Using only Nadir Camera for Ortho

Start by copying the RetainedPhotos layer so the original data stays intact. Then open Feature Analyst for the newly copied RetainedPhotos.

Scroll to the right in the Feature Analyst dialog until you see PhotoPath. Sort this field, then select all paths ending with _P_###.jpg and _S_###.jpg. These are all the photos for your starboard and port cameras. Click the Delete button on the top right hand corner of the Feature Analyst dialog. Close Feature Analyst.

Navigate to the Feature Edit ribbon. SAVE YOUR EDITS using the Save Edits button or the changes will be lost.

Process your ortho with the newly copied RetainedPhotos layer.