I recently purchased a 6x7 mlu with a strap attached. I then bought a hand grip, but cannot use it until I remove the strap. How is this done? I see no obvious way to remove the strap.

Andy

THERE IS NO INFO IN THE VIEWFINDER. THERE IS INFO IN THE MODE LCD SCREEN

This questions regards a Pentax 645. Manual says the battery must be replaced at an authorized repair shop

How do I know if the lithium battery needs to be replaced? I can't get the finder to give me a reading