> On Mar 10, 2021, at 10:42 AM, Toine <to...@repiuk.nl> wrote: > > That's what I do (with the KP and DA300). Would love to see an > uncropped version. I can't make up my mind if the 150-450 with or > without the K1 would make any difference. I usually crop a lot (75% or > more), amazingly without any loss in detail. >
I’ll just let my inner nerd run rampant. This is all conjecture that could be completely invalidated by direct experience. Going from a 300 to a 450 would effectively double the number of pixels on your final cropped image. As to quality of pixels, these days my gut is telling me that what counts is the total number of photons, so in low light 300mm at f/4 is probably pretty close to 450 at f/5.6. My guess is that in good light, the 150-450 would be an improvement in the final image over the 300, particularly if you get the good TC. The 150-450 would also have an advantage in flexibility. With both lenses wide open, some of the advantages might be lost, that would depend a lot on how many of your pixels exceed your noise tolerance threshold. TLDR; my guess is that the 150-450 would do no worse, and in many situations would do better. To support that hypothesis, if the DA300 did a better job, Paul would use one of those. As to camera bodies: I don’t think the K-1 would give you any major advantage when birding, because you would be mostly shooting in crop mode. It can be handy to see what is outside of the frame, but I’ve found that my K-3 is generally a somewhat better APS camera than my K-1. It looks as if the pixel performance per sq mm of the K-3 iii will be significantly better than the K-1. I certainly hope so with a 5 year newer sensor, and the overall image performance should still be better. It should be *much* better with several Moore’s cycles difference between the two. To phrase Raoul Duke’s attorney, Dr. Gonzo, I’d advise you to start looking for a good deal on a used 150-450. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
