I don't use the crop mode on the K1but do crop heavily sometimes,

Very heavy crop from a K1 + Pentax 150 - 450 lens ISO 1600




Small crop K3ii + Sigma 100 - 300 Lens ISO 100

The first and last work for me, nicely done

Go just for " Spot " David

[/quote]Dont think I've tried spot focusing with BBF because I struggle to keep birds in the centre. When you use BBF and spot focus do you have to keep the plane in the centre of frame for BBF to stay locked on it?[/quote]Not generally, but it helps to keep the largest part within the spot focusing area. BIF images with pentax is more difficult imho than perhaps other manufacturers, its a skill that takes honing and the success rate perhaps isn't as many as canikon, but when you do get it right, its worth it !!




The Hawk is a tad noise, shot at 1600 ISO ( K3ii )

The sample images look pretty good to me even as small as they are. When I use BBF, and its generally on larger metal birds in flight than the feathered variety, I have spot focusing enabled.

They are Buzzards John, well captured

The K1's good imo up to ISO 6400, I again fairly regularly run it at ISO 3200.

Agree with Mike-P as above, I use the plug in from Nik collection for cleaning up noise

I've run my K3ii @ ISO 3200 fairly often particularly with fast moving jets, the files are pretty good and do clean up in post, I though I'd run it higher but cant find any examples and again all in camera processing is turned off for the same reasons as Mike-P

4 x Wines glasses set in line and a split black and white background

With a lead