Extensions
Calculator
Calculator
* Available as In-App Purchase
Calculator
for intelligent orientation change
Photographer's Friend a pleasure to use
device orientation and your ergonomic requirements
Effects all main screens
Level with Photographer's Friend
Note that this will turn off Pixel Peeper Mode but we are still able to calculate Diffraction Warnings for you, based on the custom Circle of Confusion.
The calculator will instantly display your depth of field including the near limit, far limit, and hyperfocal distance. Tap the Hyperfocal Distance label the focus distance dial is automatically set to the hyperfocal distance and all displayed information is updated. Tap again to restore your original focus distance.
Tap the [Focus ft/m] button to toggle between feet and meters. To make this interaction easy to remember, the labels that have a function are blue (default color).
We calculate the Depth of Field based on your actual Pixel Pitch and Circle of Confusion size based on your chosen sensor size and megapixels.
The first difference is that the calculated depth of field is shallower in Pixel Peeper mode, to ensure that your image is sharp when inspected while zoomed in on a computer. To reach the required Depth of Field you may find that you need to use a smaller aperture.
Whether or not you actually see the effects of Diffraction in your photograph depends on your camera and lens, and your own perception of sharpness.
The Diffraction Warnings are intended as a guide, to show you when the risk is there, but we urge you to test your own lenses, and if necessary, you can calibrate the warnings by using a different megapixel count or Custom CoC so that the red warning kicks-in in line with your findings.
Start by selecting your camera sensor size (35mm full-frame, 1.3X 1.5X or 1.6X crop factor, 1-inch, micro 4/3, or one of the medium or large format sizes) then choose your aperture, focal length and focus distance (the approximate distance to your main subject).
The Neutral Density Filter Calculator acts as a remote control for the iPhone calculator when linked, or a completely standalone calculator when unlinked.
The Exposure Value display and lock is invaluable when looking for appropriate settings from a light meter EV readout. We’ve also added a button to send your aperture to the Depth of Field Calculator and another to forward your shutter speed to the Neutral Density Filter Calculator.
There's also a link to open a blank email to drop us a line if you need any further help. We want you to get the most out of Photographer's Friend, to really take your photography to the next level and beyond!
Rate and Review
Once you’ve given Photographer’s Friend a try, we’d really appreciate it if you could rate the app and leave us a review on the App Store. This really helps us to get ranked higher and make more sales!
Technical Support
Visit the Photographer’s Friend Technical Support page for information on updates, and known issues and to contact us for help should you require it.
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How About Android?
We are currently working to provide an Android version. Please subscribe to our newsletter to be updated when it becomes available, or check back here from time to time.