User`s guide

INDEX
69
Crop | Focus X/Y offset
This option determines where the auto focus is centered. This position is displayed on
the preview as a small animated box.
Film tends to curl along its length, as well as across its width in which case the focus
will be slightly off as the edges of the film will be closer to the lens than the center.
To minimize this effect, position the focus point between the center of the film and its
edge in both dimensions, or slightly closer to the edge to account for less depth-of-field
the closer to the lens.
Advanced Option: This option is displayed when the scanner is capable of focusing.
Crop | All frames
This option makes all frames use the options in this tab, instead of applying the options
separately for each frame.
Advanced Option: This option is displayed when using multiple frames.
Filter tab
This tab is used to control the infrared (IR) cleaning, restore colors, grain reduction and
sharpening options.
Filter options affect the output of cropped TIFF, JPEG and PDF files and the images in an index.
They do not affect the data of a raw scan file.
The one exception to this is if Output | Raw output with (p. 90) is set to "Save" - in this case, the
infrared cleaning and grain reduction is also done before saving the raw scan files.
See the Processing section of the topic "How VueScan Works" to understand the details of how
these filters are applied.