against the left (zero) side of the histogram, the image is probably underexposed, and will be dark. Likewise, if a significant portion of the image data is above the desired value for highlight detail, the image is prob- ably overexposed, and will be bright. Data concen- trated near both ends of the histogram implies a high- contrast image, with little midtone, while a histogram with a narrow spread of data indicates a
Whenever the spot meter is active, an indicator in the histogram display shows the position of the data value for the spot being read relative to the overall histogram; this feature can quickly relate specific areas of the image to specific regions in the histogram.
Histogram of an underexposed scene.
Histogram of an overexposed scene.
Static Spot Meter Location Readings
Whenever a spot meter location is saved, a set of circles in the preview image marks the location, and a color coded line in the histogram display marks the relative data value for this location. The circles are static and will remain in the same locations for sub- sequent prescans, until the meter is cleared. However, the color coded lines in the histogram will move to reflect any changes in data value for each marked loca- tion.
The data values for the marked spot meter loca- tions are displayed in the Color and Tone tab panels. The RGB values for each spot meter marker are listed next to their respective colored circle.
Histogram of a high contrast scene.
Histogram of a low contrast scene.
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