I have a problem with my D90 'recording' a spot, blemish, call it what you will, in landscsape format only. Strange, I know, but i do not see the spot in portrait images. See the circled area in pic below.
This does not show on all images due to backgrounds, aperture, etc. When I do notice it of course, I have to resort to PP action and that generally does the job. It is a nuicance though, when I have taken many similar shots and have to manipulate each one.
My question is, does anyone know why this should only occur in landscape, and secondly, will an air rocket or similar dislodge the offending blemish?
All and any help much appreciated.