单镜头反照相机 single-lens reflex camera

单镜头反光照相机 SLR ; single lens reflex

双镜头反光照相机 twin-lens reflex camera ; twin-lens reflex camera button ; [摄] twin-lens reflex ; TLR

单镜头反光式照相机 single-lens reflex camera ; SingleLensReflection ; Single Lens Reflector

单镜头反射照相机 SLR

劳莱双镜头反光照相机 Rolleiflex TLR