Wilt wrote in post #18501861
The PRINCIPLES are identical whether you have 1 or 10 or 20 people...with the wider the angle FL:
As a rule, that does not correlate at all with many photos I've taken with people. That's one reason I decided to post this thread and see what various people prefer. And for weddings, it can involve anywhere from one person to a large group of people.
I will use the image below to explain why what you suggested does not apply for many of the photos I've taken. The image below was taken at 26mm with a Canon 16-35mm f/4 ... there is near zero distortion to the woman in the image.
if 30 people were lined-up in the center third of this same scene, there would still be nearly no distortion to any of the subjects.
I have photographed several people at this same tree, or in similar settings, at 12mm, 14mm, 26mm and 45mm. The wider angle, the less distortion I get with the people. And curvature, etc., is mostly the perimeter of the scene.
This is different from many weddings, but it's a good example to cover why ultra wide angle can work without distortion to people. In my case, I shoot crop sensor M5, but also a Canon 5DS with images 5600 x 8600 pixels. I can use wide angle, and crop rather large images from images as one extra option.
The red dress is the other sister. Shot at 16mm, and she looks proportionally the same to when I've used 85mm from different angles and distances. I could place a couple or group in that scene too, with normal looking humans.