Canon EF body + Praktica B lens
COMPATIBLE MF MA
Fortunately the flange focal depth allows conversion.
You can look them up here (don't mistake the EOS-M mirrorless for the EOS adapters):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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