Quote:Most light leaks are in the heads of some users.There is no "light leak". There is something that causes strong reflections in the mirror box, when that area is hit with light. It causes strong veiling and something blocks that veiling too, creating bands without the veiling.
Look at the review of the D750 at dpreview.
No word about a light leak. My D750 shows also no light leak.
Meanwhile Nikon steps ahead with one of the best DSLRs.
Whether your D750 can show this too can only be figured out by CORRECTLY testing it under the circumstances the phenomenon would appear.
That DPreview did not test for that is normal, and so that DPReview does not mention it is normal too. That you think it is a light leak, shows that you have not tried to understand the issue, and shows you have not actually tried to see if it appears with your D750 and with which lenses.
Of course, in most circumstances the issue is no issue, so the chances that many photographers will not encounter it are pretty high.