Up until recently i was very happily using zeiss 50mm on my canon dslr. I was using an adapter with a chip for focus confirmation. It worked and I was happy. Then one day when I was handling the adapter the chip fell off. Spent an evening trying to fix this to no avail. Oh well I thought I will just rely on my eyes, but when I took a picture the mirror locked up. So I bought another adapter off ebay but the camera doesn't seem to recognise the chip as there is no focus options and the focus light does't not come on. I would be happy to use it like this and just do with out the focus confirmation except for one thing that bothers me. When I turn the camera off the the screen at the top and the back do not go out until I either dismount the lens or open the door t the cf card input. My question is do I risk damaging the camera if i continue to use the adapter? I have another adapter coming in the post, but I am beginnning to lose faith in them. The companys that sell them seem to go under different aliases on ebay and all seem to sell the same product and have very limited customer services! Thanks to anyone who can shed some light on the matter.