33More on PhotographyI Controlling Exposure: Exposure CompensationExposure compensation is used to alter the exposure from the value suggested bythe camera. Exposure compensation can be set to values between –2.0 EV (un-derexposure) and +2.0 EV (overexposure) in increments of 1/3 EV.Exposure CompensationExposure compensation is not available when K FIREWORKS SHOW (c39) is selected inthe Scene mode.Exposure Compensation in P and A ModesIn addition to exposure compensation, exposure can be set with flexible program in P (Pro-grammed auto) mode and aperture in A (Aperture-priority auto) mode.Choosing a Value for Exposure CompensationAs a rule of thumb, select positive values when large areas of the frame are very brightly lit(for example, when photographing an expanse of sunlit water, sand, or snow) or when thebackground is much brighter than the main subject. Choose negative values when large ar-eas of the frame are very dark (for example, when photographing a forest of dark greenleaves) or when the background is much darker than the main subject. This is because thecamera, in order to avoid extreme under- or over-exposure, tends to lower exposure whenthe frame is very bright and raise exposure when the frame is very dark. This can make nat-urally bright subjects look darker and naturally dark subjects appear over-bright, or “washedout.”HistogramA histogram shows distribution of tones in image; horizontal axis corresponds to pixel bright-ness, with dark tones to left and bright tones to right, while vertical axis shows number ofpixels of each brightness in the image.The scale of an axis is determined by the maximum number of pixels of a picture.Display value for exposure compensation(exposure compensation setting screen)and histogram (distribution of tones).Highlight desired value.• You can frame your subject, focus, andshoot.• Press d to exit.: Exit: Exit00Histogram+1.0+1.0: Exit: Exit