Yes, very interesting!

FA lenses have aperture rings.

Like everything else, you get what you pay for to a large extent. Now about some Lee filters on eBay? You might be lucky?

The only filters that will be useful are the polariser (but not on ultra-wide lenses), and ND Grads. If this is your first time out, then just take a variety of kit that you already have and enjoy learning about landscape photography in general. If you find something is needed, then the second trip out can be used to try more things.

As well as the 10-20mm you will need standard and telephoto lenses and a tripod. Telephoto landscapes can be highly effective and it helps the background (such as mountains) retain some of their majesty and drama. Wide angles lead to small, insignificant mountains if we're not careful.

The Q and Q-10 are capable of excellent results, the Q-7 and Q-S1 are even better, on a par with the well liked MX-1.

Some reviews seem incapable of understanding what the Q range is for and in seeing its potential. It encourages photography and experimentation, it's compact, it's fun, it's good.

I don't think Pentax lenses are that expensive for what they are michaelblue.

We have Limited lenses made with traditional materials and hand assembled, but still at prices a fraction of Leica and Zeiss. We have an excellent range of marque optics that are very much on a par with Canon and Nikon prices, sometimes higher, sometimes lower. We have some fantastic offers popping up all the time, they just need watching for.

Unfortunately it also takes the edge off the fine detail. Personally, I'd rather have the small amount of noise.

Do you have the Auto Power Off set to something like 5 minutes? I've set mine to 30 minutes to avoid the camera switching itself off too soon.

Not really a representative sample though!

What makes you assume that Pentax Users are older than average though?