With the DA 20-40mm you do also get WR construction. Very fine imaging. I have to admit now that I have it, my DA 21mm gets less use. I have yet to try it on my K-5, I should give it a quick check-over to inform you. It is very much at home on my KP, and is very compact for a zoom lens having f/2.8 at its short end. I wound up supplementing it with the DA 15mm and 70mm Limiteds. This makes for quite a beautiful compact kit when I am out and about. For lower light situations and/or the need for more reach, I take the wonderful, faster FA 77mm LTD lens instead of the DA 70mm LTD.
The DA HD 35mm f/2.8 Limited is of course a macro lens, with all that brings along. Both lenses have HD coatings. For a prime lens to address all-around versatile use, I would say the DA 21mm LTD is most versatile.
I got the DA 20-40mm LTD upon coming across a great deal, well after already having the DA 21mm, DA 40mm, FA 43mm and FA 77mm LTDs. I chose the silver one because I'd read that the coming KP would be available in silver. But it was looking fine to me on my black compact K-S2 anyway. It is a beautiful gem. Now it is available at an even better price! I go to the smaller Limited primes when I want extra-light, extra-compactness with quality, and will have the leisure for lens-changing. I don't do a lot of street photography, but it seems to me the DA 20-40mm LTD is an excellent choice for that purpose as well.
Last edited by mikesbike; 09-09-2019 at 02:19 PM.