Canon MG8100 series On-Screen Manual page 797

Adjusting Cropping Frames
Exposure/Tone Settings (Film only)
Manual Exposure
This function enables you to adjust the exposure data according to the film.
When this checkbox is not selected, the optimal exposure data (the exposure level for each RGB
channel and compensation levels) is automatically set according to the color density of the portion
within the cropping area of the film.
Select this checkbox if you intend to adjust the image using an application after it is scanned or to
scan with an under-exposed or over-exposed effect.
After you select this checkbox, you can adjust the exposure in 1% increments within the range of
50% to 200%.
Important
You can set Manual Exposure after preview.
This setting is not available when Apply the tone value to all frames / Apply the tone value to
all crops is applied.
Note
When this checkbox is not selected, the time required for scanning varies by film since the
exposure is automatically optimized according to the film.
Apply the tone value to all frames / Apply the tone value to all crops
"All frames" is displayed in thumbnail view, and "All crops" is displayed in whole image view.
Click Apply to reflect the color adjustment data of the selected film frame or the portion within the
selected cropping frame into other frames. This color adjustment data will be used in subsequent
scans. It will remain in effect until you click Reset.
This is useful when you want to scan film of photos taken on the same day in the same place, in a
consistent color tone.
Important
You can set Apply the tone value to all frames / Apply the tone value to all crops after preview.
High Quality
Set to ON to improve the image quality and reduce noise when scanning film.
Important
Image quality may not change depending on the film type.
This setting is not available when Apply the tone value to all frames / Apply the tone value to
all crops is applied.
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