PocketOP

PocketOP turns your iPhone into a broadcast operator's viewfinder. Point it at any location and see two real-time field-of-view brackets on the live camera feed: one for the wide end of a lens, one for the tele end.

No mounting hardware. No guesswork. Just point and see whether the lens reaches far enough and goes wide enough.

Built for broadcast lenses, PTZ cameras, and cine zooms
The database covers professional broadcast lenses, PTZ cameras, and cine zoom lenses for Super 35, Full Frame, and Large Format productions. Every entry uses manufacturer-published HFOV values, not focal length conversions. For the full and current database, visit pocketop.app/database.

Database updates without App Store review
New lenses and cameras land via remote update. Request a missing lens from inside the app and it can appear within days.

Fine-tune against real equipment
A guided calibration workflow lets you adjust the overlay per lens with live feedback and a +/-25% offset range for parallax compensation.

What you get for free
Four broadcast lenses (Canon CJ14ex4.3B, Canon HJ40ex14B, Fujinon XA20sx8.5B, Fujinon UA80x9) and one PTZ camera (Panasonic AW-UE40), fully functional with all features. Upgrade to Pro to unlock the complete database with continuous updates.

Works best with
PocketOP uses your iPhone's rear cameras as a reference viewfinder. iPhones with multiple rear lenses (Ultra Wide, Wide, Telephoto) give you more flexibility when matching broadcast focal lengths. iPhone 14 Pro and newer recommended.

Pro subscription: EUR 19.99/year.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/