Originally posted by Moe49 I was faced with this exact same question a couple of years ago. DA* and FA* lenses both deliver the 'goods', so my choice hinged on camera format.
I picked the FA* lenses because of my growing collection of FF Pentax film cameras. I sold my DA* lenses and replaced them with FA* lens near equivalents.
If I was an APSc only shooter, I would have picked the DA*60-250, and kept the other DA* lenses I had as well.
This is my problem. At the moment l have the K5 and have watched the development of this body. I am hopeful that in due course Pentax will produce a FF body, and as a consequence l am attracted towards the FA* lenses as opposed to the DA* variety. The problem is, l cannot be certain that in the relatively near future, say two years or so, Pentax will go down this line.
If they don't,by the way, l think they are being commercial simpletons. I see all this talk about " but will the Professionals switch across to Pentax ". But with respect the Pros do not buy the majority of camera bodies, it's people like you and me who do. In my camera club, l have lost count of the number of adequate (no kore than that technically ) Cannikon photographers who have gone out and bought FF bodies, or who are franticly saving their pennies / cents, to make the switch sooner rather than later.
FF is today's new megapixel race as far as most non professionals are concerned. It is the "must have" upgrade, and at the moment Pentax have not even taken off their tracksuits to even enter the race, never mind being in the starting blocks.
As l have said earlier l have the FA* 28-70mm and therefore appreciate what the FA* brings to my photography. I am also aware of the weight variances :
FA* 80 - 200 : 1.52
DA* 60 - 250 : 1.1
Sigma - 70 -200 : 1.43
I also have at the back of my mind, that if anything goes wrong with the FA*, there is unlikely to be an easy option fix.
Don't you just hate decisions.