http://www.pentax.jp/english/support/digital/dc_utility4_win.html[Main changes from Version 4.34] Added lens data[smc PENTAX-DA 40mmF2.8 XS][smc PENTAX-DA 645 25mmF4 AL [IF] SDM]Updated library for reduction of tone jumping.Btw, as before, I do not understand completely for all the changes. What does the second thing mean? :-o