3 Minutes
Imagine reaching a distant subject without the jagged edges of heavy digital zoom. That’s the sell behind SANDMARC’s new Tetraprism 72mm — a telephoto add-on built to push Apple’s latest hardware where on-board optics can’t.
It’s substantial. Heavy, even, for a smartphone accessory: 180 grams, 70mm tall, 40.5mm front diameter and a 17mm threaded mount that hints at camera-lens lineage rather than a clip-on toy. Hold it and you get the feel of a compact camera lens that just happens to marry to an iPhone.
SANDMARC tuned the optics specifically for the quad-prism telephoto system expected on the iPhone 17 Pro line. Pair the Tetraprism 72mm with that system and the company says you can reach up to 24x zoom by optical magnification. Short sentence. Big jump.
Older iPhones aren’t left out. On iPhone 16 Pro models and the iPhone 15 Pro Max, SANDMARC advertises up to 15x hybrid zoom — a mix of optics and clever processing. Want reach? You won’t always need to rely on crops and software to pull subjects closer.
The aim here is image quality at distance. Instead of leaning on aggressive digital cropping, the lens uses multi-element glass with multi-layer coatings to curb flare and preserve color. Optical compression is also part of the pitch, helping isolate a subject from its background so portraits and wildlife shots feel more natural.
The design is modular. The lens clips into a dedicated iPhone lens case and drops into SANDMARC’s ecosystem of filters and accessories. Wildlife, live events, distant landscapes — those are the use cases the brand highlights. Practical, and quick to swap if you need different optics on the fly.
There’s competition on the horizon. Some Chinese makers already ship teleconverter sets with their flagship phones — the Xiaomi 17 Ultra, for example, pairs with a 4.3x teleconverter. Apple, by contrast, rarely ships detachable optics as part of its lineup, so third-party makers will keep filling the hardware gap.
Pairing SANDMARC's Tetraprism 72mm with an iPhone 17 Pro pushes optical reach to 24x, offering a real alternative to heavy cropping.
So will you trade pocket convenience for a lens that looks and feels like proper glass? If getting closer without losing fidelity matters, this accessory might be the nudge your phone photography setup needs.
Source: gizmochina
Leave a Comment