Clear, Watch points – Nikon CAPTURE NX2 User Manual

Page 155

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Chapter 16 — Photo Info

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Watch Points

153

To use the

Double Threshold feature, follow these steps:

e

Clear

Press the

Clear button to clear ranges added to the histogram or the values set for the shadows and

highlights sliders of the

Double Threshold option.

Watch Points

The “Watch Points” section of the

Photo Info palette displays the position and color of the pixel under the

mouse pointer.

A

Please note

: Values for the different channels range from 0 to 255, with values for 12 and 16-bit images being

scaled to fit into this range.

1

Enable the Double Threshold checkbox within the “Histogram” section of the Photo Info palette.

2

If no black pixels appear in the image, slowly drag the shadows slider to the right. Once you notice

black pixels appearing, release the mouse button. If large groups of black pixels are displayed, try

moving the slider back to the left slightly. It is recommended that you find a value for the shadows

slider as close as possible to where the first black pixels appear.

3

Then, if no white pixels appear in the image, slowly drag the highlights slider to the left. Once you

notice white pixels appearing, release the mouse button. If large groups of white pixels are

displayed, try moving the slider back to the right slightly. It is recommended that you find a value

for the highlights slider as close as possible to where the first white pixels appear.

4

Your image now shows the lightest and darkest pixels. This feature is typically used to assist you

with finding those pixels for placing white and black points (either control points or points from

within the Levels & Curves feature). After placing white and black points, disable the Double

Threshold checkbox to continue working on your image.

Shortcut

Toggle the

Double Threshold option on

and off:

Shift + T

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