SDXC Card support
http://www.pentax.jp/english/support...al/645d_s.html 645D
http://www.pentax.jp/english/support/digital/k-5_s.html K-5
http://www.pentax.jp/english/support/digital/k-7_s.html K-7
http://www.pentax.jp/english/support/digital/k-r_s.html K-r
http://www.pentax.jp/english/support/digital/k-x_s.html K-x
Library page on Firmware http://www.ausphotography.net.au/for...entax_Firmware