Using The Sliders - Hasselblad CF DIGITAL CAMERA BACK RANGE User Manual

The Gradations Window
88

Using the Sliders

All of the settings you make using the curves and sliders in the
Gradations window are saved with the current setup. The contrast,
brightness, gamma and shadow depth settings can also be adjusted using
the Contrast tab of the Setup window.
Using the Sliders
The sliders provide a quick and easy way to adjust the contrast,
brightness, gamma, and/or shadow depth of your images. These
adjustments affect the image, but are not reflected on the gradation graph
that appears at the bottom of the window if you click on the triangle.
The sliders behave as follows:
•
Contrast: This control affects the contrast in the image. Positive values
increase contrast in the overall image by compressing the contrast in the
highlight and shadow areas. Negative values reduce contrast in the
midtones, but improve visibility at the extremes of the tonal range. This
control is easy to use, but is less precise than using the curve.
•
Brightness: This control affects the brightness of all points in the image.
Positive values brighten the image, negative values darken it. This
control is easy to use, but is less precise than using the curve.
•
Gamma: The gamma setting applies a predefined gradation curve.
However, unlike the standard gradation curve, the gamma setting is
strictly controlled, so it enables you to use a color management program
that is calibrated to the camera back at a given gamma setting. The
default is 2.2. If you raise the gamma setting, then the image will
become lighter and more details will be visible in the dark areas. The
opposite occurs if you decrease the setting.
•
Shadow depth: This setting controls a complex algorithm that affects
the level of detail visible in the shadow areas of your image. The higher
you move this slider, the more detail you will be able to see in the
shadows. However, this will also reduce contrasts in the rest of the
image. A setting of zero effectively disables this feature.
To neutralize all settings in all color channels of the gradation curve and
sliders, click on the Reset button. None of your other FlexColor settings
will be affected.
NOTE! The sliders affect all colors equally. They are not affected by the
setting in the color channel pop-up menu located above the gradation
curve.
Software Reference - FlexColor 4.0 for Camera Backs