While virtually all cameras offer some form of device for composing the element of a scene that are included in a photo, viewfinder camera is the generic term used to distinguish camera models that lack either reflex viewing or a rangefinder focus device.
The various types of viewfinder are detail on the viewfinder page.
The Fujifilm X100 of 2010 was the first digital camera which had a telescopic viewfinder with superimposed EVF for choice to see pure optical viewfinder preview or instead an electronic digital image preview. The concept was called hybrid finder, but the camera is still a genuine viewfinder camera. Those cameras which have only an EVF might also be called viewfinder cameras. The common compact digicams without any viewfinder have just an rear display as viewing system and cannot be called viewfinder cameras.