# DoF Viewer > DoF Viewer (iPhone/iPad app by Arnaud Kerckhoeve.) - Source: https://appshunter.io/ios/app/dof-viewer/id427477409 (this page in markdown: same URL + `.md`) - Developer: [Arnaud Kerckhoeve](https://appshunter.io/developer/427477412) - Category: Photo & Video, Utilities - Price: Free - Rating: 3.71/5 from 7 App Store ratings · 13 written reviews indexed - Age rating: 4+ - Requires: iOS 4.3 · 12 MB - Languages: American English - Released: 2011-03-28 - Data updated: 2026-10-29 - User reviews in markdown: https://appshunter.io/ios/app/dof-viewer/id427477409/reviews.md ## What is DoF Viewer? DoF Viewer is an application used to calculate the depth of field (DoF) as well as the Angle of View (AoV). It also calculates the hyperfocal distance, the near and far boundaries for acceptable sharpness (near focus and far focus). A new function gives an indication of the amount of background blur. The application is Universal, it means it can run on both iPhone and iPad. The originality of the application is its graphical interface that allows the user to view the depth of field values on all the aperture range without having to change a new setting. The user can quickly realize the influence of its setting, and other possibilities it has to manage the depth of field. The application is very simple to use, only two parameters require configuration: - The type of camera used (A database of over 250 cameras is available) - The unit of measurement (metric or imperial) The user configures its shooting parameters with 2 "sliders". - The focal length (focal) between 8mm and 1200mm - Distance shooting (Distance) The depth of field is calculated in "real time". Thanks to a "moving" window, DoF Viewer gives the value of the hyperfocal, the depth of field (DOF), the minimum and maximum distance of acceptable sharpness zone (Near Focus Far Focus) for each f-stop. And this without any button! Simply with a "vertical" swipe on the workspace. A «tap» on one of the DoF row will display the new view : The visualization of the amount of background blur (or degree of fuzziness ). With this new graph you can analyze how blurred areas are represented on the picture and estimate both the degree and the quality of unsharpness. The graph represents the variation of the blur spot size in function of the distance. A "Tab" provides access to the calculation of the angle of view The angle of View is given in degrees it represents the angle covered by the lens (horizontal, vertical and diagonal) The field of view is given in meters (feet) it represents the distance covered by the lens for a given distance. Another view is used to display the depth of field in another way! This "bar graph" view shows the depth of field for the entire range of f-stop The user can configure the aperture scale from of f/1 to f/64 with full-stop, one-half-stop and one-third-stop f-number. The distance scale is also configurable to suit the type of lens used (wide or tele) Beware though it is possible to configure a 1200mm lens with a focusing point at 5 cm, DoF Viewer does not check the consistency of the parameters entered by the user! An "Expert" mode is available to calculate the circle of confusion This calculation eliminates the criterion of Zeiss and can estimate the depth of field with respect to the final image (enlargment). Help section explaining the concept of "expert CoC" is accessible from the application With The iPad version it is possible to compare two different types of configuration ## Is DoF Viewer safe? Not enough ratings yet to assess DoF Viewer. ## Is DoF Viewer legit? DoF Viewer appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for DoF Viewer is 73 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/dof-viewer/id427477409/reviews.md ### 1/5 — Seriously needs an update *2016-03-22* The only Sony a is the a3000? There's more than that now. ### 2/5 — Camera Database Outdated *2016-02-27* Good optics/physics, but the last update of the camera database was in 2013. Not usable with my 2015 camera :-( ### 3/5 — Cameras *2015-12-22* No support for Nikon D750, even after it had been out over a year. ### 5/5 — DOF and HFD Done Right *2014-09-21* This app has been out for three years and has been revised through version 3.1. I am surprised that there are only 13 reviews. This is a great app, well designed, and quickly provides DOF and HFD analysis at varying field conditions. The graphical summaries are fantastic and the Expert CoC calculations appear to be well done. The Help summary of CoC is very good. I would recommend this app to any photographer wanting to develop a better understanding of DOF and HFD. The iPad is the best; easy to manipulate and view, great graphic and human interface design, and flawlessly uses iPad real estate. The iPhone implementation is limited by smaller form factor but still accomplishes most of what iPad does. Recommendations: iPhone, not able to set up Camera2. Having a reference camera is quite useful. iPad and iPhone: (1) suggest using decimal ft for Imperial units, switching to decimal inches at distance less than 3.0 ft, (2) provide better description on proper focal length to use on DX size sensors [lens FL = 18mm, effective FL = 28mm at crop factor of 1.5, which to use? I believe 18mm is entered and calculations adjust for sensor specific crop factor. Clarification would help.] Easy 5 Stars. ### 5/5 — A Bargain! *2014-06-29* I'm impressed. All the information I want displayed professionally. I have purchased 4 depth of field apps, several which cost at least twice as much, searching for the "right" app for a person who owns multiple cameras. This is it! I do have a request. Please add support for the Nikon 1 V3. ### 5/5 — Plenty of info, well displayed *2014-03-09* This app tells you an awful lots about focus parameters, and does so in a very professional way. You can set up 2 cameras so that the app has a basis for its calculations. Cheap at this price. ### 5/5 — Great app! *2013-04-17* Even a experienced photographer can learn a lot from this app. I especially like the "expert CoC" that allows me to set the circle of confusion to include the print size, viewing distance and visual acuity. The app works well. Like the previous reviewer, I'd like to see more intelligent use of English units. ### 4/5 — Good features...needs work in English units *2013-01-08* I like the app a lot and works well. Needs to have English units re-worked so they are more intelligently selected and rounded off. ### 4/5 — Very useful *2012-11-21* Only improvement I would like is the ability to specify very specific focus distances. Using a slider is imprecise. ### 4/5 — Elegant, rich display. Perhaps a bug? *2012-08-09* There is a lot of information packed into this display. It takes a little while to figure it all out, but the results are far more detailed and useful than any other lens simulator app that I have seen out there. One concern however, when comparing a full frame 5D MkII to an APS-C 7D, on the top left pane this app is showing a *larger DOF* for the 5D than for the 7D. This goes against the expected. ## Version history (last 5 releases) ### 3.1 — 2013-09-08 - Camera database updated ### 3.0 — 2012-11-09 _ New feature added: Visualization of the amount of background blur (or degree of fuzziness ) _ camera database updated ### 2.12 — 2012-06-04 _ Improved user interface. _ Update the database of camera _ The choice of distance is no longer related to the type of focal _ Choice between a dark or clear interface ### 2.11 — 2012-03-07 - New functionality added : Angle of view and Field of view calculator -> it gives a graphical representation of the angle view, as well as the sensor size of the camera. -> The Field of View is given for a specific distance. The application also estimates the coverage of the sensor according to a selected object. - Bug fixed concerning application startup ### 2.10 — 2012-03-01 ** If you have troubles after updating to version 2.10. Remove the app and download it again, it will fix the start-up issue - New functionality added : Angle of view and Field of view calculator -> it gives a graphical representation of the angle view, as well as the sensor size of the camera. -> The Field of View is given for a specific distance. The application also estimates the coverage of the sensor according to a selected object. --- *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 2026-10-29.*