horizontal frame mockup 7:5, 70x50, a4, a3, a2, a1 landscape. set of four thin black frames. gallery wall mockup, set of 4 frames

3x2 5x7 70x50 7x5 art aspect background black blank bright clean copy decor display empty four frame frames gallery hanging horizontal interior landscape mat minimal minimalist mockup modern passepartout photography picture poster ratio set space thin wall white