If the two channels of your OptoSplit are not parallel then it may be the case that you are adjusting the two channels using the wrong controls. When the 2 channels are superimposed you should only need to make adjustments using the split control and aperture controls. If you are using the V1 and V2 controls to split the image along the vertical axis it can result in the channels becoming misaligned. If this occurs you should refer to the manual to realign the OptoSplit. If you need a manual for an older version of the OptoSplit then don't hesitate to contact us.

A lesser degree of misalignment can occur if you turn the split control clockwise when spliting the image along the horizontal axis. The OptoSplit is designed to work optimally when the split control is turned anticlockwise.

Here is a diagram showing the controls for most recent OptoSplit. Older versions may have different control names but all the controls are located in the same place.

The rough edges in the image are a classic case of dirt on the aperture blades and can be remedied by cleaning with a lint free lens tissues.