Originally posted by pranza let's get back to the topic: what STOPPED me from getting a K1
Well, in the original topic, the concerns and the circumstances of the OP are given, and I believe appropriately responded to. But here, this poster, aside from the size and weight issue, brings up their own reasons for rejecting the K-1 or K-1II, which are far removed from the OP's concerns. The OP is seeking a next effective step for an upgrade from the OP's current K-5, and finds reservations regarding the K-1II as an option. Since the OP already owns an extensive arsenal of fine DA lenses, and prefers relatively compact camera bodies, the overall responses have offered logical alternative suggestions to the K-1II idea, in the form of a more advanced APS-C body.
This poster brings up a host of other objections to the K-1, none of which are pertinent to the interests of the OP, so not really getting back to the topic at all. It seems he has had difficulty adapting to changes in ergonomics and controls designed to function with advancements this poster dismisses as worthless. The K100D is offered as the best-ever Pentax DSLR, and a fondness is expressed for the older MF Pentax 35mm film SLR bodies, along with their larger, brighter viewfinders, which sport a split image (emphasized in bold letters) design for "proper" focusing. In his opinion, the VF of the K-1 is utter crap.
I used Pentax 35mm film MF SLR bodies for many years. Yes many had a large, bright VF of the type he prefers. But some were actually a bit too large, especially for glasses-wearers, because it was often difficult to see the info display at the border. AF or automatic anything is not guaranteed to be accurate 100% of the time, regardless of brand. The idea one cannot get fine results with a Pentax DSLR just shooting photos at a wedding is utter nonsense. We're not talking fast-action sports here, using long-range tele lenses doing burst shooting with multiple-point AF tracking!
As to the split-image VF for focus accuracy, there is no guarantee here either. Such screens actually provide 3 focus aids- the outer matte area, then a small area around the center- kind of a prism-type that will glitter when focus is off and be smooth and clear as focus is achieved, then the split-image type in the center. The split image type needs some subject matter having clear edges to line up (not always there or in the right place), that is why the other focus aids are present as well. I eventually trained my eye to do a better job just using the matte screen, as newer models appeared only having this installed. But not everyone's vision is the same. Since newer models had developed more features, etc. especially when the AF technology arrived, more info was added into the border of the VF, making a reduction in size necessary so this info could be seen.
I used a Pentax K100D Super for a number of years. I was still shooting film when I wanted better quality, as I did not find the digital technology to be quite as good yet at this point. But I eventually got the K200D, which I found to definitely be more satisfactory (still CCD). It was a game-changer. Noticeably improved resolution, more control over factors like dynamic range, highlight protection, etc, good ergonomics in the hand, and much better WR construction. It tends to under-expose some, which can be easily compensated for. It served me well for a number of years. Since then I've come a long way, in my own evaluation. I have appreciated and taken advantage of the advancements that have come forth.
Then there's color accuracy, this poster finds seriously wanting. Lab tests, even from some time back, revealed that even the least accurate DSLR had much better color accuracy than does the most accurate color film! Also, there was a recent posting here of a camera reviewer doing test shots with the K-1 compared to a Nikon, I believe, showing the K-1 having superior color accuracy. In terms of right out of the camera, Pentax might be the only brand to offer a variety of color palettes according to subject types, and in-camera adjustability of color palettes. Otherwise, the color palette is largely dependent on post processing, as is so with many factors.
As to AF, it is possible this poster has never discovered how best to employ AF for best results.
As stated, the VF of APS-C DSLR bodies is of necessity smaller than that of a FF DSLR body. That taken into account, if this poster cannot distinguish a very useful advantage between the even smaller and dimmer pentamirror VF of the K100D (and K200D), and the larger, brighter pro-style glass pentaprism VF of the K-5, K-3, and certainly the KP's improvement from 92x to 95x magnification, all with 100% frame coverage, let alone that of the K-1, then it is no surprise that a split-image screen is needed by this person. In some models one of these can be installed.
This poster should be advised, the K-1's out-of-camera JPEG images are not optimized at default. Sharpening is conservative to give laterality for post but can be optimized with in-camera adjustments. Perhaps this was not done, and a false impression has resulted. Otherwise, if this poster can see no substantial difference in resolution between the K100D and the K-1, or for that matter the K-5, K-3, or KP- then by all means the best advice is to keep on shooting with the K100D and those old MF 35mm film cameras!!