[b]smon222/dtr:[/b] If your desktop/USB card reader has UHS-1 then surely any benchmarks are pointless?
OK if you want to compare cards against each other, but no indication of how they should or will perform in the GH2 as the relationship without UHS-1 may not be the same. Feel free to correct me if I am wrong.
Having said that, I used an app called HD_Speed: http://www.steelbytes.com/?mid=20 Instructions posted here, along with data collected from back in the GH13 days to present: http://www.dvxuser.com/V6/showthread.php?217260-SD-SDHC-Card-Write-Speed-Tests
[b]niphot:[/b] your experience with the Extreme Pro 95mb/s card sounds ominous. I knew they had problems spanning with the ultra HBR hacks but I thought they where OK otherwise. Just a simple thing to check, did you format it in the camera? This thread has much info about the 95mb/s cards, even though they concentrate on the 64gb versions which seems to be the proven (though insanely expensive) winner: http://www.personal-view.com/talks/discussion/1491/95mbs-sandisk-extreme-pro-spanning-reports-64gig-sdxc#Item_141
[b]jguk:[/b] are you sure about that? I know it won't span with Ultra HBR hacks, but surely it's OK to use otherwise, they're still the highest rated card SanDisk has to offer. niphot's experience doesn't sound good. Maybe I need to go through the above thread again.
I'm still in negotiations to return my Ultra Class6 30mb/s cards. Was shooting with one on the weekend and RAW+Jpeg caused me to miss quite a few shots, the camera couldn't clear the buffers quick enough. Ended up switching to Jpeg only.