>>3148221I have the 20-40 and it's practically permanently attached to my K-3 II. On this lens I use the wider angles a lot more than the tele end. Having said that, I use a 58mm prime on my Nikon as a tele-normal (not unlike a 40mm on aps-c) and I don't feel terribly hindered when using just that one focal length.
If I owned a 40mm limited as my tele-normal, I would buy a 15mm limited as a wide angle companion. It costs a tiny bit less than a Samyang 16mm, and it has autofocus and significantly smaller+lighter.
The Samyang 85 is so well-priced and fast, I wouldn't really recommend anything else.
