Quoteanyone have any experience with failing sandisk cards?Yep, that happened to me with the 5D several years ago. Cause was definetive a defective CF card at the time.
On request SanDisk provided me with a free licence for a SW that recovers lost data from Flash. Not all data could be recoverd though. In fact the damage per picture was reduced, but most pictures had still some kind of damage similar to what you showed. In total the SW could save maybe 10% of the pictures, all other remained lost.
Guess this is why I like the two card feature that allows to write to two flash media parallel. Likelihood to loose data that way is much much lower, altough not impossible either.
ah ok hopefully sandisk can help me out in this case in getting me a replacement
i'll probably get a 32/64 SD card for my 5d3 too to record jpegs onto as a backup of the raws i record on my CF
in emergencies i guess having a jpeg is better than a corrupt file