Originally posted by iudex You are not, actually it makes sense to pair FF with standard, i.e. 50mm prime. DA 50/1,8 is APCS (though rumoured to cover FF), but FA 50mm is still relatively cheap and would pair nicely with the K-1.
However it is usual to pair a camera with a zoom kit lens for convenience and since the 24-70 is very expensive (and limited focal range), a cheaper zoom with bigger FR is inevitable. Although in this price league (2000+ USD) there is no need to make the cheapest slow f3,5-5,6 zooms and I hope Ricoh makes something better (constant f4 or at least f3,5-4,5 like the Nikon FF kit zoom).
Completely agree about the standard zoom and the 50mm prime.
AFAICT, the DA50/1.8 is nothing but an FA (or F or A or M, all the same but maybe a tweak here or there) in cheap clothing with round aperture blades.
Same with DA35/2.4, just an FA35/2 but reworked.
A modern 50/1.4 would be very appropriate, yes in kit too.
I'd opt for the zoom as I already have a couple 50's though and I doubt the olf 28-80/3.5-4.7 powerzoom would shine on an FF modern cam.