Digital GEM slider

Digital GEM

Digital GEM reduces the effect of grain in color film. Grain is a sandy texture that can sometimes be seen in smooth uniform areas of the image such as the sky. Grain is more pronounced in fast film. Results vary with the film. See page 11 for memory requirements. Digital GEM cannot be used with silver-halide black and white films.

Confirm the scan settings for the final scan before using Digital GEM. Check the autofocus-at- scan function is active in the preferences box (p. 40), or use point AF or manual focus (p. 44) before using Digital GEM.

Digital SHO

Digital SHO optimizes highlight and shadow detail. For memory requirements, see page 11.

Click the Digital GEM button to activate the function. Click the Digital ICE4 tab to show the control pane.

Place the Digital-GEM sample area over a portion of the image. Choose a smooth uniform area for the evaluation; skin or sky are good subjects. To enlarge or reduce the Digital GEM

Reset button Apply button

Digital ICE4 tab Digital GEM button

Original

With Digital SHO

sample area, click and drag the edge of the marquee. To it, click and drag inside the area. Click and drag outside the marquee to define a new area.

Click the apply button to begin a scan; a prescan and the final scan are made together. The sampled area is displayed on the right.

Use the Digital GEM slider or enter an interger between 1 and 100 in the text box to adjust the amount of processing; the apply button turns red after each adjustment. Click the apply button to view the result.

Sample display

Digital GEM sample area

Click the Digital SHO button to activate the function. Click the Digital ICE4 tab to show the control pane.

Make a prescan.

Use the Digital SHO highlight and shadow sliders or enter an integer between 1 and 100 in the text box to adjust the amount of process- ing. The threshold slider defines the upper level shadow processing is applied and the lower level highlight processing is applied. Images have 256 levels from black (level 0) to white (level 255).

Reset button Apply button

Digital ICE4 tab

Digital SHO button

Click the scan button to save the data. To turn off Digital GEM, click the Digital GEM button

again or move the slider to the off position. When Digital GEM is activated, the default processing level is applied to all frames in the holder. Any adjustments are only applied to the selected image(s).

Scanner Notes

Black and white chromegenic films that are designed to be developed in a C-41 or equivalent color process, Kodak T-400CN or Ilford XP2 Super, can be processed with the Digtal ICE, ROC, GEM, and SHO functions. These films should be scanned with the film type set to color negative (p. 28). Set the saturation level in the hue, saturation and lightness palette to -100 to remove the color (p. 63). The scanned data can be convertered to grayscale with an image- processing application to reduce file size and eliminate the color channels. Results cannot be guarantied with other types of black and white film.

The apply button turns red after each adjust- ment. Click the apply button to view the result.

Threshold slider

Highlight and shadow sliders

Click the scan button to make the final scan. To turn off Digital SHO, click the Digital SHO button again or move the slider to the off position. When Digital SHO is activated, the default processing level is applied to all frames in the holder. Any adjustments are only applied to the selected image(s). Digital SHO can only be used with 8-bit color depth (p. 40). The exposure-co trol tab is disabled. This function cannot be used with silver-halide black and white films; see scanner notes on page 52.

52

Advanced image processing

53