# LEE Filters - Stopper Exposure — The official exposure guide.

> Official exposure calculator and timer for LEE Stopper camera filters. (iPhone/iPad app by LEE Filters.)

- Source: https://appshunter.io/ios/app/lee-filters-stopper-exposure/id1105022698 (this page in markdown: same URL + `.md`)
- Developer: [LEE Filters](https://appshunter.io/developer/882232671)
- Category: Photo & Video, Utilities
- Price: Free
- Rating: 4.50/5 from 13 App Store ratings · 17 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 24 MB
- Languages: American English
- Released: 2016-04-27
- Data updated: 2026-08-18
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lee-filters-stopper-exposure/id1105022698/reviews.md

## What is LEE Filters?

This is the official exposure guide for photographers using LEE Filters range of Stopper long exposure camera filters.

It's designed to help you get the most from your Big, Little and Super Stopper filters - accurately calculating the precise exposure you require and offering a flexible timer for very long shutter speeds.

Tap the menu at the top to select your Stopper:
6 Stops = Little Stopper
10 Stops = Big Stopper
15 Stops = Super Stopper

Turn the left hand wheel to dial in your metered shutter speed (before you insert any filters) and read the adjusted exposure on the right hand wheel. 

The app converts a full range of shutter speeds in 1/3 stop increments.

Use the built-in countdown timer for any exposure over 5 seconds and see in a glance how long you have left. For very long exposures you’ll also get a reminder notification plus all countdowns finish with an alarm and a timestamp.

There’s also a handy User Guide and links to a variety of informative and inspirational web resources to support your Stopper photography.

## Key features

- Exposure calculation for Stopper filters
- Flexible long exposure timer
- Countdown notifications and alarms
- User guide access
- Web resource links

## Recent user reviews (10 of 17)

All indexed reviews: https://appshunter.io/ios/app/lee-filters-stopper-exposure/id1105022698/reviews.md

### 4/5 — Really intuitive

*2024-06-08*

Great application that is very easy to understand. I wish instead of 3 bottons for 6/10/15 stops it had a similar dial to adjust to any stop between 2-15 as it would add more versatility to an already great application.

### 3/5 — Could be better

*2022-11-13*

It is simple calculator with timer and nothing wrong about it but it could be better.
It doesn't make sense to take exposures beyond 30s with digital. Anything above that can be averaged in post without additional sensor noise.
Film however can be exposed for long time. It would be nice if we could add reciprocity failure factor, or even better if there were preconfigured film options.

### 5/5 — Awesome!

*2020-05-29*

I just bought the PolarPro filters and was surprised that there wasn’t an app to help go along with the filters. So I downloaded this one and it’s great!

### 5/5 — Excellent

*2019-05-30, version 1.4.2*

Exactly what I was looking for 👍👍

### 2/5 — Not enough

*2018-10-28, version 1.4.2*

For a large company like Lee, I would expect for this app to be able to calculate when you stack filters since that is what a lot of us do to get the correct results.

### 4/5 — Simple to use

*2018-07-27, version 1.4.2*

Great little app, only does one thing but it does it well. 

It’s an elegant design, the simple ones always are.  

One future feature request. Allow the user to enter the number of stops manually, not just via buttons. 

Keep the shortcuts for the Little, Big and Super Stoppers for a quick entry.

Can you add an Watch app, please?

### 5/5 — Simplicity is great

*2018-04-02*

I have always admire people who could simplify things. By this standard the author is great

### 5/5 — Extremely Helpful

*2017-10-27*

Quite the handy app when using ND filters. Even works with both my Cokin 10 & 6 stop filters.

### 4/5 — Elegant

*2017-08-24, version 1.4*

A simple app that works, nothing flashy, simple to use, with a timer to make life a little easier. BRILLIANT

### 5/5 — Simple to use

*2017-06-22, version 1.4*

Great app, really simple to use and I like the inclusion of the timer. Exposures seem to be pretty much spot on using the suggested exposure time.

## Frequently asked questions about LEE Filters

### What is LEE Filters Stopper Exposure used for?

LEE Filters Stopper Exposure is an official guide designed to help photographers accurately calculate exposure settings when using LEE Filters' range of Stopper long exposure camera filters, including the Little, Big, and Super Stopper.

### How does the exposure calculation work in LEE Filters Stopper Exposure?

You dial in your metered shutter speed before inserting filters using the left wheel, and the app displays the adjusted exposure on the right wheel, converting a full range of shutter speeds in 1/3 stop increments.

### Does LEE Filters Stopper Exposure have a timer?

Yes, it includes a built-in countdown timer for any exposure over 5 seconds. For very long exposures, it provides a reminder notification and finishes with an alarm and a timestamp.

### What Stopper filters are supported by LEE Filters Stopper Exposure?

The app supports the Little Stopper (6 Stops), Big Stopper (10 Stops), and Super Stopper (15 Stops) filters from LEE Filters.

### Is LEE Filters Stopper Exposure available on Android?

Based on the provided data, LEE Filters Stopper Exposure is supported on iPhone and iPad, but Android compatibility is not specified.

### How often is LEE Filters Stopper Exposure updated?

The app was last updated on October 30, 2017, with version 1.4.2. This indicates infrequent updates in recent years.

### What is the user rating for LEE Filters Stopper Exposure?

LEE Filters Stopper Exposure has a rating of 4.5 stars based on 13 ratings, suggesting generally positive user sentiment among its reviewers.

### Does LEE Filters Stopper Exposure contain advertisements?

No, LEE Filters Stopper Exposure is ad-free, as indicated by the 'hasAds' flag being false in the application data.

## Version history (last 5 releases)

### 1.4.2 — 2017-10-30

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

Minor fixes.

### 1.4.1 — 2017-10-26

Minor bug fixes.

### 1.4 — 2016-07-13

The countdown timer is now available for exposures of 5 seconds or more (rather than more than 30-seconds). This is to help users of certain specialist cameras which don't have electronically timed shutter speeds as long as 30 seconds.

### 1.2 — 2016-06-30

Minor bug fix.

### 1.1 — 2016-06-03

New settings menu:
> Now the app can be totally silent with independent sound on/off controls for the alarm and sound effects
> You can now choose from a selection of 6 different alarm sounds

## Apps similar to LEE Filters

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Drawing -All in One Photo Effects Crazy Cool Image Application with Emojis & Emoticons](https://appshunter.io/ios/app/drawing-all-in-one-photo-effects-crazy-cool-image-application-with-emojis-and-emoticons/id863120720) | — | $0.99 | Photo & Video |
| [foolcontrol](https://appshunter.io/ios/app/foolcontrol/id888231700) | 4.1 (19) | $99.99 | Photo & Video |
| [Video Rotation: Flip and rotate videos](https://appshunter.io/ios/app/video-rotation-flip-and-rotate-videos/id904379060) | 3.5 (10) | $0.99 | Photo & Video |
| [Denoise: AI Voice Cleanup](https://appshunter.io/ios/app/denoise-ai-voice-cleanup/id946423200) | 4.6 (13) | Free | Photo & Video |
| [MyGIF - GIF from Video!](https://appshunter.io/ios/app/mygif-gif-from-video/id912434220) | 4.4 (7) | Free | Photo & Video |
| [Light Magick](https://appshunter.io/ios/app/light-magick/id827111620) | 1.0 (1) | Free | Photo & Video |

## More apps by LEE Filters

- [LEE Swatch Book - Official](https://appshunter.io/ios/app/lee-swatch-book-official/id882232668)
- [LEE Diffusion Comparator](https://appshunter.io/ios/app/lee-diffusion-comparator/id1050979715)
- [LEE Filters - ProGlass IRND](https://appshunter.io/ios/app/lee-filters-proglass-irnd/id1232403966)

All apps by LEE Filters: https://appshunter.io/developer/882232671

## Related topics

[long exposure calculator](https://appshunter.io/ios/topics/long-exposure-calculator) · [nd filter calc](https://appshunter.io/ios/topics/nd-filter-calc) · [nd filter long exposure photo](https://appshunter.io/ios/topics/nd-filter-long-exposure-photo) · [lee diffusion comparator](https://appshunter.io/ios/topics/lee-diffusion-comparator)

---

*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 2026-08-18.*