January 2018
Intermediate to advanced
480 pages
12h 59m
German
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B.1LICHT, LICHTWERTREIHE, BLITZTECHNIK
Aufgabe 1: Quadratisches Abstandsgesetz
Sie haben eine Szene aus Lichtquelle und Motiv aufgebaut und 12 EV gemessen. Nun entfernen Sie die Lichtquelle vom Motiv. Dabei verdoppeln / vervierfachen / verachtfachen Sie den Abstand. a.) Welchen Lichtwert messen Sie jeweils? b.) Welchen Lichtwert messen Sie bei einer Verdreifachung? c.) Welche Lichtwerte messen Sie, wenn Sie anstelle der Lichtquelle den Abstand der Kamera zur Szene verdoppeln / vervierfachen / verachtfachen?
Lösung:
a.) Bekannt ist: –1 EV bedeutet einen Abfall der Beleuchtungsstärke auf die Hälfte, –2 EV auf ein Viertel. Auch beim Abrücken auf den doppelten Abstand fällt die Beleuchtungsstärke auf ein Viertel. Schrittweises Verdoppeln des Abstandes ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.