Samsung WM75A User Manual page 68

" Due to the nature of the manufacturing of this product, approximately 1 pixel per million (1ppm) may appear brighter or darker on the panel. This does
not affect product performance.
" This product can be set to only one resolution for each screen size to obtain the optimum picture quality due to the nature of the panel. Using a
resolution other than the specified resolution may degrade the picture quality. To avoid this, it is recommended that you select the optimum resolution
specified for your product.
" For detailed device specifications, visit the Samsung website.
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