Do I need a cyclorama corner?

You need a corner when the camera, subject, or lighting needs to move beyond a straight-on setup.

A single straight wall works well when you shoot from one primary angle and keep the subject centered in front of the background. A corner gives you more usable shooting area by extending the seamless background onto a second wall. That matters for fashion, video, interviews with camera movement, group shots, product work, and any setup where the subject changes position.

The tradeoff is field of view. When you shoot into a corner, both walls angle toward the camera, so the background can leave frame sooner than expected. The right corner size depends on lens choice, camera position, subject movement, and the width of the shot.