Sorry for the big delay. This thread got lost and I forgot I even created it. Yes I'm senile okay and old. I don't remember what I forget
Is there any chance at all that your friend could have done some manipulation, EVP?
No Jim, I don't think so, I've known her for 8 years and we often photograph and investigate together. She knows her way around PS but she's a genuine person.
So...are you going to tell us what you think this is or do you know?.
My apologies Lorac for the latency.
If you sample in PS, the area in question, is the darkest value in the overall scene. She was using a Pentax Kx which is an interchangeable lens crop sensor camera. I suspect that some contaminant found it's way (fiber or thread from a lens change) onto the mirror/sensor and could very well have fallen or flipped off once the mirror was drawn up when the image was made. Her immediate picture after did not have the same contaminant on it.
It's so dark because it's blocking direct light inside the camera. I have my sensor/mirror/focusing screen cleaned a couple of times a year. Contaminants are inevitable if you change lenses and dust can even find its way inside a lens from the breathing during the zoom.
My new habit is to ensure the body cap/lens cap is inserted into my camera bag inside a plastic bag. I have found on a number of occasions when you put either cap in your pocket, it can pick up lint, thread or fiber particulate from inside your pant pocket. It sticks really easy because the caps are plastic and develop a static charge allowing them to cling.
That's my take anyways.
Edited by EVP, 06 September 2017 - 12:02 PM.