Thanks for the great advice and images!!!
@DeadJohn I will try your suggestion on AF. Today I managed to get this guy in which the AF seems to have nailed it, I didn't do any PP on these at all about from what RawTherapee does by default which is run the AmaZe anti mosaicing algorithm on the images.
But I think you are correct about hitting atmospheric haze. This time the 150mm Irix shots look a little softish, though it maybe just the slow shutter at 1/250s as I don't have very steady hands or it could be that the shorter focal length is seeing more atmospheric haze.
This is the 300mm Pentax lens test from today:
_IMG0514.jpg - Google Drive
EXIF: 1/400s, f/8, ISO100
By comparison the Irix 150mm Tele-Macro lens:
_IMG0551.jpg - Google Drive
EXIF: 1/250s, f/8, ISO100
This is something I got by chance while looking for low flying planes having just taken off:
_IMG0649.jpg - Google Drive
It's a crop from the Irix 150mm. EXIF: 1/250s, f/8, ISO800. There is a little bit of PP done but not much. The little guy came out too cute.....
@redpit from Greece?? Endaksi kala
Amazing photos!! Thank you for the offer, I will definitely ask if I need anything
---------- Post added 04-26-22 at 10:26 AM ----------
Quickly just add one observation though. I think the K1's frame buffer is a little small....
I have been using ContinuousH mode and after a few actuations the shutter will stop firing and the camera will just clicking. The card read light is then on for a while until the buffer has been written to storage. It's not the card type or speed that's the issue but probably as I'm treating the K1 like it was a Nikon D6 or Z9 (the high performance sports camera lines)....