There would be nothing visual when we take the photographs, but we knew from experience that 'ectomist' was always around us, with supernatural beings using that medium to manifest.
In this particular image can yo see the make figure that has climbed over hte fence?
You can see the right arm and the right shoulder; the torso and the impression of legs - one leg touching the top of the fence (With no foot) - and the right leg seen stretching as if this being has climbed the fence.
I may not have described it perfectly, but look for yourself ... there is a human form in this photograph!