This reminds me of books from a library.
It's not just the words in the books but also little things that people before you leave behind that makes them interesting.
It's just different then reading a book you bought new, it feels less significant so to say.

You've bought that lens to enjoy it and how silly this might sound but this part of the joy, leaving your marks on it while you use it.
Too bad there is no great story behind that mark though, but hey we can't have everything right.

Yes those are the ones that looks the most interesting.
There are no other flashes with P-TTL and the other modes, there are however more then enough older flashes that can't do P-TTL but have AUTO and MANUAL mode.
Matt already suggested that, I'm not into the older flashes so I can't give you advice on that.

Here you've a small list with the older pentax flashes included link

Wolfson, take a photo indoors and if you see it there then start to worry.

You remind me of this now link
Nothing evil intended but just calm down and test the camera a bit more.
Let us show a photo from indoors.

It will not work if the lens is not in A-mode.

These are all the P-TTl flashes, as long as they have Auto or Manual they will work. link
Ignore the Full and Full or ¹⁄₁₆ of the Pentax AF200 and the Sigma EF-530 DG ST, those aren't useful, all that says steps are.

Manual does not need explanation.
Auto mode the flash has a sensor that meters the surrounding light and you need to input the aperture and the iso, with that the flash calculates what flashpower it needs for a proper exposure.

I think noise=snow in that photo because it's in a specific area and noise is all over the sensor, you don't see noise in the dark part of the tower point for example.

For P-TTL the flash does a pre-flash and with that the camera calculates what the flash output must be but it's designed to do that wide open with the lens and close the aperture that you want after that.

When the lens is not in A-mode the camera does not know the aperture so it refuse to fire the flash because of that.
If you set the Lens in A mode then all should work well.

Mongoose, Yes you're right and sorry for that but it wasn't directed directly at you but more globally.
SLR style isn't the worth either because it all depends on how you look at it, they are closer to a bridge camera were you can change the lens then a SLR to my eyes.
Also what are the Olympus E-P1 "Pen" and Panasonic Lumix GF1 then?
Those fit nicely next to the Samsung NX10 but I can not call them "SLR style" like since they are far closer to a point & shoot were you can change the lenses, "point & shoot style" like maybe?
The only thing that fits for both is Electronic Viewfinder, Interchangeable Lens system (EVIL) I'm afraid

I know I ain't happy either with it but there is nothing better at the moment and since EVIL is a proper acronym I don't see why we shouldn't use it besides that it sound like cr*p

Well Korad the shutter is still there so you won't be disappointed, you might miss the sound that the mirror makes when flipping out of the way and back again.

ps. your caps lock is on

A bit off topic but there are those ringflash adapters right, are they any good?

Great to hear!