Frell!
Too late now, I have my long tom...

The shop was not badly lit but it was still pretty dim, I was impressed by how positive the AF was and how it just worked, not really any hesitation at all, colour also does not seem too washed out for ISO 3200. I'm no judge though, as I am a Landscape shooter I don't shoot at 3200 as there is an ISO 100!
I tried to shoot some things with shadow in them to see if there was any noise but it seems pretty good, also seemed to handle what highlights there was, with ease.

John, I do wonder about that L shaped body and whether we will see a weathersealed version of it with a more substantial grip or even a Mirrorless?
Time will tell ...

Well I thought I'd do my Public Service bit for once since there was one in my town, boring black though!

Hi Bill, thought you might appreciate that!
Since it's new and all that I thought folks might like to see what was going on, the captures I put up on here normally have been put up on my website and thats why the EXIF is stripped, not sure I can do a lot about that and so i may frustrate you a bit in the future, apologies in advance!

There seems to be a deafening wall of silence surrounding opinion on the K-S1 at the moment, (Wall of apathy?) I guess it's not really aimed directly at us but the new user. Come on guys, what a feature set for a new user! i was not joking about the autofocus, it really is very direct, are we all such luddites? For sure it's no sports camera, it's not one I'd like to hold with my new 60-250 attached (well not for long anyway) but with a forty limited on it, it's about as weeny as you can get for something with a viewfinder on it and thats sort of it's point is it not? Small, light, compact but powerful and convienient to carry (Always with you)...

Hard to go wrong really!
I have had them all! (no surprise!)
If you want staggeringly wide Go sigma 8-16mm
Want cheap and use filters go Sigma 10-20mm F4-5.6
Want a bit faster go Sigma 10-20mm F3.5
Want the best?
Go Pentax 12-24mm F4, it is the best corrected (optically) of them all.
What CA there is, is very easily corrected and from my point of view as a Landscape shooter it is the sharpest across the frame with the least distortion of all those I have mentioned.
They are all very good and your spoilt for choice...
Just pick the one that suits your budget and be happy!

Right make of these what you will, NOT IN THE LEAST BIT SCIENTIFIC! All taken this AM in my local Wilkinson Camera store.
All OOC Jpeg Nothing altered, all at ISO 3200 with a 50mm F1.8 at F2.8...
No idea what mode metering etc/etc, for Barnsey, I think the EXIF is there this time!
Kicker is it seems to focus my new 60-250mm faster than my K3

Arrived yesterday from SrS, in the end I bought second-hand after initially ordering a new one, Doug said they had one and that it was in good nick and he was right, it looks like new to me and I'm picky! With a years guarantee and for the princely sum of £700, very happy chappy!

https://www.youtube.com/watch?v=eH1DnsYV6fM

Worth a watch, in Japanese but there are some subtitles and some high ISO shots too...

https://www.flickr.com/photos/ydaisuke/15184990047/

https://www.flickr.com/photos/ydaisuke/15371190812/

Dawn Purple seems very appealing

Wouldn't hold your breath David!
There are those two 150-600's out htere which effectively replace the 150-500 and maybe the 50-500?
I feel that they may not bother with a something to 400 this time around as the big three make one of their own and a Sigma has to offer something more? Heard it was not a big seller and whatever comes out, if anything will be slow into a Pentax mount if ever it seems...