Canon EF-M body + Praktica B lens
COMPATIBLE IN THEORY
Why are there no suitable adapters is a different question.
The flange focal depth of the EOS-M is a mere 18mm, while the SLR PB lenses boasts 44.4mm. Still, there are no adapters available.The flange focal depth of the Praktica B bayonet lock system which was introduced in 1978 (bayonet or PB mount) is often specified 44mm incorrectly, while it's actually 44.4mm.
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