Crop The Image - Barco F50 User Manual

9. Advanced picture adjustments
9.2

Crop the image

About
Main menu — Picture — Advanced — Cropping
Cropping is used to manage image loss and/or letterboxing when the aspect ratio of the projector display and the image source do
not match.
The crop can only be applied to the image's vertical position, that is the top and bottom of the image.
The default setting for the crop function is disabled; all cropping functions are turned off and the display aspect is set via the aspect
menu (see "Choose an aspect ratio", page 80).
There are 3 crop modes: preset, auto and manual.
All cropping is done dynamically. For best results we recommend you pause the movie on the screen, making
sure any subtitles or text are visible, and then activate the cropping function from the menu, Main menu —
Picture — Advanced — Cropping.
Preset crop mode
In Preset mode, the image is altered without constraints to fill the display aspect. Available aspects are:
• 16:9
• 1.85:1
• 2.35:1
• 2.37:1
• 2.40:1
In this mode the image is adjusted to fill the frame, and may not be proportionally correct.
Auto crop mode
In Auto mode, the projector analyses the top area of the image for letterbox bars and automatically calculates the ideal crop location.
The crop is equally applied to the top and bottom of the image.
The auto crop algorithm assumes that the top and bottom of the image are identical.
Manual crop mode
Manual mode allows the user to manually input the number of lines (top and/or bottom) that will be cropped from the image. This is
ideal for films or videos where text or subtitles appear in the upper or lower letterbox bars.
To calculate a manual crop value, use the following equation:
Vertical resolution — (Horizontal resolution ÷ aspect ratio) = crop value.
The projector has a native display aspect of 16:9 (1920x1080) but the movie you want to display has a native resolution of aspect
ratio of 2.4:1 (2560x1080). The movie subtitles are located in the lower letterbox, and some of the text is missing when the movie
is displayed in its native aspect.
The crop value calculation will look like this: 1080 – (1920 ÷ 2.4 = 800) = 280.
280 is the total number of lines that shall be cropped. How that value is distributed over the upper and lower letterbox bars can be
affected by details such as location of subtitles and should be decided on a case-by-case basis.
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