Love that vast emptiness.....nature untouched by man.

Does this model have the internal lithium battery that needs replacement after about five years?

Sometimes things do become "received wisdom" whereas they actually change all the time. I've used Pentax lenses that were stunningly fast to focus and Nikon and Canon ones that were funereal in their pace, but also the other way round as well.

There is also a cost factor and some lenses are so expensive the finances just might creak a bit. The fastest camera body I've ever used costs £4500, plus a suitable lens at £2500 and I can't even think of affording that even if I wanted to.

The K-1 plus 150-450mm suits me just fine and is plenty fast enough for wildlife. I'll just keep practicing.

If you set to JPEG capture and Monochrome then the screen will show black and white, but the capture will also be black and white.

The screen is adjustable, maybe you could explore adjusting its saturation as far as it will go. Not something I've ever felt the need for, unless shooting in black and white of course.

Also check you aren't set on spot metering. Use centre weighted or hybrid metering and it will probably give more consistent results. Spot metering needs more in depth understanding to use it successfully.

Wonderful images and wonderful solitude. After six days were you ready to return to civilisation?

Make a report and I'm sure it will be looked at afresh.

It gets even more complicated when we realise that some late Super Takumar lenses were actually Super-Multi-Coated but not actually labelled as such.

Yes, I believe quite a few lenses were carried across with new mounts.

I doubt that anybody needs an f/1.2 lens, but it does have a certain magical aura about it. It might be nice to have one though!