I believe that many people get irritated by claims that seem unscientific, and will make efforts to invalidate non-traditional views without bothering to be scientific themselves. I have yet to come across a serious study that shows that moisture is the principal variable in Kirlian photography, yet I have come across several careful studies that show just the opposite. No specific studies are ever mentioned, nor are the studies that show otherwise ever properly rebuked. It is my belief that those who claim this is so are wholly uninformed, and are merely spreading their favorite rumor, in the hopes that somehow the world will become more rational. New technologies are often irrationally bashed when they don't fit into established frames of reference.
Kirlian photography generates a lot of interest.
I think you will find that a great many people will be interested in having their Kirlian photograph taken. Yes, all these objects can be photographed. A ground needs to be attached from the camera to the objects. With liquids the ground wire needs to be dipped in the water droplet before the unit is turned on.