After I have deleted the files from my CF card, it does not take effect in my camera (Canon 400D). I need to format it each time to have an empty card.
For example, let's say the capacity of an empty card is 100 photos.
I take 80 photos so I have free space for 20 photos more.
I transfer the 80 photos to com, then delete them from the card.
When I insert the card into my camera, it shows that I can take 20 more photos instead of 100.
It is not only showing it but it really is true. When I take 20 more photos, it will tell me the card is full, although I have deleted those other photos.
It's really strange and I don't understand.
So each time I delete the photos from my card, I need to format the card, then it will show an empty card with full capacity.
I think this problem has to do with the camera because using another camera on the same computer, I don't have this problem.
Also, I have 3 CF cards and all 3 display this problem.
Can't be that all 3 cards have the same strange problem, right?
So I think it is the camera messing up.
Any idea what's causing and how to fix?