WILLIAM OPTICS M48 T-RING FOR PENTAX K FMA180 Counterweight extension bar

Counterweight extension bar

Passing band 300 - 390 Nm Glass thickness 2

Each mirror is tested by GSO at the factory with a laser interferometer to ensure it meets their high standards

Optical height 2mm

The proprietary lens design has Phantom Group wideband multicoating on all air to glass surfaces and the large lenses deliver completely vignetting-free exposures with larger sensors

WILLIAM OPTICS M48 T-RING FOR PENTAX K FMA180 Counterweight extension barThe William Optics T Ring for Pentax K mount DSLR cameras is a high quality M48 camera adapter made from CNC machined and anodized aluminium. Designed to have the correct backfocus so no extra spacers are needed. Specifications Telescope connection M48 x 0. 75 Camera connection Pentax K mount Optical thickness 9. 54 mm Weight 65 g SKU WO TM PT K M48