Comparison

f8 Lens Toolkit vs PocketOP

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

f8 Lens Toolkit

This app provides photographers and cinematographers with essential tools for optical calculations. It offers features like depth of field calculation, field of view determination, and lens matching for various camera formats. It's designed to be an indispensable reference tool for professionals and students alike.

Highlights
  • Depth of Field & Hyperfocal Distance Calculator
  • Field of View Calculator
  • Lens Matcher: Equivalent Focal Length & F-Stop
  • Camera Sensor Comparison Tool
  • Lens Coverage Tool
  • Extensive camera and lens database
  • Supports anamorphic shooting and Speedboosters
Features
Read full description

f8 is the fastest and easiest tool for all photographic calculations: Effortlessly find corresponding focal lengths & apertures for different formats, calculate depth of field (DOF), and find field of view for any camera and lens. The sensor comparison and lens coverage tool make this app complete. ◈◈◈ Get professional-grade features & the most intuitive user-interface in its class ◈◈◈ No matter if you are a seasoned pro or a film/photography student, f8 has got you covered. It’s packed with the tools you need and highly customizable to deliver precise calculations for any setup imaginable. It has been proven to be an indispensable tool on any shoot. f8 comes with: • Depth of Field & Hyperfocal Distance Calculator • Field of View Calculator • Lens Matcher: Equivalent Focal Length & F-Stop • Camera Sensor Comparison Tool • Lens Coverage Tool • Thousands of cameras & lenses included • Close Focus & Aperture data for most lenses • Supports anamorphic shooting & Metabones Speedboosters f8 is the perfect companion app and reference tool for Photographers, Cinematographers, Camera Operators, Camera Assistants (1.AC) & VFX Supervisors. ◈◈◈ Download f8 now and have a precise optical toolkit at your fingertips ◈◈◈ ◆ CINE CAMERAS ◆ AJA Cion ARRI Alexa 35, Alexa 65, Alexa Classic, Alexa LF, Alexa Mini, Alexa Mini LF, Alexa SXT, Alexa XT, Amira, D-21 Blackmagic Cinema Camera, Micro Cinema Camera, Micro Studio Camera 4K, Pocket Cinema Camera, Pocket Cinema Camera 4K, Pocket Cinema Camera 6K, Pocket Cinema Camera 6K Pro, Production Camera 4K, Studio Camera 4K, Studio Camera HD, URSA, URSA (Broadcast), URSA 4.6K, URSA Mini 4.6K, URSA Mini 4K, URSA Mini Pro, URSA Mini Pro 12K, URSA Mini Pro 4.6K G2 Canon C100, C100 Mark II, C200, C300, C300 Mark II, C300 Mark III, C500, C500 Mark II, C70, C700 DJI Zenmuse X7 Film 16mm, 35mm, 65mm/70mm, 8mm Freefly Systems Wave Generic Broadcast Ikonoskop A-cam dII Kinefinity KineMAX, KineMini, Mavo, Mavo Edge, Mavo LF, TERRA Panasonic AF101, BGH1, EVA1, HDX 900, VariCam 35, VariCam LT Panavision DXL, DXL2, Genesis Phantom 65, Flex, Flex4K, HD GOLD, Miro LC321S, v2640 ONYX, VEO4K-PL PS-CAM X35 RED Dragon-X, Epic Dragon, Epic-W (Helium), Epic-X, Gemini, Komodo, Monstro-VV, One, Ranger (Gemini), Ranger (Helium), Ranger (Monstro), Raven, Scarlet-W (Dragon), Scarlet-X, Weapon (Dragon-VV), Weapon (Helium) Silicon Imaging SI-2K Sony F23, F3, F35, F5, F55, F65, F900, FS100, FS5, FS5 Mark II, FS7, FS7 Mark II, FS700, FX3, FX6, FX9, HDC-1500R, Venice Weisscam HS-2 Z CAM E2, E2-F6, E2-F8, E2-M4, E2-S6, E2G ◆ PHOTO CAMERAS ◆ Canon 1000D/XS, 100D, 10D, 1100D/T3, 1200D/T5, 1300D/T6, 1D, 1D C, 1D Mark II, 1D Mark III, 1D Mark IV, 1D X, 1D X Mark II, 1D X Mark III, 1Ds, 1Ds Mark II, 1Ds Mark III, 200D/SL2, 20D, 30D, 350D/XT, 400D/XTi, 40D, 450D/XSi, 500D/T1i, 50D, 550D/T2i, 5D, 5D Mark II, 5D Mark III, 5D Mark IV, 5DS, 600D/T3i, 60D, 650D/T4i, 6D, 6D Mark II, 700D/T5i, 70D, 750D/T6i, 760D/T6s, 77D, 7D, 7D Mark II, 800D/T7i, 80D, 850D/T8i, 90D, M50, R, R5, R6, Ra, RP Film (Still) 35mm (135), APS, Large Format, Medium Format, XPan Fujifilm GFX 100, GFX 100S, GFX 50R, GFX 50S, X-A7, X-H1, X-Pro2, X-Pro3, X-S10, X-T2, X-T200, X-T3, X-T4, X100V Hasselblad Digital Medium Format Leica CL, M10/M10-R, M8/M8.2, M9/M9-P, S, S2, SL, SL2, SL2-S Mamiya Leaf Credo Series Nikon D1, D100, D1H, D1x, D200, D2H, D2Hs, D2x, D3, D300, D3000, D300s, D3100, D3200, D3300, D3400, D3s, D3x, D4, D40, D40X, D4s, D50, D500, D5000, D5100, D5300, D5500, D5600, D60, D600, D610, D70, D700, D7000, D70s, D7100, D7200, D750, D7500, D80, D800, D810, D850, D90, DF, Z50, Z6, Z7 Olympus E Series Panasonic GH1, GH2, GH3, GH4, GH5, GH5S, S1, S1H, S1R, S5 Pentax 645D, 645Z, K Series Phase One Achromatic+, IQ Series, P 30+, P 40+, P 45+, P 65+ Sigma fp, fp L, SD1, SD15 Sony A290, A390, A450, A580, A6000, A6300, A6500, A6600, A7 III, A7C, A7r II, A7r III, A7r IV, A7s, A7s II, A7s III, A850, A9, A9 II, A900, A99, SLT-A37K, SLT-A57, SLT-A65, SLT-A77

About

PocketOP

This app acts as a broadcast operator's viewfinder, allowing users to visualize field-of-view brackets for wide and telephoto lens ends directly on their iPhone's live camera feed. It supports professional broadcast lenses, PTZ cameras, and cine zooms with a continuously updated database.

Highlights
  • Real-time field-of-view brackets
  • Broadcast lens database
  • PTZ camera support
  • Cine zoom lens compatibility
  • Guided calibration workflow
  • Remote database updates
Read full description

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/

Screenshots

f8 Lens Toolkit4 screens
PocketOP4 screens

Verdict

The call

The clearest difference is price: PocketOP at Free against f8 Lens Toolkit's $9.99. PocketOP also leads on update cadence (every 2 weeks vs every 2 months) and review sentiment (100% vs 80%). f8 Lens Toolkit's advantage is in-app purchases (none vs 1) and ratings volume (26 vs 1). On rating, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

PocketOP is free to download; f8 Lens Toolkit costs $9.99 up front. PocketOP sells 1 in-app purchase, starting at $17.99 per year. f8 Lens Toolkit asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for f8 Lens Toolkit against 5.0 for PocketOP. That said, the two scores are not equally well evidenced: f8 Lens Toolkit has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 80% of f8 Lens Toolkit's written reviews are positive against 100% of PocketOP's.

UpkeepUpdate frequency

f8 Lens Toolkit ships an update every 2 months, PocketOP every 2 weeks. The most recent releases landed on October 26, 2026 and September 30, 2026 respectively.

Scorecard6 real differences · 4 level
f8 Lens Toolkit versus PocketOP: the parameters behind the verdict, then further details
Parameterf8 Lens ToolkitPocketOP
Price$9.99Free — better
Rating4.9 (26 ratings)5.0 (1 ratings) — better
Positive reviews79.5% of reviews100.0% of reviews — better
Number of ratings26 — better1
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size4 MB6 MB
Age rating4+4+
DeveloperCadrage GmbHMartijn van der Linden

Customer experience

f8 Lens Toolkit

All ratings26 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews44 reviews
Positive79.5%
Neutral2.3%
Negative18.2%

PocketOP

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

f8 Lens Toolkit

No in-app purchases

1 purchases

PocketOP

Subscriptions1
  • PocketOP Pro$17.991 Year

Questions

Is f8 Lens Toolkit free?
f8 Lens Toolkit costs $9.99, with no in-app purchases.
Is PocketOP free?
PocketOP is free to download, with in-app purchases available.
Which has better reviews, f8 Lens Toolkit or PocketOP?
PocketOP is rated higher. f8 Lens Toolkit averages 4.9 out of 5 from 26 ratings, while PocketOP averages 5.0 from 1 ratings.
Do f8 Lens Toolkit or PocketOP have ads?
Neither f8 Lens Toolkit nor PocketOP shows ads.
Which is updated more often, f8 Lens Toolkit or PocketOP?
f8 Lens Toolkit ships an update every 2 months, and PocketOP every 2 weeks. Most recently, f8 Lens Toolkit was updated on October 26, 2026 and PocketOP on September 30, 2026.

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