I've used Pentax DSLRs for 6 years now and I recently (as in 3 days ago) picked up a K-3 and I am approaching it as a whole new system to learn. The basic functions are OK, I can set it to M and get a usable shot but my Workflow will change. There is a new sensor, different White balance algorithm, noise reduction is different. Each will take practise and learning. So from someone who is an intermediate level of photographer, I suggest taking your time, get the basics right and figure out how the K-3 works. It is a step up from a K50 but also assumes that it does not need to hold your hand as much as a K50 would.

It's mine, it is sitting right in front of me, it is Pentax equipment and it is not a 'nifty 50' but another type of beast altogether and it is a handsome lens in a brutish sort of way.
I gave it a clean earlier on and thought I'd share.
These are good value compared to a Sigma ART 50 or perhaps a Zeiss optic perhaps not such good value compared to an A50 f/1.4 or 1.7 but build quality is higher than either of those and it does have more glass and better glass at that.

K-3 and Grip received safe and sound, exactly as described and beautifully packed.

My lens roadmap to the end of the year is this:
FA77 f/1.8 Limited (Had to sell my copy to fund a very unexpected engine replacement, miss it terribly)
DA35 f/2.4 (for the wife)
DA50 f/1.8 (for the wife)
D-FA 100 Macro f/2.8
D-FA 50 Macro f/2.8 (*** Pentax need to rebody and give it WR first)
Carl Zeiss 2.8/25 T* Distagon ZK (Been hankering after one of these for a while, suits my up close and personal type of photography)

Then I will think about a couple of zooms.

And it looks like an APS-C 12-28 is on the cards?
Still no mention of the wider than 31mm D-FA prime but I am hoping they will keep us in the dark on this and give us a surprise at some stage soon.
K Mount is getting quite a makeover all of a sudden.

Third parties in this instance being?

Carl Zeiss
Samyang
Sigma
Schneider-Kreuznach
Tamron

According to Japanese review of HD150-450, Pentax is reverting to green ring to signify "growth and development, nature and fresh". From now on Green for standard, Gold for * lines.

Thought that the FA was discontinued, not the DFA. Surprising decision for sure.

Not as yet. I'll take some shots with this and of this and put them up tomorrow.