Photo Rig Binocular Smartphone Adapter

The Photo Rig fits most binocular and monocular eyepieces roughly in the 20–50mm range (sources list 24–46mm and 30–50mm as well); it can be too small for some large spotting-scope eyepieces around 55–60mm.

Slide your phone into the stepped‑gripper, spring‑loaded clamp, attach the adapter over the eyepiece, then fine‑tune alignment to minimize vignette; it supports photo, video, and cinematic modes and can be used one‑handed.

The Photo Rig is tripod‑compatible and works best with binoculars and monoculars; it may not align well or be ideal for heavy‑duty spotting scopes with very large eyepieces.