Chicago HD wedding video, HI DEF, high definition wedding video, HD video 1080i, 1080p, FULL HD, 16:9, Cinematic wide screen, Chicago Wedding Films, Chicago wedding Cinema, HD video for Chicago weddings delivered on DVD and Blu-ray DVD. HD shoots in a 16:9 rectangle format, whereas SD shoots in a 4:3 square format. SD can shoot in 16:9 mode as well but since HD has double the resolution size, the picture is sharper and crisper. And even if the HD image is delivered on a SD DVD the image is still better.