Dag 26: Histogram Magi

Det er ingen hemmelighed, at jeg er en stor fan af LR3. Jeg estimerer, at 85% af al min fotoredigering udføres i LR3, hvorimod Photoshop CS5 bruges i situationer, hvor jeg er nødt til at arbejde med lag eller bestemt portrætforbedring.

Når vi undertiden (eller ofte) er nødt til at fange en scene i en hast, er det ikke altid muligt at optimere optagelsesindstillingerne. Men så længe vi skyder i RAW, bevarer vi muligheden for at optimere optageforhold på stedet ved vores skrivebord derhjemme.

Her er et godt eksempel. Dette foto blev taget på vej hjem fra et møde i dag, og mens jeg kørte, bemærkede jeg denne himmel med de dejlige skyformationer og farver. Så kørte ind til siden, rullede vinduet ned og stabiliserede mit kamera på dørkarmen. Jeg havde ikke tid til at tænke meget på de korrekte optagelsesindstillinger, men indstillede bare en passende lukkerhastighed og blændeværdi i manuel tilstand.

Som du kan se, er hvidbalancen forkert, og eksponeringen er ikke korrekt. Det tilsvarende histogram ser sådan ud:

Det er klart, at eksponeringen er forvrænget til den mørke side og mangler lidt mere dynamik i de midterste toner.

Efter nogle ændringer i LR3 kom jeg frem til dette foto. Det er tydeligt, at hvidbalancen er blevet korrigeret (ved hjælp af værktøjet White Balance Selector). Histogrammet viser også en meget mere afbalanceret fordeling mellem mørke og lyse områder.

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