SE2470-F Focus Gear ~for Sony SEL2470Z Vario-Tessar T* FE 24-70mm F4 ZA OSS (Use with 37149)This product has been discontinued. There is limited stock available. Focus gears allow access to the mechanical zoom function of many lenses. Use of these gears may require specific port extensions and may not be available for all housings and lenses. This focus gear is specific for the Sony SEL2470Z Vario Tessar T* FE 24 70mm F4 ZA OSS lens. NOTE: this focus gear is designed to be compatible with SKU #37149 SE2470 Z Zoom Gear for Sony SEL2470Z Vario