focus-stack vs Helicon Focus

focus-stack is a free desktop program that combines photographs taken at different focus settings into an image with extended depth of field. For each pixel, it selects the sharpest source image, a method documented for uses such as microscope photography. The tool can resize and rotate stack images to align them, or alignment can be skipped or adjusted. Outputs include a focus-stacked image, an optional depth map, and a 3D preview based on that map. Input formats supported by OpenCV include JPG, PNG, and TIFF, while the filename extension determines output format. Processing controls cover denoising, consistency filtering, batch size, and thread count. OpenCV’s OpenCL interface provides GPU acceleration when available, with an option to disable it. Binary packages are listed for Windows 10, Ubuntu 20.04, and Mac OS X. The project is MIT licensed; Linux builds require OpenCV 3.0 or newer and basic build tools.

Helicon Focus combines photographs captured at different focus distances into one image with extended depth of field. It is designed for focus stacking in macro and micro photography, close-ups, jewelry, products, landscapes, flowers, animals, and still life. The software processes images at 16-bit precision, supports color profiles, opens RAW files, and can save Pro results as DNG. It handles stacks of hundreds of high-resolution images and supports unlimited stack length. Retouching tools copy areas from aligned source images or combine areas from outputs, with a grid for detailed work. Batch rendering can queue and split stacks, while command-line parameters allow calls from other applications. Lightroom and Capture One plugins export stacks. Pro features add 3D model export and 2D micropanorama stitching. Current downloads support 64-bit Windows 10 or 11 and macOS 12 or later. A fully featured trial lasts 30 days; Demo mode then limits resolution and adds a watermark.