create a product shot of a black booklet, with 50 pages. The size of the booklet is 21 x 30 cm, and the style is saddle stitched. The scene is minimal, in a black plain background, the booklet first page is plain black. Display the booklet closed, view frontal from top, on top of gray industrial concrete. the scene has a cinematic light, captured by Canon EF 50mm f/1.8 STM Lens, magazine stylist ad.  --ar 4:5