Custom calculations begin with the user defining a source aspect ratio. Proportionate relative ratios are then returned based on user defined "width" and/or "height" inputs.
The RETURN key triggers calculations in both modules. Clicking through the "Mode Selector" segmented controller located in the Fixed Calculator will also trigger calculations when preexisting width and/or height inputs are present.
The Crop Calculator displays the amount of pixels that need to be cropped from the top and bottom of a 16x9 frame when letterboxing an image for a more "cinematic" look. Cropped video outputs will exhibit a full frame image view of the target aspect ratio. Currently aspectRatio supports 1.78:1 sources, and relative 2.35:1, 2.39:1, and 2.4:1 targets.