Originally posted by barondla Thanks. Apparently there are other differences. On another thread they were pictured together and there other differences between the two lenses. Spending this amount of money, I wanted full frame. In case Pentax goes ff d8gital 645 in the future. It also gives the option of a wider lens on a Pentax 645 film body.
The DFA 25 is a beautiful lens. Finally managed a couple of hours yesterday to shoot it. Love it. Now that I own a 25, Pentax is sure to bring out a 20!
Thanks,
barondla
I found the source of my impression that the two lenses are essentially identical. i have never used or even seen either version of the lens, so have no knowledge of my own, but see below:
QUOTE FROM PENTAX LENS REVIEWS:
It is identical to its D-FA series predecessor, except that its lens hood has been stretched to give better results on digital Pentax 645 bodies. As a consequence this lens will now produce vignetting on Pentax 645 film bodies, so you should go for the D-FA version if you also shoot film. This professional lens is fully weather-sealed and features silent autofocus.
UNQUOTE
It does seem strange to change the lens name/designation for such a simple change.