PocketOP
Broadcast Lens & PTZ FOV Tool
Only for iPhone
Free · In‑App Purchases
iPhone
Point your iPhone at any location and see whether a broadcast lens reaches far enough and goes wide enough. No hardware, no guesswork.
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.
PocketOP is also a fast field reference: search the full database and tap any lens or camera for its complete specifications.
See the shot with a live zoom preview
Switch from the field-of-view brackets to a live zoom: PocketOP digitally frames what a given lens would see on your camera feed and moves to the sharpest rear lens for you. A fast way to check whether a focal length gives you the shot before you rig anything.
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/
This version adds a live lens zoom preview. No new permissions or entitlements are required.
What changed in 1.3.0:
- A live lens zoom preview on the camera feed: switch between the field-of-view outline and a live zoom that previews each focal length and moves to the sharpest rear lens automatically.
- More detailed screenshot annotations.
- Additional improvements and fixes.
General notes:
- No login, no account, and no external server calls for core functionality. The database loads from CDN on first launch and is bundled in the app as a fallback.
- The subscription (Pro, annual) unlocks the full database and the copy-spec feature. The free tier (four broadcast lenses and one PTZ camera) is fully functional, so the paywall and Pro features can be reached and tested directly.
The developer, Martijn van der Linden, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Martijn van der Linden
- Size
- 5.9 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- PocketOP Pro $17.99
- Copyright
- © 2026 Direct Images
