Fueled by his passion for nature and travel, and a tireless desire to share his knowledge and artistic vision, Martin is a popular international tour and workshop leader, helping photographers from around the world to experience and capture the wonders of this awesome planet we call home.
If you should have any suggestions, problems or questions about the Photographer’s Friend for iOS App, please drop us a line with the below form or tap on Contact Us under the Photographer’s Friend Links tab on your device to open up a new email to send us. Our email address will be in the new email ready to go.
Known Issues
Sending email on a device that does not use Apple Mail as a mail client will fail gracefully, offering a link to the online contact form.
Track Changes
Version 3.3 (build 3.3.1) Mar 2020
The HFD (Hyperfocal Distance) can now be locked/unlocked with a one-second press, or by tapping the padlock, forcing the Focus Distance dial to automatically adjust to the currently calculated HFD. The lock can remain on when the HFD is not transferred to the Focus Distance dial but has no effect until the HFD label is tapped, indicated by a teal-colored label, along with a locked padlock icon.
It’s now possible to lock/unlock the Format (sensor size) dial with a one-second press, or by tapping the padlock. This setting is not changed often and some users found that they changed it inadvertently and didn’t notice.
If you try to change the Format (sensor size) or Focus Distance dials when their respective locks are engaged, a message will be displayed asking if you’d like to deactivate the lock and proceed with the change. It’s also possible to keep the lock on if the change was not intentional and the value will be reset to the original value.
Added a new DoF Calculator Help Screen to explain the new HFD and Format Dial Locks.
Refined the messaging system that was introduced in version 3.2, including a number of fun welcome messages.
Fixed a known issue that caused the Status Bar to effectively become invisible until the tab bar is tapped after shaking the device to toggle between Light and Dark Appearances on iOS 13 or later devices.
Fixed an issue that caused a blank space to be created on the right side of the Tab Bar on iPads that caused the app to crash when tapped.
Version 3.2 (build 3.2.1) Feb 2020
We added support for Light and Dark Appearance throughout Photographer’s Friend (requires iOS 13 or higher, though earlier versions work fine in Light mode). Now you can shake your device to switch between Light and Dark Modes. There is also a Default Appearance mode, which changes automatically to match the Appearance set on your iOS device. Try the new Dark mode. It looks great!
We also added two new medium format sensor sizes CF0.79 (44 x 33 mm) and CF0.64 (53.4 x 40 mm) to the Depth of Field Calculator.
Version 3.1 (build 3.1.1) Oct 2018
Added automatic support for regions such as France and Russia that use a comma instead of a period to delimit decimal fractions.
Photographer’s Friend now automatically uses a comma as the decimal delimiter in the custom Circle of Confusion setting for the Depth of Field Calculator.
Fixed a problem that caused the Exposure Shift Calculator to crash the app if a region that uses a comma in decimal fractions was set in iOS.
Fixed an issue that resulted in a truncated title in the Exposure Shift Calculator help.
Version 3.0.4 (build 3.0.4) Oct 2018
The focus distance dial is now updated to the new Hyperfocal Distance if the Hyperfocal Distance was actively being transferred to the focus distance dial when Pixel Peeper mode is activated or the megapixels changed.
The focus distance dial is also now correctly updated if a new aperture is sent to the Depth of Field Calculator from the Exposure Shift Calculator while the Hyperfocal Distance is being transferred to the focus distance dial.
Fixed an issue that caused the Exposure Shift Calculator screen to be displayed if the Depth of Field Calculator settings were changed straight after the aperture being transferred from the Exposure Shift Calculator.
Fixed an embarrassing typo in the Startup Help for the Exposure Shift Calculator.
Version 3.0.3 (build 3.0.3) Sept 2018
Tweaked the decimal points in the Depth of Field Calculator a little more, to display even more detail for very shallow depth of field measurements.
Under the hood, the code has been tweaked and updated to Swift 4.2.
Version 3.0 (build 3.0.2) Sept 2018
This is a paid update as we’ve added an awesome third calculator.
Introducing the Exposure Shift Calculator!
Version 2.5 (build 2.5.2) Sept 2018
We made Depth of Field calculation more accurate throughout and added more decimal places for small numbers to make the DoF Calculator more useful in macro photography
Photographer’s Friend now remembers the last tab you were using rather than returning to the Depth of Field calculator after a restart
Updated the Neutral Density calculator icons
Added a link to a new Online Video Tutorials page with tutorials for each calculator
Added a link to Photographer’s Friend version 3.0
*** Note that although we will continue to maintain version 2.5 of Photographer’s Friend for the foreseeable future, all new features and enhancements moving forward will be added to version 3 ***
Version 2.3.2 (build 2.3.2) Feb 2018
Added support for 1-inch sensor size cameras, such as the Sony RX100M5.
Just select 1″ from the Format dial in the Depth of Field calculator to use this newly added sensor format.
Version 2.3 (build 2.3.1) Nov 2017
Introducing Pixel Peeper mode!
When enabled we calculate Depth of Field and Diffraction Limits from camera sensor size and megapixels.
Diffraction warning color coding for Airy Disk display and Aperture dial, selectable independently. Green when no problems, amber when there’s a risk of seeing effects of diffraction, and red when diffraction limited.
Added a new row of labels and button in the Depth of Field calculator for Advanced settings and information display.
The Pixel Pitch display label can be tapped toggle between Pixel Pitch and selected megapixels.
You can now enter a custom Circle of Confusion size as a basis for Depth of Field calculation.
Updated Depth of Field calculator help with information on custom Circle of Confusion and Pixel Peeper mode.
Added a link to a detailed article on Circle of Confusion, Airy Disk, and Diffraction to the links section.
Updated screen layouts to support iPhone X.
Fixed an ND Calculator bug that caused filter values to be included in calculation even after a partial slide of filter cell caused them to be deselected
Version 2.2 (build 2.2.1) Oct 2017
Selected Neutral Density filters are now saved and restored after app or device restart
Added new Help pages with information on hiding/unhiding ND filters and updated other Help screenshots
Changed the Contact Us web link to point to the app Technical Support page contact form
Fixed a bug that caused the Quick Tips to be displayed every time the [Focus ft/m] label is tapped after the first install of the app.
Version 2.1.2 (build 2.1.2) Oct 2017
Fixed a bug that crashed the app when the Help page links were tapped
Version 2.1 (build 2.1.1) Oct 2017
Added the ability to hide and unhide the neutral density filters. Slide left to hide. Press the (number of filters) Hidden button to see all hidden filters, and slide left again to unhide them as necessary.
Tapping the Hyperfocal Distance label now changes its color when the [Focus ft/m] is set to Hyperfocal Distance, and tapping again now restores the initially selected focus distance
Added two more medium format Camera Types and three new large format Camera Types
Added some Quick Tips to DoF Calc that display on the first launch to relay a few essential tips to help avoid confusion
Added a Quick Tips button in DoF Calc to present Quick Tips at any time
Changed help pages to stop truncation when the device’s system text size is set to larger than the default setting
Corrected an error where the Crop Factor 1.5 and Crop Factor 1.6 labels were reversed
Tweaked Depth of Field calculations for greater accuracy
Added an About Photographer’s Friend page to the bottom of the Help links page
Added a link to the Links tab to request to rate and review the app on the App Store
Squished a few other minor bugs
Version 2.0 (build: 2.0.5) Oct 2017
Completely rebuilt the app from the ground up!
Made the app universal, now supporting iPhone and iPad
Enabled both vertical and horizontal orientation use
Now works with iPad Split View
Included an improved user experience for the Depth of Field Calculator
Included an all-new Neutral Density Calculator
Changed the links page to include more links to helpful and relevant documents
Removed the old Podcasts Player, and included a link that opens the Podcast in the Apple Podcast app on the device
Included the Contact Us options in the Links tab
Included a Help tab with multi-page help for the Depth of Field calculator and Neutral Density calculator
