Sigma 70-200mm F/2.8 DG OS HSM Sports F/Nikon, Ø82 sound & studio recording It opens like an umbrella

It opens like an umbrella with a centralized metal joint

Thanks to the unit's 9V battery

Tamron Teleconverter 1

and a BBAR coating has also been applied to suppress flare and ghosting for maintained image quality

As the name "Switch" hints

Sigma 70-200mm F/2.8 DG OS HSM Sports F/Nikon, Ø82 sound & studio recording It opens like an umbrellaSigma 70200NS 70 200mm f 2. 8 DG OS HSM Sports F Nikon, 82 EF Mount Lens Full Frame Format Aperture Range: f 2. 8 to f 22 Nine FLD Elements, One SLD Element Super Multi Layer Coating Hyper Sonic AF Motor Intelligent OS Image Stabilization Removable Arca Type Tripod Foot Dust and Moisture Sealed Construction Rounded 11 Blade Diaphragm Compatible with Sigma Teleconverters Prized for event, portraiture, and sports shooting, the Nikon F mount Sigma 70