The Sandmarc 48mm Tetraprism accessory doubles the optical reach of the compatible phone telephoto setup. I took it out for duck and landscape photographs, then reviewed the results in Lightroom.
Originally published on YouTube Feb 19, 2026.
Extra reach for distant subjects
I liked the compact size and secure threaded mounting. The added reach is most useful for subjects farther away. Close focus was limited in my use, so I would not choose it primarily for nearby portraits when the phone’s own telephoto camera already works well.
Use an app that selects the camera
I used Moment to select the intended camera and prevent the phone from switching around the attached lens. A grip or small tripod can also make the longer view easier to handle. The video demonstrates the case mount, an alternative clip, and filter options.
What the samples showed
The duck and landscape examples looked sharp to me, and I enjoyed editing them with my mobile preset. These are early field examples, with more testing still ahead at recording time. Sandmarc supplied the lens for review. The later 72mm review offers another option if you want even more reach.
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