Hi Dawn

Can the person be sure it is actually a ghost/discarnate they have captured on photo?

There appears to be lots of anomalies caught on photo which people put down to ghost and when I look at the photo and evidence, it is actually nature spirit in origin.

We do actually have nature spirits that live in the house with us, just doing their job.

If it is ghost/discarnate, being concerned, would depend on the feelings that arise from it's presence. If the feeling is one of negativity and fear and problems are arising, then there may be cause for concern.
If it is a once off, and there are no discernible effects in the house or to the occupants, I would think there is no need for concern.

Ghosts/discarnates appear to frequently 'pop in and pass through'
as it were.

I hope this reply has been some benefit to you.

sunshine