All problems
In group photos, someone is always soft
Depth of field for several people
Why it happens
- The aperture was wide open (f/1.8–f/2.8), so the sharp zone was too thin for two rows.
- People stood at very different distances from the camera.
- The focus locked on the front row only.
How to fix it
- 1
Close the aperture to f/4–f/8 — the sharp zone deepens and everyone fits inside it.
- 2
Arrange faces on a shallow curve rather than a straight line, so all are equidistant.
- 3
Focus on the person nearest the camera; the zone extends behind them.
- 4
Keep the shutter at 1/160s or faster — with groups someone always moves.