The new X-Circle kit by LockCircle allows Nikon F-mount manual-focus lenses to be used for cine-style work on any Canon HDSLR camera. Expensive cinematography lenses have one important feature that still photography lenses cannot offer: markings on an angled surface of the lens barrel, making it easy to read focus and aperture settings from the side or behind the camera. Using X-Circle, any Nikon F-mount manual-focus lens can be mounted on any Canon HDSLR camera with a 90° rotation. This allows camera assistants / focus pullers to see the aperture and focus markings better for improved performance. X-Circle is based on a high-precision collimation ring and a stainless steel bayonet, available in kits supplied with all the necessary screws for easy assembly. The kits will start shipping in February for $159.