Sigma has unveiled a USB Dock that attaches to a computer, allowing photographers to update lens firmware and fine-tune focus and other parameters to suit their needs.
The user connects the lens to a computer, using the USB Dock, and can adjust variables via ‘easy-to-operate’ on-screen controls.
The software includes a focus limiter, customisable for sports lenses, according to Sigma.
The system uses new software called Sigma Optimization Pro.
Sigma has also used photokina to debut a new 17-70mm f/2.8-4 DC Macro OS HSM zoom.
The lens includes three aspherical lenses, plus a double-sided aspherical lens.
It boasts a minimum focusing distance of 22cm and maximum magnification ratio of 1:2.9.
Also on the horizon is a new 35mm f/1.4 DG HSM.
It features a nine-blade diaphragm, an FLD glass element, plus four SLD lenses to help reduce aberration.
Sigma has also redesigned its 120-300mm f/2.8 DG OS HSM lens.
‘It has new weather sealing and is compatible with the new USB Dock so users can customise features such as micro AF adjustments, focusing speed and focus limiter,’ said a UK spokesman.
Launch dates and prices have yet to be released.