Lens Simulator: Prospekt

See any lens from 14mm to 300mm on 50+ camera bodies — Canon, Sony, Nikon, Fuji, and more. Point your phone and know what you're buying.

Wondering what 85mm looks like on your Canon R7? Or how wide 24mm feels on a Fujifilm X-T5? Point your phone and see — instantly. Prospekt simulates any focal length on any camera body, live.

HOW IT WORKS

Choose a focal length from 14mm to 300mm, pick your camera body, and see exactly what that lens sees — in real time, through your iPhone. The field of view is 100% mathematically accurate.

Your iPhone automatically switches between its ultra-wide, wide, and telephoto cameras to give you the best image quality at every focal length. No guesswork. No approximations.

50+ CAMERA BODIES

Canon: R5 II, R6 III, R7, R10, R50, EOS R, 5D IV Sony: A1, A9 III, A7R V, A7 IV, A6700, ZV-E10 II Nikon: Z9, Z8, Z6 III, Zf, Z50 II Fujifilm: GFX 100 II, X-T5, X-H2S, X-S20 Panasonic: S5 IIX, GH7, G9 II OM System: OM-1 II, OM-5 Leica: M11, SL3, Q3 Hasselblad: X2D, 907X Pentax: K-1 III, K-3 III Sigma: fp L

Every major sensor format: Full Frame, APS-C (1.5x & 1.6x), Micro Four Thirds, and Medium Format.

WHO IT'S FOR

• Choosing between a 35mm and an 85mm? See the difference live • New to photography? Learn what focal lengths actually look like • Scouting a location? Preview your exact framing on the spot • Switching systems? See how crop factor changes your lenses

FEATURES

• Live viewfinder — 100% accurate field of view simulation • Scroll wheel with haptic snap at popular focal lengths • Full-frame equivalent display — always know your effective focal • 4 aspect ratios: 3:2, 4:3, 16:9, 1:1 • Photo capture with metadata watermark (focal length, crop factor, FF equivalent, aspect ratio) • Offline — no internet required • Landscape-optimized for maximum viewfinder size

SAVE & COMPARE

Capture snapshots with a built-in watermark showing your settings. Save to your photo library and compare focal lengths side by side.

One purchase. No subscriptions. No ads.