DCIM file

I have a Sony Cyber shot camera and when I connect to my imac and when I click the untitled icon I get a DCIM file listing the just taken photos plus a sub-file showing some previous photos. However, the previous photos are from a year ago and not even recent ones. I know I deleted these photos from my camera so why are these particular photos showing up in the DCIM sub-file? Anyway to prevent this? I know I can delete these photos in the sub-file without effecting them in iphoto but I still would like to know what gives.

Thanks in advance.

via ehMac.ca http://ift.tt/2l9kQwX