[emptydam]

I have a istDL and use Sandisk and other SD cards, mostly 2GB. I use Nickel metal hydride batteries with 2500 mah capacity which are great EXCEPT when taking photos quickly after about 200 exposures the voltage starts to die. The camera then behaves erratically. OK, change the batteries. Then I find the SD files or file structure has been corrupted. Having tried many recovery programs with limited success I think there is a problem with low voltage performance. Has anyone had problems with NiMH batteries and corrupted files? It is a killer as I seem to lose most/all of the files. The SD can be reformatted but the pics (200+) are lost. It could be I have a bad SD card but it seems to have happened with a few of them. Cheers Peter