The backside of that is
Full frame or APS-c, you be the judge. - PentaxForums.com
In most images you can't tell the difference.
In the above set, I couldn't tell the difference. Once the exif was stripped I couldn't tell the difference and I took the pictures. I had to look at my notes. So, I'm still looking for the image where the K-1 gives me the best image. So the concept of the thread interests me, but I've yet to be able to show the people will prefer K-1 images. I was hoping you beat me to it.
I'm sure there must be some circumstance where it's true, I just can't demonstrate what it might be. It's that elusive.
At screen size 3840x 2160, I can't even tell the difference between photos taken with my wife's K-5 and my K-1. And that was a landscape.
We sat there flipping back band forth between the two and it was impossible for either of us to say which was which. A lot of the difference is invisible to the naked eye. It's there you know one has more lw/ph...but the image doesn't take advantage of the difference..
So if yo do get a good example let me know. It's a point of interest.