# TrueDoF-Intro DoF Calculator

> Advanced depth of field calculator with diffraction effects. (iPhone/iPad app by George Douvos.)

- Source: https://appshunter.io/ios/app/truedof-intro-dof-calculator/id519600295 (this page in markdown: same URL + `.md`)
- Developer: [George Douvos](https://appshunter.io/developer/395931674)
- Category: Photo & Video, Utilities
- Price: Free
- Rating: 3.90/5 from 9 App Store ratings · 37 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 8 MB
- Languages: American English
- Released: 2012-04-24
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/truedof-intro-dof-calculator/id519600295/reviews.md

## What is TrueDoF?

An elegant little app to give a wee taste of the TrueDoF range of depth of field calculators.

TrueDoF-Intro shares with its sibling apps the same core features: A clean and clear interface, ease of use, real-time updating of output and, above all (but conveniently hidden under the hood, as it were), the most advanced depth of field algorithm you’ll find on the App Store.

The TrueDoF range is unique in that its calculations can take into account the effects of diffraction. This gives the user a MUCH MORE ACCURATE indication of how sharp the image will be. Of course, if you're not comfortable with this diffraction business, you can simply disable that feature and instead use the app as a traditional depth of field calculator. You'll retain all the fabulous ease of use features!

There's no need for long descriptions here — the app is free, so just play around with it. You'll find you'll never want to go back to the old ways of calculating depth of field.

And if you like this version, wait till you try TrueDoF-Pro! Check it out, and its HUGE list of features, here on the App Store.

## Key features

- Advanced depth of field algorithm
- Diffraction effect calculation
- Traditional DoF calculation option
- Clean and clear interface
- Real-time output updating

## Recent user reviews (10 of 37)

All indexed reviews: https://appshunter.io/ios/app/truedof-intro-dof-calculator/id519600295/reviews.md

### 5/5 — Perfect

*2023-09-09, version 3.0*

Simple. Useful. Accurate. Thank you.

### 5/5 — The most underrated tool in your bag

*2023-01-02, version 3.0*

Ignore the rules of hyperfocal distance at your peril. Whether you shoot film or digital you should be aware of the effects. This tool does a fantastic job of visualising the process and is a great aid in the field. For those who think this is a “waste of time”, “not necessary for digital or modern lenses”.. just carry on capturing your soft images, it’s your loss.

### 3/5 — Not so great

*2016-12-20, version 2.0*

Difference between black line distances doesn't agree with total on the bottom.

### 5/5 — Great app

*2016-11-16, version 2.0*

Wonderful little app.  Perfect for helping me on my journey to zone focusing.  I will be purchasing the paid app. The paid app lets one customize f-stops etc.  thanks.

### 5/5 — Great interface!

*2016-02-26, version 1.3*

Very slick. Easy. One thumb navigation.

### 2/5 — Does not work with small apertures

*2015-09-03, version 1.3*

Nice clean interface, not very graphical BUT the results are wrong. Try closing down aperture on 200mm lens and dof decreases in this app!

### 5/5 — My favourite

*2015-08-02, version 1.3*

Simple, clean intuitive interface. Very quick and easy to use between shots. Love the sliding graphics.

### 3/5 — Needs a few tweaks

*2015-07-18, version 1.3*

I like the visual indicators and I am okay with the idea of the shrinking DoF at smaller apertures. I want a readout of the slider settings (it could be in the slider legend area), "soft" stops on the sliders for common settings, and ability to tap and directly enter numeric values.

### 1/5 — Ph0to Ph1l

*2015-05-07, version 1.3*

Nice idea. I like the way the sliders show the DOF but it has bugs. At small apertures, DOF collapses to zero.

### 5/5 — Great app

*2014-12-23, version 1.3*

Helped me easily compare DoF between a point shoot I was about to purchase and my current DSLR.

## Frequently asked questions about TrueDoF

### What does TrueDoF-Intro do?

TrueDoF-Intro is a depth of field calculator that provides a taste of advanced calculations. It can account for the effects of diffraction, offering a more accurate indication of image sharpness compared to traditional methods.

### What are the key features of this app?

Key features include an advanced depth of field algorithm that can incorporate diffraction effects for increased accuracy. It also offers a traditional depth of field calculation mode, a clean and easy-to-use interface, and real-time updating of output values.

### Is this app free to use?

Yes, the app is completely free to use. There are no costs associated with downloading or using its core depth of field calculation features.

### Who would benefit from using this app?

This app is designed for photographers and videographers who want to understand and control their depth of field more precisely. It's particularly useful for those who are interested in the scientific accuracy of diffraction effects on image sharpness.

## Version history (last 5 releases)

### 3.0 — 2018-09-27

• The interface gets an even cleaner, more spacious look. Simply slide the pointers to set focus distance and aperture (the old slider “thumbs” are now gone). Note that you do not need to keep your finger on a pointer as you slide it — you can move your finger to the side as you slide, all the better to see where the pointer is pointing.
• There are all manner of minor changes, including a more elegant colour scheme.
• The app is compatible with iOS 12 and with the various new iPhone X models.

Do remember that this free, pared-down “Intro” version is designed to give a mere taste of the very much more capable “Pro” version. Check it out here on the App Store.

### 2.2 — 2017-11-02

Support for iPhone X

### 2.1 — 2017-01-22

A more pleasant colour scheme, plus several small interface tweaks.
Of course, all the new features of the last major upgrade are still there:
• You now have the option to include or exclude the effects of diffraction in the calculation of image sharpness.
• The analog distance scale and the numerical distance readouts are now nicely integrated for a more interactive feel.
• Distance units are changed directly on the main screen by tapping the m / ft button.
• Labels can be hidden, for a cleaner interface.
• Several info (help) buttons have been added.
And there are lots of little improvements.
Enjoy! If you like this free app, wait till you check out the "pro" version, TrueDoF-Pro!

### 2.0 — 2016-08-23

Completely rewritten, with a cleaner, more up-to-date look, and a more interactive feel.
A few notable improvements:
• You now have the option to include or exclude the effects of diffraction in the calculation of image sharpness.
• The analog distance scale and the numerical distance readouts are now nicely integrated.
• Distance units are changed directly on the main screen by tapping the m / ft button.
• Labels can be hidden, for a cleaner interface.
• Several info (help) buttons have been added.
And there are lots of little improvements.
Oh, and there's a new icon, and the file size is much smaller.
Enjoy! If you like this free app, wait till you check out the "pro" version, TrueDoF-Pro!

### 1.3 — 2013-09-19

iOS 7 compatibility.

The focal length selection wheel no longer free rotates after you stop pushing it.

Focal lengths to 1200 mm are now included.

## Apps similar to TrueDoF

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Depth of Field Master](https://appshunter.io/ios/app/depth-of-field-master/id6746701993) | 1.0 (1) | Free | Photo & Video |
| [Simple DoF Calculator](https://appshunter.io/ios/app/simple-dof-calculator/id301222730) | 4.6 (94) | Free | Photo & Video |
| [Photo Friend exposure and DoF](https://appshunter.io/ios/app/photo-friend-exposure-and-dof/id1198327295) | 4.1 (9) | Free | Photo & Video |
| [SetMyCamera](https://appshunter.io/ios/app/setmycamera/id670363905) | 4.4 (138) | Free | Photo & Video |
| [DoF Calculator](https://appshunter.io/ios/app/dof-calculator/id6742732770) | 4.7 (22) | Free | Photo & Video |
| [Photographer's companion](https://appshunter.io/ios/app/photographers-companion/id1509043422) | 3.0 (2) | Free | Photo & Video |

## More apps by George Douvos

- [OptimumCS](https://appshunter.io/ios/app/optimumcs/id395931671)
- [OptimumCS-Pro](https://appshunter.io/ios/app/optimumcs-pro/id437724859)
- [TrueDoF-Pro DoF Calculator](https://appshunter.io/ios/app/truedof-pro-dof-calculator/id517481814)
- [FocusStacker](https://appshunter.io/ios/app/focusstacker/id648686483)

All apps by George Douvos: https://appshunter.io/developer/395931674

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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 2026-06-11.*