJ VRSTE REALIZACIJE FOTOGRAFIJE NA DINAMIČKI RASPON

IMPACT OF THE TYPE OF PHOTOGRAPHY REALISATION ON DINAMIC RANGE

Željko Bosančić, Ivana Pavlović, Nikola Mrvac, Tibor Skala

Sažetak

Dinamički raspon predstavlja odnos između najtamnijeg i najsvjetlijeg dijela scene odnosno slike, a defi nira maksimalni raspon tonova koji se mogu snimiti, odnosno reproducirati nekim izlaznim uređajem. Ukoliko se fotografi ja snima pri direktnoj intenzivnoj svjetlosti javlja se potreba za HDR tehnikom fotografi ranja. HDR je skup tehnika kojima se kombiniraju pojedinačno različito eksponirane fotografi je istog motiva, kako bi se dobila jedna fotografi ja proširenog dinamičkog raspona te se tako mogu prikazati detalji i u sjenama i u svijetlim djelovima koji se inače gube. Golemo ograničenje kod stvaranja HDR fotografi je predstavlja realizacija odnosno ispis digitalnog zapisa fotografi je. U eksperimentalnom dijelu rada se ispituje razlika dinamičkog raspona u ovisnosti o tehnici ispisa digitalne fotografi je. Promjena dinamičkog raspona se analizira u odnosu na dinamički raspon defi niran na originalu prikazanom na monitoru računala.

KLJUČNE RIJEČI: DINAMIČKI RASPON, HDR FOTOGRAFIJA, ISPIS FOTOGRAFIJE, RASPON TONOVA

Abstract

Dynamic range represents the relationship between the darkest and lightest parts of the scene or image, and defi nes the maximum range of tones that can be shoot or realized with output devices. If the photograph is taken in direct intense light the need for HDR technique (a photo of a large dynamic range) of photograping occurs. HDR is basically set of techniques that combine separately diff erently exposed images of the same motives, in order to get one photograph of the expanded dynamic range, which will discover the details in the shadows or bright parts that are usually lost. Huge limit in the creation of HDR photography is a realization or printing of digitally recorded photographs. Th is paper analyzes diff erence of dinamic range in relation of printing technique. Change of dynamic range is analyzed in relation to the dynamic range defi ned by the original displayed on monitor.

KEY WORDS: DYNAMIC RANGE, HDR PHOTOGRAPHY, PHOTOGRAPHY PRINTING, TONE RANGE

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