Opticron QR Plate used pentax fit lenses but the optical character is

but the optical character is why photographers keep this lens

Ultracompact 2

The integrated focus motor makes it autofocus-compatible with entry-level Nikon DSLRs (D3xxx

The world’s leading combo in optical and ergonomical performance

Opticron QR Plate used pentax fit lenses but the optical character isA replacement or additional Opticron QR (Quick Release) plate. Screws onto your spotting scope or binocular tripod adapter, allowing it to click into an Opticron QR shoe on your tripod head. Useful if you have multiple scopes and want a dedicated plate on each, so you can swap between them without unscrewing. Also serves as a spare if you lose or damage your original plate.