Hey folks I would like very much to use my Hasselblad 500C/M as a pinhole camera. I came across a cap that I was considering getting and would like some advice. Has anyone tried this particular cap? Does it for any reason hinder the functionality of the camera body or film back? Does it even fit a 500C/M body?
Here is a link to the model in questions. Also I would be up for any other suggestions as well.

http://www.pinholeresource.com/shop/...id=76&vmcchk=1



Thanks