I only saw F-22 show once. At that time I did not have DSLR.
"無奈Sigma 150-500mm 遠端光圈大於F8時畫質就慘不忍睹", really? I having been thinking of buying this zoom for quite a while.
I don't know what kind of setting you were using. I use manual setting when in air show. I fix the ISO at 200, aperture at 8 and speed at 1/1000. In some cases I would set aperture at 5.6 and speed as low as 1/500. I found this kind of combination is not bad for clear sky and thin cloudy one. It could cover most of the photos' requirement.
You know me if you knew me. You are not required to know me if you did not know me.