Picture format #2.
Thanks to Instagram are square cut photos at the moment popular againg.
Hasselblads in square 6: 6 format were particularly popular for high-quality studio recordings. I love this camera! At the same time, square pictures are static and without dynamics, which fits well with staged studio photography.
If you place your main motive to the right or left in the image, the image becomes a landscape format, but if the subject is at the top or bottom, the image has a portrait format.
A centrally placed main motive creates a special charm and leads to a very present and strong image impression. With square pictures it is hard to convey a sense of depth. Therefore, it is important to foreground a motive when designing the picture.