Utjecaj izvora svjetla na procjenu fotografije i fotografiranog motiva

Anna Maria Hackenberger Kutuzović1, Trpimir Jeronim Ježić1, Miroslav Mikota1, Teo Žeželj1

am.hackenberger@gmail.com, trpimir.jezic@grf.hr, miroslav.mikota@grf.hr, teo.zezelj@grf.hr
1Sveučilište u Zagrebu Grafički fakultet, Getaldićeva 2, Zagreb, Hrvatska

Sažetak

Pronalazak jasnih korelacija između određenih vanjskih faktora, dobivene fotografije i niza različitih doživljaja promatrača tehničko je pitanje grafičke reprodukcije od primarne važnosti za fotografiju u službi vizualne komunikacije. Izvor svijetla jedan je od neizbježnih čimbenika koji uvelike određuje fotografski rezultat reprodukcije motiva. U radu se propituje kako se svojstva svjetlosnog kontrasta uzrokovanog postavkama izvora svjetla odražavaju na doživljaj samoga motiva. Na taj se način pokušava pratiti uzročno-posljedični lanac u vizualnoj komunikaciji putem fotografije od osvjetljenja motiva do konačnog doživljaja potaknutog gledanjem reprodukcije svjetlosnog zapisa odražene svjetlosti. Povod istraživanja zasniva se na mnogo puta posvjedočenoj zamjedbi kako se portretnom fotografijom na razne načine i u različitim stupnjevima uspješnosti može prenijeti osobnost samog fotografiranog modela, barem u smislu nekakve njegove predodžbe. Takav doživljaj u sebi sadrži cio niz reakcija od uočavanja obrisa i boja do uspostave emotivnih interpersonalnih stavova između promatrača i njegova doživljaja motiva. Metodologija istraživanja osmišljena je kako bi što dosljednije pokušala pratiti fizičke (objektivne) uzroke do doživljajnih (subjektivnih) ishoda ograničavajući se na praćenje utjecaja triju različitih postavki izvora svjetla na doživljaj crno-bijelih portretnih fotografija.
Ključne riječi: Fotografija, izvor svijetla, kontrast, percepcija, emotivni doživljaj

The impact of light source settings on the perception of photography and photographic motifs

Abstract

Identifying the correlations between certain external factors, resulting photography and a variety of observer experiences is a technical question of graphic reproduction of primary importance to photography as a media of a visual communication. Light source is one of the imminent factors which grossly determine the photographic outcome. The article raises the question of the influence of contrast in luminosity, as a direct consequence of a light source settings, as it is reflected in the observer’s visual experience of the photographed motif. The approach attempts to trail the causal chain in visual communication trough the medium of photography starting from attributes of light source and ending with characteristics of user’s experience stimulated by the light reflected from the photographic light trace. The research is motivated by the frequently attested observation that a photographic portrait can convey in numerous ways and in various efficacy rates the personality of photographed subject, leastwise in the form of a conjecture. This kind of experience presents us with a rich palette of perceptual feedbacks, from plain notice of contours and colour blobs all the way to establishing an emotional stance and an interpersonal relation between the observer and the observed. Research methodology is designed to track those responses, from physical (objective) stimulus to experiential (subjective) outcomes, limiting its scope to observing influence of three different light source settings on the perceptual characteristics of grayscale photographic portraits.
Keywords: Photography, light source, contrast, perception, emotional response


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