Definition: SLR; Single Lens Reflex Camera; - Photokonnexion
10,354 Digital Single Lens Reflex Camera Photos and Premium High Res Pictures - Getty Images
Single-lens reflex camera - Wikipedia
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History of the single-lens reflex camera - Wikipedia
File:Vintage Konica Auto-Reflex 35mm SLR Film Camera, Made In Japan, First Focal-Plane-Shutter Auto Exposure 35mm SLR, Circa 1966 (13490913093).jpg - Wikimedia Commons