I've been looking at some images on the net taken with this 6x6 pinhole camera. Very cool! For $98 I'm very int3erested in getting one, but have a few questions. Since I've never seen a pinhole negative how does it compare to a holga negative? I have a Holga and they can be rather sharp in the center then soften towards the edges. Also on the site it says the focal length is 1", or 25mm. Is that 25mm in 35mm terms or in 6x6? Because that is super wide for 6x6? And lastly, is it worth the upgrade to the deluxe version? It would be nice to have spirit level and certainly cable release, but how does it help with framing?