Originally posted by CreationBear as a practical matter would you have both the K28/3.5 and K35/3.5 in your bag at the same time?
I have brought them both: three times on longer trips to (all involving Rockies). I've rarely taken them both on shorter outings. Admittedly, neither gets as much use these days as I would like, as I have a couple of very good zooms that cover their ranges and the zooms are so much more convenient. One thing about both these lenses: unlike, say, the DA Limiteds, which share a very similar tonal signature, these lenses are a bit more unique, and I would take both not merely for the different FOVs (admittedly, they're not far apart), but for the somewhat different look I can get from each lens. Also, I tend shoot mostly in the 15mm to 35mm range in any case. I would never carry, say, a 15mm, a 28mm, and a 43mm, because I'd hardly ever use that 43mm. So it may depend on your shooting style. If you shoot enough at longer (short tele) focal lengths to justify carrying a 43mm or a 70mm, 28mm and 35mm are probably too close to justify carrying both.