with a built-in 1.4x teleconverter. Now that would be something. Or could Sigma be working on its most telephoto lens ever, an 800mm F6.3? We don't know the timeline for when this mystery new lens ...

Plus, the lens comes with a 1.4x teleconverter in the box that extends focal length to a 560mm equivalent — making it even more suitable for wildlife photography and shots of the moon ...

Canon will not be making black versions of its RF teleconverters, despite launching a black version of its 70-200mm trinity ...

The Artra Lab X100 camera conversion lens on a white background The Artra Lab Funkyframe TCL 60mm teleconverter lens for the X100 series has the opposite effect, narrowing the view to a 60mm ...

Canon's first 2/3” portable lens with an mighty 27x optical zoom, it also features a built-in 2x teleconverter. Canon CJ27ex7.3B For real portability, we’ve seen a growing number of ...