# Shutter-Speed — The shutter speed tester app

> iPhone app to test analog camera shutter speeds, with optional light sensor accessory. (iPhone/iPad app by Filmomat GmbH.)

- Source: https://appshunter.io/ios/app/shutter-speed/id560154244 (this page in markdown: same URL + `.md`)
- Developer: [Filmomat GmbH](https://appshunter.io/developer/455575975)
- Category: Utilities, Photo & Video
- Price: Free
- Rating: 3.50/5 from 22 App Store ratings · 68 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 6 MB
- Languages: American English
- Released: 2012-09-20
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/shutter-speed/id560154244/reviews.md

## What is Shutter?

With Shutter-Speed you can test the shutter speeds of your analog cameras just with your iPhone. Please note that the full potential of this App is only reached if you use it in combination with the PhotoPlug. The PhotoPlug is an optical sensor which connects to the headphone-jack of your iPhone and enables you to measure the actual amount of light passing through the camera shutter. Please visit www.filmomat.eu for detailed information and for ordering the PhotoPlug.


How-To:

Point the camera towards a bright light source. Place the PhotoPlug closely behind the camera shutter. Start the measurement and release the shutter. The App automatically analyzes the signal and calculates the shutter speed. All measurement values can be stored into a handy table. Multiple different cameras/lenses can be stored. A correction factor is calculated, which you can use to compensate a faulty shutter speed. For example, if you measure the 1/60s and it turns out to be 1/50s, the App will tell you that the shutter-speed is 1/3 stops too long. This gives rise to a correction factor of -1, indicating that you have to close your aperture by 1/3 f-stop to get a correct exposure.

Without PhotoPlug, the App will record the sound of the camera shutter and calculate the shutter speed from that. Please note that this procedure will only give useable results for speeds  below 1/30sec. With the PhotoPlug, shutter speeds up to 1/500sec can be measured.

## Key features

- Test analog camera shutter speeds
- Use with PhotoPlug accessory for light measurement
- Analyze shutter sound for speeds below 1/30sec
- Store measurement values in a table
- Manage multiple cameras and lenses
- Calculate correction factors for faulty shutters

## Recent user reviews (10 of 68)

All indexed reviews: https://appshunter.io/ios/app/shutter-speed/id560154244/reviews.md

### 1/5 — Wrong

*2026-03-05, version 2.1*

Hopeless it’s so far wrong it’s a joke 7-18 stops out not wrong

### 3/5 — App war mal echt gut - Sensor am modernen iPhone?

*2025-11-06*

Ich habe mir vor längerer Zeit die App gekauft und sie funktioniert soweit auch gut, allerdings ist der teure Sensor mit modernen Geräten nicht mehr zu gebrauchen.
Jetzt habe ich eine App, bei der das Mikrofon zu empfindlich und der teure Sensor nicht mehr ansteckbar ist.
iPhone 13 Pro

### 5/5 — A must for camera repair enthusiasts

*2025-02-07, version 2.1*

Kudos for updating this old apps after all these years. I was using it, back in the days, on my iphone 3GS and it was sub-optimal due in great part to the tiny screen. Now, with the peaks auto-detection, it is really good. It helped me a great deal in adjusting the shutter speeds of my Syncro-Conpur. If I may make a suggestion, it would be nice if we could see the milliseconds in the camera profile.

### 1/5 — Ruined it

*2024-07-02, version 2.1*

It no longer records shutter speeds longer than 1/2 second correctly, and the interface is now far less intuitive. You’ve crippled a very capable app. Why? Update in response to developer: when I attempt to measure 1 second, it gives a nonsense value, usually in the range of 1/400th to 1/600th second. That’s what I mean when I say it no longer works for 1 second exposures.
Developer responds to say they don’t understand my problem, very dismissive.

### 5/5 — Top Update 👍🏼

*2024-07-02*

Man kann jetzt auch manuell die Grafik kleiner oder größer machen und auch die Markierungen nach dem automatischen Mess-Ergebnis korrigieren.

Somit ist die App mit dem Photo Plug Zubehör jetzt absolut top. 

Was noch fehlt, ist die 1000 Verschlusszeit. Vielleicht kommt das ja noch. Für die Dokumentation beim abspeichern wäre das wichtig.

### 5/5 — Great app

*2024-05-14*

I really appreciate the update; used with the photoplug this is a really useful portable testing system.

**Developer response:** Thanks for the feedback! Glad to hear you like the system.

### 1/5 — Version 2 noch sehr buggy

*2024-03-28*

Nach jahrelangem Gebrauch der Version 1.4 ist die aktuelle Version für mich eine Enttäuschung. Verschlusszeitrn können nicht mehr zuverlässig gemessen werden.
Liebe Entwickler, bitte bessert nach.

**Developer response:** Wenn Sie mir mitteilen würden, was genau nicht mehr richtig funktioniert, könnten wir vielleicht auch eine konstruktive Lösung finden. Nur so als Idee :)

### 1/5 — Ruined it

*2024-03-28*

Why did you change how this works??! It no longer records shutter speeds longer than 1/2 second, and the interface is now far less intuitive. You’ve crippled a very capable app. Why? Update in response to developer: when I attempt to measure 1 second, it gives a nonsense value, usually in the range of 1/400th to 1/600th second. That’s what I mean when I say it no longer works for 1 second exposures.

**Developer response:** You can still zoom the signal and adjust it manually, if you are not satisfied with the automatic detection. The automatic detection is optimized for use with the PhotoPlug. I just added a new feature, I did not remove any functionality of the old version.

### 5/5 — Viel besser mit neuem Update

*2024-03-28*

Hat davor schon super funktioniert, aber mit der automatischen Erkennung klappt es jetzt noch deutlich schneller und einfacher!

### 2/5 — Disappointed in 2.0 update

*2024-03-25, version 2.0*

I feel like the automatic signal analysis and peak detection makes this version less than reliable than the old version. It is always dicey using an LED light source since LED light output is not constant, but I did find one that I was able to use until this update. Also, the zooming of the waveform is extremely inconsistent and I find myself fighting the app to get it to zoom in and out. Overall the old version worked better for me.

## Frequently asked questions about Shutter

### What does the Shutter-Speed app do?

The Shutter-Speed app allows you to test the shutter speeds of your analog cameras using your iPhone. It can analyze the sound of the shutter for speeds below 1/30sec or use a PhotoPlug accessory for more accurate light measurements up to 1/500sec.

### How do I get the most accurate shutter speed measurements?

For the most accurate measurements, it is recommended to use the app in combination with the PhotoPlug accessory. This optical sensor connects to your iPhone's headphone jack and measures the light passing through the shutter.

### Is the PhotoPlug accessory included with the app?

No, the PhotoPlug accessory is not included with the app. It is a separate purchase. You can find more information and order it from www.filmomat.eu.

### Can I use the app without the PhotoPlug?

Yes, you can use the app without the PhotoPlug. In this mode, the app will record the sound of the camera shutter and calculate the shutter speed. However, this method is only reliable for speeds below 1/30sec.

### What kind of information does the app provide about shutter speed accuracy?

The app analyzes the measured shutter speed and provides a correction factor if the shutter is faulty. For example, it can tell you if your shutter speed is too long or too short, and by how much in terms of f-stops, allowing you to compensate for accurate exposure.

## Version history (last 5 releases)

### 2.1 — 2024-04-05

- Fixed overlapping layout with Old/New Shutterspeed-Button.
- Added additional decimal digit to measured time (e.g. 1/8.2 instead of 1/8) for more accuracy.

### 2.0 — 2024-03-20

- Overall design update and clean-up.
- Automatic signal analysis and peak detection.
- Improved signal visualization.
- Bug fixes.
- Improved iPad compatibility.

### 1.4 — 2017-04-23

This app has been updated by Apple to display the Apple Watch app icon.

Updated AppStore description

### 1.3 — 2017-04-20

- Improved shutter-speed table for viewing the data
- small design changes
- 64 Bit support

### 1.2.8 — 2014-03-06

Bug Fix with iPhone 5

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## More apps by Filmomat GmbH

- [SmartConvert Live](https://appshunter.io/ios/app/smartconvert-live/id6477547036)

All apps by Filmomat GmbH: https://appshunter.io/developer/455575975

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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 2026-08-24.*