Why is there a big difference in body shape when you look in the mirror and in the picture?

pu1. I think it's better because it makes you look slim

2017-10-21

OK

pu2. I thought the mirror looked slimmer.

2017-10-21

OK

pu3. It's because the camera lens is distorted more than you think
If the pictures look thinner than they really are, it's because of the wide-angle lens
On the other hand, if you wear telephoto lenses, you look fat
The lenses that I use a lot on my phone are wide-angle lenses, so I think my friends took them with their phones

2017-10-21

OK