Photo Friend exposure and DoF 4+

Calculator and lightmeter

Elvis Pfutzenreuter

Designed for iPhone

    • 4.0 • 8 Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


Photo Friend is an intuitive exposure calculator app for photographers and movie makers that know their way around a camera. The app can also work as light meter by using the phone camera. The calculator can estimate depth-of-field as well.

Highlight features:

* Easy and intuitive exposure calculator. Just drag each gauge (absolute exposure value, ISO, shutter speed, aperture) to the desired value. The other gauges move to make good exposure. For example, if you change EV, ISO and aperture, the shutter speed adjusts accordingly. (The EV meter only moves by itself when you use the light meter feature.)

* Light meter. Grant access to camera when the app asks, and a viewfinder is shown on the main screen. Point to the subject and touch the viewfinder to take a picture. The EV will be estimated with basis on the picture. Histogram and spot metering are available as well.

* Easy-to-use depth-of-field calculator. Just dial aperture, focal length and subject distance. DoF is expressed as numbers and graphically. You can fine-tune the DoF calculation parameters in Settings.

What’s New

Version 5.00

* Internal updates and improvements

Ratings and Reviews

4.0 out of 5
8 Ratings

8 Ratings

Christian-stone ,

Been looking for something like this

This is a great tool, really helpful to have an extra reference for exposure.I do with that more than one parameter could be locked at a time, and wish that the ND calculation could be changed to stops or the strengths of ND filters usually used on camera.

I’m guessing this calculation is all based around middle grey?

JenniferKouyou ,

Perfect photo app

I’ve been trying to learn SLR settings for 30 years. After one look, it all is clear! With this app, I can use a light meter, then set my camera and get instant feedback on how some settings effect others.

tumblrxuser ,


Horrible app. So many better choices. Super confusing. Poor documentation. Doesn't work - probably foes not work with recent ISO builds.

Developer Response ,

Can you give more details (iOS version, device you are using) so we can try to reproduce the problem? Write to if you prefer.

App Privacy

The developer, Elvis Pfutzenreuter, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

More By This Developer

You Might Also Like

Photo & Video
Lightme - Logbook
Photo & Video
Photo & Video
This App is a Light Meter
Photo & Video
Lightme - Lightmeter
Photo & Video
DOF Slider
Photo & Video