Lightroom combines photos into "collections" - virtual gatherings of files that can quickly search.
It stores information about keywords, previews and metadata not in each graphic file, but in a centralized database (the SQLite engine).

Therefore, the database can be accessed and about the photos, which are now in the archive on DVD. The size of the program is much smaller than Bridge, it runs faster and takes less RAM.
In general, Lightroom is designed exclusively for photographers who are interested in processing and cataloging photos, rather than integrating everything and everything.
Another feature of the package Photoshop Lightroom - the separation of the process of working with pictures into separate stages.
Each of them has its own functional module with a corresponding set of tools and palettes of settings.


System requirements:
Intel® or AMD processor with 64-bit support
Windows 7 with Service Pack 1, Windows 8, Windows 8.1, or Windows 10
2 GB of RAM (8 GB recommended)
1024 x 768 display
1 GB of Video RAM (VRAM). 2 GB of dedicated VRAM is recommended for large, high-resolution monitors, such as 4K- and 5K-resolution monitors.
2 GB of available hard-disk space
OpenGL 3.3 and DirectX 10-capable video adapter for GPU-related functionality
Internet connection required for Internet-based services