Lens Simulator: Prospekt

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.