Sony just released the new Image Data Converter! The update allows better high ISO conversion. Probably the same new algorithm will be availble in future firmware updates of the Sony A850
Press release:
“α (Alpha) digital SLR users can now enjoy even more control over creating beautiful, low noise images with the latest release of Image Data Converter software.
Image Data Converter SR Version 3.2 now features new algorithms that significantly reduce image noise at high ISO settings when converting RAW data to JPEG files. Processing is most effective at ISO 800 and higher, delivering impressively natural results with minimised colour noise right up to ISO 12,800 (depends on DLSR model).
The new algorithm is effective when converting RAW file or cRAW files (depends on DSLR model) to JPEG files produced by all current and previous model digital SLR cameras by Sony (excluding DSLR-A100).
Image Data Convertor SR Version 3.2 is part of the Image Data Suite that also includes Image Data Lightbox SR Version 2.2. Supplied free of charge with all new digital SLR cameras by Sony, the enhanced bundle now also offers support for Mac OS 10.6 (Snow Leopard).
Registered Alpha customers can download Image Data Convertor SR Version 3.2 free of charge from the Sony Europe support website in English version from 31st March 2010. Other languages will be available to download within the next 10 working days. To download the new update, please visit: http://support.sony-europe.com/dime/digistill/alpha/alpha.aspx?“
Source: Photoclubalpha