Chiz Dakin Outdoor Photography Magazine Special Edition Understanding Hd Video Ammonitr Press by Desconocido

Author:Desconocido
Language: spa
Format: azw3
Published: 2014-04-10T08:31:48+00:00

Histograms

Zebras

A histogram is simply a graph that shows how Zebras are the fl ashing parts of an image that much light and dark there is in a given scene indicate that the highlights or shadows have or image. Most cameras have some means of been clipped (often called ”blinkies” in still showing these on the Live View display, and they photography). Zebras are usually hatched areas are very useful as the LCD screen isn’t always that are superimposed on the image display reliable when it comes to showing the true in Live View, rather than fl ashing parts of the brightness (or darkness) of an image.

image, and at this moment in time, only third-Viewing the histogram of a scene you plan to party fi rmware additions such as Magic Lantern shoot beforehand is useful as it will allow you to will show them. They are a quick and simple make sure that the highlights and shadow details way of assessing the exposure while shooting.

are fully recorded. If either end of the graph is bunched up against the upper or lower boundary Controlling the exposure

of the graph then not all of the information in If your eyes can see a 14-stop dynamic range, the highlights and/or shadow details is being and the camera can record 10 stops, you need recorded: this is known as “clipping.”

to be careful of the highlights and shadows You may be able to resolve this by adjusting as they may not record as well as you expect.

the exposure or composition, but if this is In simple terms, there’s a variety of different impossible you may need to choose a different combinations of shutter speed, aperture, and composition or shoot from a different angle.

ISO that will produce the ”correct” exposure for HISTOGRAM

A histogram shows the tonal

distribution in an image, and

is a useful guide in preventing

clipped highlights or shadows.

Some cameras can also show

a histogram for each of the

individual RGB color channels.

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Understanding HD Video

UNDERSTANDING HD VIDEO CH 6 98-119.indd 108

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