GXR FAQs - By Product

[Question] Can I adjust the brightness and contrast of the captured image in a camera ? (Level Compensation)

You can correct the brightness and contrast in still images that you have shot, and then record the corrected images.

[Caution]

    • Level Compensation is available only for captured images with this camera.
    • Level Compensation is not available for movies, MP files.
    • While you can use Level Compensation repeatedly, the image is recompressed each time and there will be some decline in image quality.

To use this feature, display the still image that you want to correct, and then go to [Level Compensation] in the Playback menu.
See the FAQ below for Playback menu operations.

Details on the Playback menu.

Level Compensation

[Auto] or [Manual] options are available in the [Level Compensation].
[Manual] allows you to correct images by adjusting histograms.

 
 

Correcting images with [Auto]

  • 1. In the playback menu, go to [Level Compensation], [Auto], and press [Fn2] button.

    The "Level Compensation [Auto]" screen appears. The original image appears at the upper left of the screen and the corrected image appears on the right.

    Level Compensation [Auto]

    • If the selected image cannot be corrected, an error message appears and it returns to the Playback menu.
    • To cancel the Level Compensation, press the [DISP.] button.
  • 2.Press the [MENU/OK] button.
    Messages appear during the correction process and then the corrected image is recorded. The original image remains unchanged.

Correcting images with [Manual]

  • 1.In the playback menu, go to [Level Compensation] > [Manual], and press [Fn2] button.
    The "Level Compensation [Manual]" screen appears. The original image appears in the upper left of the screen, the histogram is at the lower left and the corrected image is shown on the right.

    Level Compensation [Manual] screen

    • If the selected image cannot be corrected, an error message appears and it returns to the Playback menu.
    • To cancel the Level Compensation, press the [DISP.] button.
  • 2.Press the ADJ. lever to switch between points on the histogram.

    points on the histogram screen

    • A histogram shows the number of pixels on the vertical axis and the brightness of the horizontal axis, ranging from shadows (dark areas) on the left through mid-tones to highlights (bright areas) on the right. Each time you press the ADJ. lever, the selected point switches from the left point, to the middle point and then to the right point.
    • Pressing the [Macro] button at this point displays the Help screen. Pressing the [Macro] button again returns the display to the previous screen.
  • 3.Correct the image by pressing [Fn1] [Fn2] buttons to adjust the location of the selected point. Moving the left or right point moves the middle point also.

  • 4.Press the [MENU/OK] button. Messages appear during the correction process, and then the corrected image is recorded. The original image remains unchanged.



*

[Sample correction methods]
  • Example 1: To adjust the overall image brightness
    Select the middle point and move it to the left to brighten the entire image. Selecting the middle point and moving it to the right darkens the entire image.

    To adjust the overall image brightness

  • Example 2: To correct an overexposed or underexposed image
    If the image is overexposed, move the left point to the right to align it with the left end of the histogram peaks.
    If the image is underexposed, move the right point to the left to align it with the right end of the histogram peaks.
    With this point, by moving the middle point to the left or right, it allows to adjust the overall image brightness.

    With this point, by moving the middle point to the left or right, it allows to adjust the overall image brightness.

  • Example 3:To increase the contrast in an image
    If an image is lacking in contrast, the histogram peaks are concentrated toward to the center.
    By aligning the left and right points with the respective ends of the histogram peaks, you can create an image with clearly defined bright and dark areas. You can then adjust the overall image brightness by moving the middle point to the left or right.

    You can then adjust the overall image brightness by moving the middle point to the left or right.

 
Answer ID: EDXR01026
Date created: July 2, 2010
Date modified: --
Product: GXR (GR LENS A12 50mm F2.5 MACRO), GXR (RICOH LENS S10 24-72mm F2.5-4.4 VC), GXR (RICOH LENS P10 28-300mm F3.5-5.6 VC)
Operating system:   --
Category: Hardware operations
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GXR with GR LENS A12 50mm
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