Thu 23-Aug-12 01:16 AM | edited Thu 23-Aug-12 01:17 AM by OnTERRYo
From the other thread, I know you are using a D90.
I believe what you want is the Viewfinder Grid Display. Check page 181 of your manual; it seems to be the d2: option of your menu. I haven't used it as yet.
And, to help with the images you have already, check page 221. It should allow you to rotate a copy of your original image in .025 degree increments, up to five degrees in total. And, again, I haven't tried it.
Hope this helps.
"The Nikon did the work; I just happened to be behind it at the time." TP