Sigma Upgrades Flashguns for Pentax K100D DSLR
Thursday, August 3rd, 2006Sigma’s EF-500 DG SUPER and EF-500 DG ST model flashguns for Pentax mount do not operate with the recently introduced Pentax K100D D-SLR camera. To overcome this, Sigma will start supplying a free-upgrade service to customers. More info here.