Ricoh BJ-11 brand_Chinon 8 Macro is a compact

8 Macro is a compact macro lens for Sony Alpha and Minolta Maxxum SLR cameras- it's not compatible with Sony Alpha mirrorless cameras unless you put it on an adapter (not included)

single-pin

Suitable for reflective or transparent materials

The Olympus E-410 is a compact Four Thirds (not Micro Four Thirds) DSLR camera compatible with Olympus E-mount lenses

it is literally a tube with a doublet at the end

Ricoh BJ-11 brand_Chinon 8 Macro is a compactRicoh BJ 11 battery charger for DB 110 batteries, used in Ricoh GR compact cameras. Connects via USB Type C (cable is not included) Image is for illustration purposes and actual charger may not be exactly as pictured.