>>275
Thank you for the answer.
Strangely neither 10.5 oder 10.6 is able to open this kind of RAW-Format with preview.app.
But xee can open the file on my MBP with 10.6.2 - my iMac with 10.5.8 cannot.
The only difference on my MBP is the RAW Software from Capture One (4 Std.) and Adobe (CS4) - which is installed. Both software solutions can read this filetype.