Sigma have announced an auto-focus problem when their HSM equipped lenses are used with the new Nikon D200.

Sigma Service Notice

Notice to end-users using Sigma’s HSM equipped lens with Nikon D200 camera

To our valued customers,

AF function of our HSM equipped lenses do not operate when “AF operation button” on the back of the body of Nikon “D200” digital SLR camera (recently introduced to the market by Nikon) is used. This problem is caused due to a firmware “bug” of our HSM equipped lenses.

We deeply regret any inconvenience this may cause our customers who own D200 camera and we are committed to making this situation right. In this respect, we will start updating firmware of these lenses free of charge today.

Please also note that if “shutter button” is used for AF operation of HSM equipped lenses, camera and lens combination works without any problem.

This problem occurs with HSM equipped lenses only. Non-HSM models of Sigma lenses function properly with D200 camera.

List of HSM equipped lenses require update for D200 camera

Fixed Focal Length Lenses
14mm F2.8 EX ASPHERICAL HSM
30mm F1.4 EX DC HSM
APO MACRO 150mm F2.8 EX DG HSM
APO MACRO 180mm F3.5 EX HSM / APO MACRO 180mm F3.5 EX DG HSM
APO 300mm F2.8 EX HSM / APO 300mm F2.8 EX DG HSM
APO 500mm F4.5 EX HSM / APO 500mm F4.5 EX DG HSM
APO 800mm F5.6 EX HSM / APO 800mm F5.6 EX DG HSM

Zoom Lenses
10-20mm F4-5.6 EX DC HSM
12-24mm F4.5-5.6 EX DG ASPHERICAL HSM
17-35mm F2.8-4 EX DG ASPHERICAL HSM
APO 50-500mm F 4-6.3 EX HSM / APO 50-500mm F 4-6.3 EX DG HSM
APO 70-200mm F 2.8 EX HSM / APO 70-200mm F 2.8 EX DG HSM
APO 100-300mm F4 EX HSM / APO 100-300mm F 4 EX DG HSM
APO 120-300mm F 2.8 EX HSM / APO 120-300mm F 2.8 EX DG HSM
APO 300-800mm F 5.6 EX HSM / APO 300-800mm F 5.6 EX DG HSM

For further information, please contact to nearest authorized Sigma Service Station.
http://www.sigma-photo.co.jp/english/network/index.htm

Notice
Our head office will be closed between December 29th, 2005 and January 4th, 2006.  Since year-end and New Year holiday period is very close, updating the firmware by Sigma Service Center would take a little longer time than usual.