Vintage lenses can be a great look but theuir mechanics can leave a lot to be desired. The biggest problem is usually a mount adapter on the back which adds wobble to lens any time you make a focus or iris adjustment. Typical mount conversion to PL are super expensive. EF conversions probably more rare but for some lenses there actually is a cheap simple fix ! If you like FD or OM glass there is a simple DIY kit to convert your lenses to solid EF mounts that don’t move around. Have a look !