Sorry Roger. When Nikon comes out with a new SLR in 1959 that just happens to copy everything that Pentax has already done, and then includes a single dial for both high and slow shutter speeds and an auto diaphragm, both of which Pentax also had in the 1959 S2, this does not qualify them as the first at anything. Besides, whether the shutter was controlled with one dial or two, they both use the same high speed shutter mechanism along with a low speed escapement to delay the second curtain.
I like the Pentax SV. Very nice cameras though they came along after the Nikon and the shutters seem a bit fragile. The K was a couple years ahead of the F and had a better shutter system than some of the later Pentax cameras in my opinion, at least they continue to work well 50+ years later.
Oh, dear. Add in bayonet lens mount for the F: something else that Pentax took a long time to get around to, and borrowed from (almost everyone) else. The Pentax was almost there -- but you can't really say that an "almost there" camera set the style for everything else. I mean, why not a Praktina (1952)? Put a motor drive on (I had one) and it even had an instant-return mirror.
The argument about slow speed escapements is non-existent: that's how you build a mechanical shutter, whether leaf or focal plane with blinds. The argument about the SV coming out after the F is totally irrelevant, too. If you define the F as the prototype for modern cameras, as I do, then who cares when
anything after 1959 came out? I merely quoted the SV as why I really like Pentaxes, to answer your nonsensical "fanboy" accusation. Accusing anyone of being a "fanboy" is something of an insult, and you'll notice that I never said you were: I just said that Pentax and their fanboys had made a lot of unjustified claims. On that basis, it's true, you are beginning to sound like a fanboy.
The whole thing about copying is nonsensical too.
Everyone copies or adapts what has gone before, often from prototypes or patents. What has Pentax ever
not copied from elsewhere? And, of course, it's not cameras alone that have auto diaphragms. You need lenses too. What was the first
production Super-Takumar, and when? It's your defence of the Pentax as the first fully modern SLR that is beginning to look more than a little desperate.
Cheers,
R.