I would forget the tripod, it will be busy.

Those two contacts first appeared on top range film bodies and were used to power "power zoom" lenses, they were later used in DSLRs to power the motors in SDM lenses, in top of the range DSLRs they would also still operate some of the functions of the old Power Zoom Lenses.

Entry level models such as the k50 which still had contacts for SDM but wouldn't operate power zooms (presumably something to do with the circuitry or lack of power, no one really knows)

It mentions Firmware updates so I would assume compatability will depend on which contacts are used to operate the aperture and also how far back Pentax are prepared (or can be bothered) to go in the model range.

I would hope this is something that's been in development for several years and older bodies have been designed with this in mind.

That first one is a cracker, David Trout may be a bit green when he see's it

Take planes, there'll be plenty of them

Seriously though, you'll need an assortment of focal lengths and especially a mid to long range zoom, I've only ever done one airshow but I took the Sigma 50-500 so was well covered, most of the flying shots were taken round about 300mm there weren't many static planes about so the 50mm ends was a bit useless, suppose that depends on the show.

One thought. given the recent concerns over public safety etc the flying display may be further away so the longest lens you have would be the best bet.

I found finding the plane as a speck at the short end of the zoom and then zooming in on it a lot easier than searching the sky at long range.

The comment I wanted to make would have got me banned, I'm sure JR would frown upon the expletives I was going to use.

I'll just have to settle for "Effin L"

If I had the cash I might just change my mind about Full Frame

It's rubbish!!!!!!
There's no pictures of naked ladies

Seriously though, I can't find any problems with it.
It loads fast enough, easy to navigate, no annoying intros or music.
I think you hit the nail on the head.

One niggle: the overall display was a bit small on my screen, (24 inch monitor set at 1920x1080) seemed much better if I zoomed in to 125%

There will never be any resolution to this, ever.

There are so many ways to do things and so many different opinions on what people find "acceptable" even trying to draw a line between what some see as Photography and others see as Digital Manipulation would cause no end of discussion as everyones point of view is different.

When digital first took off someone coined the acronym GIGA, Garbage In Garbage Out, that used to be very true but with the advances in photoshop and the availability of god knows how many filters even a novice can now make the proverbial silk purse out of a sows ear and rescue an image that would otherwise have gone in the recycle bin.

EDIT: Typo.

Totally agree with Rob above.

I think the real question is when does it stop been photography and become digital manipulation, there's nothing wrong with either but someone (like Stu) who wants to present images straight out of the camera is going to struggle to compete with someone who utilises a lot of post shot manipulation, even someone who does minimum post processing is now at a severe disadvantage when it come to competitions.

May apply to a minority but certainly doesn't apply to me.
I used 35mm format for more years than I care to remember but I've now used APSC for that long that it's become totally natural, I don't even think about "equivalent" focal lengths anymore, for me returning to full frame would be just like learning to cope with APSC . This old dog had to learn new tricks once and refuses to re-learn the old ones again