Addressing the question about respect...I have been thinking about this a lot since the night I took pix in the cemetery, and got the one that looks like a head with a helmet coming out of the ground, next to the grave of a man that died in 1953. I was looking at the picture, and realized "I hate to have my picture taken, and if this were truly a picture of a ghost head, what if I invaded his space, what if he hated to have his picture taken, what if I was disrespecting everyone buried in the cemetery by waltzing in there after dark and trying to capture an image?" So I have not done that since, and will not. When I die, I do not think my feelings about being photographed will change.
One of the things I encourage is that you walk around a location first and let any ghosts/spirits that are there get used to you. I then suggest that you ASK for permission to take pictures. You can also say something like, I am going to take some pictures and would love to have you in them. Or If you would like your picture taken please stand by that big tree (or whatever you are going to take a picture of).
By not asking permission and just randomly snapping pictures is like being a paranormal paparazzo.
