Sigma USB Dock - Nikon Fit Other Mount Adapters with ultra-sharp results across the

with ultra-sharp results across the entire frame even at F1

Featuring a brass bayonet mount that contributes to the overall strength and durability of the lens

Along with fine grain and perfect for indoor or outdoor use

In addition to the dioptre correction

Joe Cornish - one of the world's leading photographers - reviews the Smooth Cotton 300:

Sigma USB Dock - Nikon Fit Other Mount Adapters with ultra-sharp results across theThe Sigma USB Dock allows you to connect your Nikon fit Sigma lenses to a computer in order to fine tune and adjust parameters on their lens to suit their own preference. Using Sigma's Optimisation Pro software (included) you can update the firmware and configure the autofocus speed, optical stabilisation and also modifty the minimum and maximum focusing distance.