# Depth of Field: Calculator — Stopdown: aperture to infinity

> Stopdown: aperture to infinity (iPhone/iPad app by YURY KALESNIKAU.)

- Source: https://appshunter.io/ios/app/depth-of-field-calculator/id6809464736 (this page in markdown: same URL + `.md`)
- Developer: [YURY KALESNIKAU](https://appshunter.io/developer/1894939983)
- Category: Photo & Video, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 5 MB
- Languages: American English, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany), Greek and 21 more
- Released: 2026-10-01
- Data updated: 2026-11-06

## What is Depth of Field?

Stopdown draws the sharp zone instead of handing you a table of numbers.

Pick a camera, then set focal length, aperture and focus distance. The band redraws as you go: where sharpness begins, where it ends, how deep it runs, and how much of it falls in front of the focus point and how much behind. Hyperfocal distance stays on screen, so you can see where to focus to send sharpness off to infinity.

FREE
• Depth of field for any sensor — from full frame down to a phone
• Depth of field drawn to scale, with the numbers beside it
• Hyperfocal distance, and how much sharpness sits in front and how much behind
• Works offline. No account, no ads, no subscription

STOPDOWN PRO — ONE PURCHASE, NO SUBSCRIPTION
• Focus stacking planner: how many frames to shoot and at what step to cover the whole range
• Need a particular depth? We'll find the aperture for it. The same maths, run backwards
• Diffraction limit and field of view
• 372 camera bodies, each with its own circle of confusion
• Saved presets: your kit in one tap
• Manual circle of confusion for large prints, 4K and 8K

WHY THE NUMBERS CAN BE TRUSTED
We use the standard circle of confusion: the sensor diagonal divided by 1442. That is the criterion for an 8×10″ print that looks sharp enough at arm's length. Settings has an Accuracy section — the formula, the assumptions, and the point where the model stops holding. You can check the app instead of taking it on faith.

PRIVACY
Every calculation happens on your device. It needs neither an account nor a connection to work. Anonymous usage statistics show us where people get stuck. You can switch them off in Settings.

iPhone only. Metric and imperial units, written the way your region writes them.

Terms of Use (EULA): https://sites.google.com/view/stopdown-tos
Privacy Policy: https://sites.google.com/view/stopdown-pp

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Stopdown Pro | $6.99 | one-time |


## Is Depth of Field safe?

Not enough ratings yet to assess Depth of Field.

## Is Depth of Field legit?

Depth of Field: Calculator has limited verification signals. The AppsHunter Legitimacy Score for Depth of Field is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.4 — 2026-11-03

Large format: the aperture scale now runs to f/64, and a manual blur limit can go up to 0.2 mm — enough for 4×5 and 6×17.
Advanced and Focus stacking show a manual blur limit next to the camera, so it's clear what the numbers are based on.
The diffraction limit reads the way a camera shows it: f/22, not f/22.4. When it lies beyond the scale, it's no longer drawn at the edge.
Section titles now stand apart from the rows below them.

### 1.0.3 — 2026-10-22

Housekeeping under the hood. Nothing changes on screen.

### 1.0.2 — 2026-10-20

• Now in Chinese, Thai, Hindi and Portuguese (Portugal)
• Smoother wording in every language
• Field of view shows the distance unit correctly

### 1.0.1 — 2026-10-16

• Buying Stopdown Pro now completes properly, so the App Store no longer asks about a purchase you have already made.
• Small fixes under the hood.

### 1.0 — 2026-10-01

No release notes.

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## More apps by YURY KALESNIKAU

- [Will: Gym Workout Tracker](https://appshunter.io/ios/app/will-gym-workout-tracker/id6762648565)

All apps by YURY KALESNIKAU: https://appshunter.io/developer/1894939983

## Related topics

[depth of field](https://appshunter.io/ios/topics/depth-of-field) · [depth eye](https://appshunter.io/ios/topics/depth-eye) · [depth of field calculator](https://appshunter.io/ios/topics/depth-of-field-calculator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*