The HDR Efex Pro 2 Software from Nik Software is a software plug-in for use with Adobe Photoshop, Adobe Photoshop Lightroom, and Apple Aperture. It allows you to create stunning High Dynamic Range (HDR) images by aligning and blending multiple exposures of the same scene. The software is optimized for use with multi-core CPUs, 32- or 64-bit systems, and GPU acceleration.
HDR photographs typically require software to blend an underexposed image, a properly exposed image, and an overexposed image together in order to create a stunning image that preserves shadow and highlight detail beyond that which the camera sensor can capture alone. This software gives you many options for creating HDR images, including one-click visual presets, advanced tone mapping algorithms, detailed HDR controls, and U Point Technology controls for fine-tuning colors and tonality.