In the course of studying the possibility of a Full Frame Pentax DSLR system and how ready the current Pentax lens system (i.e., the DA lineup) would be, I have done an extensive research to find out most of the relevant information in the Internet that have been there so far, as well as to do some tests on my own, all of which are summarised as below:-
DA PrimeCompatible? (Yes/No)Reason for No
