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About Quartet

14mm — Wide. Landscape drama, cinematic space. 35mm — Street. The classic reportage frame, natural and honest. 50mm — Standard. The human-eye view, no distortion. 85mm — Portrait. Compressed space and beautiful subject separation. HOW IT WORKS - A clean 2:3 viewfinder with Leica-style frame lines, so you compose deliberately. - Every shot is a real capture from a real lens — never a digital crop faked from one photo. - A focal length key is printed on every export: 14 WIDE · 35 STREET · 50 STANDARD · 85 PORTRAIT. SHARE OR STUDY - Story — a 9:16 contact sheet for Stories. - Feed — a clean 2:3 grid. - Save the composed frame to your photo library for reference or class material. Quartet works best on iPhone models with multiple rear cameras (iPhone 12 and later recommended) for true optical framing across all four focal lengths. Made by 2B Studio.

What’s new

Version 1.3 · Updated August 12, 2026

Quartet is one of a small line of tools from 2B Studio in London. You can now find our other apps under Settings → Made by 2B Studio.

App privacy

The developer, KUAN HUANG, reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

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