Single-Lens: A DSLR uses the same lens for both previewing the scene in the viewfinder and capturing the image. Older twin-lens reflex or TLR cameras, on the other hand, used two lenses of the ...

hefty feel of a DSLR. Autofocus systems in both cameras have evolved significantly, but there are still differences. DSLRs use phase-detection autofocus through the viewfinder, which is generally ...

In fact, the EOS 850D is arguably better to use in Live View than it is with its rather small and inaccurate viewfinder. This is odd for a DSLR, given that viewfinders are meant to be their big USP.