How to deal with Sony a350 fully manually?

After setting the wheel to M, set the autofocus switch on the fuselage to M, and then focus manually. Toggle the wheel to adjust the shutter speed, and press and hold the AEL key to adjust the aperture.

This is also related to the setting of the fuselage. If you don't set this, the above adjustments may be inconsistent, but you can never leave. You can specifically adjust the camera settings menu to see how it is set. It's not difficult.