Solutions When the Image is not Rectangular

If the projected image is not evenly rectangular, try the following solutions:

Place the projector directly in front of the center of the screen, facing it squarely, if possible.
Adjust the H/V-Keystone setting to correct the image shape.
Multi-Projection > Geometry Correction > H/V-Keystone
Adjust the Quick Corner setting to correct the image shape.
Multi-Projection > Geometry Correction > Quick Corner
Adjust the Curved Surface setting to correct the image shape projected on a curved surface.
Multi-Projection > Geometry Correction > Curved Surface Mode > Curved Surface
Adjust the Corner Wall setting to correct the image shape projected on a curved surface with right angles.
Multi-Projection > Geometry Correction > Corner Wall Mode > Corner Wall
Adjust the Point Correction setting to correct slight distortion which occurs partially.
Multi-Projection > Geometry Correction > Point Correction Mode > Point Correction