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Progressive previews can be set on View preferences for the entire document or on image frame level. If set on image level, you can choose an initial preview type that will be used first before the final display quality preview is used.
Fit
Select one of the available fitting modes.
Fitting controls how the image fills the frame area.
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Frame: frame and image are set to the original size, both resize with locked aspect ratio.
Stretch: image always fills to the frame borders, ignoring aspect ratio.
Proportional: image scales proportionally within the frame borders.
Manual: image scale, size, position & rotation are set using the input fields below the preview window. Frame can be resized independent of the image.
Proportional, Outside: same as Proportional, but the imagedata is allowed outside (and cropped by) the frame borders.
Smart Fit: Will fit the asset (image) with contextual data in the image frame. (see Smart Fit for detailed information)
Original Size: The frame will fit around the original image size.
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