Photographer's companion Pro for Android

Photographer's companion Pro, from Stef Software, is a technical toolkit that helps you calculate manual camera settings in the field. The app collects more than 40 specialized calculators and planners to compute exposure, depth of field, and celestial alignments, including ND-filter and long-exposure tools. It adds offline operation, AR for sun and moon alignment, and customizable camera and lens databases. You are the intended user if you use manual modes and need precise, portable references for landscape, macro, or astrophotography.

When you need exact manual settings, the app supplies calculators for exposure scenarios instead of acting as a camera. It includes tools for ND-filter exposure, long exposures, Depth of Field, hyperfocal distance, bokeh simulation, and astrophotography helpers like star-trail planning and the 500 rule. These calculators convert inputs such as aperture, focal length, and ISO into specific shutter speeds and distances.

The app turns complex exposure math into field-ready answers

It adapts calculations to your gear and to remote shooting conditions

You can define camera sensor size and lens characteristics in a saved database so results match your equipment, and most tools work without internet, which matters on remote shoots. The app tracks Sun, Moon, and Milky Way positions and sends Golden and Blue hour alerts. Pro-exclusive AR overlays map celestial alignments in the viewfinder for precise composition planning.

It serves photographers who already shoot manually, not casual point-and-shoot users

The app does not take pictures itself and is designed as a field reference for informed choices during shoots. The Pro experience removes ads and adds advanced planning and film development calculators aimed at professionals. Users report high ratings, with praise focused on long-exposure and landscape planning utility, especially for repeatable night and daylight workflows.

The app is a practical gateway for photographers moving into manual control

If you are ready to leave automatic modes and already understand aperture, shutter, and ISO, the app gives a single portable reference that supports field decision-making. The trade-off is that it assumes technical knowledge rather than teaching fundamentals. For photographers who need calculated, repeatable results during shoots, the app is a sensible entry point into deliberate manual workflows.