LensTutorial vs Photo Friend exposure and DoF

LensTutorial is about learning to use photographic lenses the easy way. The app wraps all lens calculations into one package and allows you to quickly see them in action. Learning photography can be easy and we encourage you to use our app to facilitate this process. LensTutorial allows to simulate photographic lens usage and display effects of lens controls manipulation. The app combines both visual and interactive way of representing information with classic DOF calculator functionality. It allows to quickly estimate and visualize the following parameters on one screen: Angle of view Total depth of field Near range of depth Far range of depth 35-mm equivalent of focal length Subject magnification All modern cameras of various makers supported.

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.