Originally posted by midkiffphoto hcc, I had a brand new back up Lexar still in the packaging that I just took out and tried with no luck, same error.
Just a thought, I think cameras do "Quick Formats" and so sometimes need the cards to have full Formats in a PC before the cameras will recognise them - have you tried that with the brand new card?
Other thought - have you tried taking the battery out of the K-3 for a few minutes (or longer if you have time), and then reinserting it and trying again? (sometimes the K-3 does appear to need that to "get its head in order").
Otherwise it could well be warrantee time!
---------- Post added 04-30-15 at 05:14 PM ----------
Originally posted by stevebrot link provided by rawr to format the card. Here are a few bullet points regarding SD cards:
[*]NEVER format a SDXC card on your computer. Chances are good that your computer's format utility does not fully support the card's exFAT file system or that you may inadvertently format to FAT32 rather than exFAT.*
Steve
* The Wikipedia article on SD has a concise explanation:
Secure Digital - Wikipedia, the free encyclopedia Steve
From what I think I understand from a very quick read of the linked article, it would appear that all reasonably modern Microsoft and Apple OS' support the ExFAT required to format SDXC cards - so, unless the OP's computer is running a very old version of the OS, then I would have thought that this should not be the issue - otherwise the previous formats of the cards would have meant that they won't be read by the cameras a long time ago.
Looks to me like something else!
No problems so far myself in using W7 PCs to format cards up to 16GB for use in both the K-3 and K-30 - and even swopping cards between them (possibly not recommended but does seem to have worked so far - but never tried any cards larger than 16GB.
John
PS: thanks for the link to the interesting Wikipedia page - quite enlightening!