Sigma has announced the PG-31 grip for the SD1 DSLR will be available in January, but the price (which could be high, given the price of the camera) has yet to be confirmed.
The Sigma Corporation is pleased to announce the release of the PG-31 Power Grip, specially designed for Sigma’s SD1 digital SLR, the camera that ensures high resolution and breathtaking image quality.
The PG-31 is a specially designed battery grip which upgrades the battery power of the SIGMA SD1 by holding two dedicated BP-21 battery packs. This caters for large-volume photography and photography in field.
The PG-31 also incorporates a shutter button and therefore becomes a grip for vertical photography when attached to the SD1, providing a more assured grip.
Power Lithium-ion battery BP-21 (1 or 2)
Weight 300g (excluding battery)
Dimensions Width 156mm× Height 72mm× Depth 77mm
Availability January 2012