GYRob
Well-known member
Looks like this could be interesting .
Rob.
http://sigma-rumors.com/2014/09/sigma-150-600mm-f5-6-3-dg-os-hsm-sports-additional-details/
Rob.
http://sigma-rumors.com/2014/09/sigma-150-600mm-f5-6-3-dg-os-hsm-sports-additional-details/