LOGO Preferably SVG or PNG format with transparent background. Height 600 pixel and width 800 pixel.
FOTO JPG, landscape format, 2000 x 1500 pixel.
Depending on what screen (mobile, laptop, tablet) you have, the sides or the top/bottom might get cut off. ONLY with the option POSTER this will not happen. Then it will be downsized and fitted in (for all screens) with bars left and right (web) or bars on the top and the bottom (mobile).