Nikon D40 manual Viewing Multiple Images Thumbnail Playback, Highlights, Histogram

Highlights
Highlights are the brightest portions of the image. Details may be
lost (“washed out”) in areas of highlights that are overexposed.
1	Protect status	54
2	Retouch indicator	89

3Highlights (indicated by flashing border)

4 Frame number/total number of images

Histogram

A histogram is a graph showing the distribution of tones in the image. The horizontal axis corresponds to pixel brightness, with dark pixels at the left and bright pixels at the right. The vertical axis shows the number of pixels of each brightness in the image. Note that camera histograms are intended as a guide only and may differ from those displayed in imaging applications.

1	Protect status	54	3	Frame number/total
2	Retouch indicator	89		number of images
			4	Histogram

1 2 3

4

12

3

4

Viewing Multiple Images: Thumbnail Playback

To display images in “contact sheets” of four or nine images, press the button in full-frame playback. The following operations can be performed while thumbnails are displayed:

To	Use	Description
Display more		Increase number of images displayed from one (full-frame play-
images per page		back) to four or from four to nine.
Display fewer		Decrease number of images displayed from nine to four or from
images per page		four to one (full-frame playback).
View photo		View highlighted photograph full frame.
Highlight	or	Use multi selector or command dial to highlight photographs.
photographs
Delete photo		Delete highlighted photograph (		54).
Protect photo	( )	Protect highlighted photograph (		54).
Exit to shooting	Shutter button	To return to shooting mode, press shutter-release button halfway
mode	or	or press the	button.
View menus		View menus (	63).
Display shooting		Display shooting information ( 22).
information

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Reference: More on Playback/Viewing Photographs on the Camera