Sigma 105mm f2.8 Macro EX DG OS HSM - Canon EF Mount DSCDSCT900B It ensures that the Theta

It ensures that the Theta SC is protected from dirt

Ultra-Thin Frame: Slim

Protective Filter Case: For safe storage and easy transport

They also enable colors to become more saturated and appear clearer with better contrast

It will also help to greatly reduce the softness which can be caused by atmospheric haze and will improve colour saturation as well as contrast in subjects such as blue skies and clouds

Sigma 105mm f2.8 Macro EX DG OS HSM - Canon EF Mount DSCDSCT900B It ensures that the ThetaSuitable for full frame and cropped sensor cameras, the compact Sigma 105mm F 2. 8 EX DG OS HSM Macro offers advanced close up performance with true macro 1: 1 magnification. The HSM (Hyper Sonic Motor) ensures quiet, fast autofocus, whilst the OS (Optical Stabilizer) allows close up hand held shooting. A 9 bladed aperture produces beautiful bokeh in out of focus areas. A lens hood is included.