The lighting was horrendous. The usual mix of disco colours
I am having some issues with Lightroom not having a profile for this camera. The JPEGs look lovely, but Adobe's interpretation of the RAW file is causing me some extra work. Need to get to the bottom of that. I'm a bit new to Lightroom, so it's probably me, but I have heard there are some issues.

I've just sat down to process the images from a weekend wedding shoot.
Here's a quick edit of one of the images I wanted to quickly send to the bride, before the whole experience is watered-down by the hundreds of snaps being taken behind me and indiscriminately uploaded to Facebook
The weekend was spent hand-holding the Zed and it was perfectly happy in this role. I now have some new muscles tho'
3200iso, SMC 645 55mm f2.8 at 2.8, 1/60th TAV.
No noise-reduction, edges sharpened with high-pass.
Click-through to 1440px version.

Barrie, that first shot is absolutely cracking. Love the processing

Ha ha, sorry that didn't come across well did it.
I do genuinely mean good effort finding those locations. That is half the job right there
I think the pictures are nice and I found it frustrating that the processing had rather taken over from the image (for me).
This business of sharpening on resize has come up numerous times. As soon as I noticed photoshop had adopted this ridiculous default years ago, I posted here explaining how to turn it off.
Some of the the colours (blues mainly) do seem unnatural and over-contrasty. Not sure how to quantify this? Just how I am viewing it. It's a subjective thing and if the prints come out the way your monitor is displaying them then it's all good

Good effort getting out and finding those locations, it looks fabulous.
I like number 5; nice muted colours and because it looks the least fiddled-with.
Most look a little over-sharp, particularly the distant objects and sea which can't (shouldn't) be that sharp due to the amount of atmosphere in the way. It's robbing them of perspective and some of the colours are a bit queer and contrasty for my taste.

Using the Metz 58 AF-2, I was having some problems with high speed sync. It just didn't seem to be working at all (I usually assume it's me).
But after updating the firmware on the AF-1 and 2, I can confirm that it works fine now.
It's taking a little while to get to grips with the Zed, but I like it more and more each day

What's 'a focus tracking issue'?
The 300* is a slow-focusing lens and combined with a K5 (at least), is very prone to laborious hunting, even pre-focused on a bird in a featureless blue sky! But that is a camera issue surely.

Anyone got any hot tips on flogging photos to the media?
Or recommend and trustworthy and effective agency to handle the work?

Pentax bodies and lenses are so small it's easy to carry two bodies and minimise all the lens switching and missing shots. However, they should really be the same model otherwise you will find yourself favouring the best body to the extent that you end up swapping lenses anyway. K3 an K7 is such a jump I doubt you would ever use the K7 again for anything casual.
It would make a good workhorse in the studio or for test shots rather than using up the actuations on your K3

Focus peaking is a splendid thing. It works really well on the K01
The K5ii stands up well against even the 645z for high ISO stuff, retaining saturation where the 645 retains details but looses saturation (irretrievably). Can't comment on the K3 but if you don't need the big files...