I recently have been scanning my fuji instax mini film on my Espon V600. When scanning the instant film I usually scan a larger region to have a buffer around the film. This is to make sure I am always scanning the entire image. This allows me to use the original instax border or to crop the image to my liking instead of cropping it during the scanning phase.
After scanning the image I would bring it into Lightroom to straighten and crop.
var doc = app.activeDocument; // Compute instax ratios for perfect white border in inches var topMarginPercent = 0.29/2.44; var sideMarginPercent = 0.16/1.81; var bottomMarginPercent = 0.62/2.44; var docHeight = doc.height; var docWidth = doc.width; var sideMargin = (2.0 * sideMarginPercent * docWidth); var bottomMargin = docHeight * bottomMarginPercent; var topMargin = docHeight * topMarginPercent + bottomMargin; doc.resizeCanvas(null,UnitValue(bottomMargin + docHeight,"in"),AnchorPosition.TOPCENTER); doc.resizeCanvas(UnitValue(sideMargin + docWidth,"in"), null, AnchorPosition.MIDDLECENTER); doc.resizeCanvas(null,UnitValue(topMargin + docHeight,"in"),AnchorPosition.BOTTOMCENTER); // Set the background to white after extending the canvas size // it would be black otherwise var white = new SolidColor(); white.rgb.red = 255; white.rgb.green = 255; white.rgb.blue = 255; doc.backgroundColor = white;