Hi Bob,
Interesting what you say about deleting images on a card. Does it damage the card?
Richard
It can, and Jonathon I meant never delete images on a card while in the camera as it can corrupt the card.
It usually won't but it can. It has happened to me.
There used to be a warning on the Sandisk site but now that it is Western Digital it seems to be gone.
Basically when you delete an image in the middle of a card it leaves a hole. If the next image is a different size, and they all are, the card is fragmented to some extent which will at best slow the card down.
I shoot to both cards and take one out to put in the computer so there is always another copy.