eBay seller cam.plus' new offering, this one is a completely new adapter. It also
sports an AF Confirmation chip by GBP 19, which is a very reasonable price.
It resembles Y/C->EF adaptrer, but much thinner base metal, which makes
the most of Prakticars to focus infinity easily, but does not have secure lens
mount stopper. Although you can tighten it to prevent falling off from adapter,
for some CJZ made lenses are too loose to mount to this adapter, be warned.
But this might be a good thing, you can mount/dismount the lens without
taking the whole adapter and lens together from your Canon (d)SLR camera.