The Canon EOS Rebel T100 / 4000D is a no-frills DSLR focused on teaching photography basics with an optical viewfinder, interchangeable lenses, and reliable still image quality in good lighting. It excels for family snapshots, travel, and casual everyday shooting, thanks to its low price, lightweight design, and easy Scene Intelligent Auto mode. It uses Canon’s vast EF/EF-S lens ecosystem (e.g., the common EF-S 18-55mm III kit lens).