I have several Extreme III cards, 16GB and 4GB. I notice lately that my cards are full in my Nikon D3 but really they are only holding a fraction what they used to hold. Example my 16GB card only fills to about 4GB. I always reformat in the camera before use, is there a way to recondition and reclaim the memory space?
For better exporsure and greater chance of gettinng a useful response, you should probably post your question in the appropriate board:
http://forums.sandisk.com/t5/Mobile-memory-professional-cards/bd-p/all-cards-readers
This board is for the SanDisk Memory Zone app. 
