EF lens recommendations for aviation photography

[Stoney10]

Hello I would like to start plane spotting and aviation photography and wonders what good lense under 150 would be good I have a cannon T7 #T7dslr

[ebiggs1]

"... (using an) EF 800 f5.6 on a 1DX III body, around the equivalent of a 600mm focal length on your "crop sensor" T7, ...", would yield an equivalent FL of 1280mm. 🙂

However, I personally never consider "equivalent FL" any longer since post edit cropping yields basically the exact same results. There may have been a time it made some sense but with today's cameras and post editors not so much to none. I never liked it, though. 

For kicks and grins my Sigma 150-600mm f/5-6.3 DG DN OS Sports Lens equivalent FL would be 240-960mm if a person cared which I don't.

[ebiggs1]

And interesting but sad story concerning my father who was a USAF fighter pilot for 33 years occurred at our lake cabin in the mid 1970's. My father retired from the Air Force at Maxwell Air Force Base, Montgomery, Alabama in 1970, yes, after 33 years and several wars including WWII, Korea and Vietnam twice. Anyway most folks in the area knew this and him. One day a guy brought a home built to our Lake Jordan cabin.
The design was for a sea plane. One that can land or take off on water. The guy was not a pilot so he asked my dad to try it out. Well against his and my better (you would have to know my dad) judgment my dad tried to fly it. It was a short flight. When my dad returned and landed it, he told the guy to never try to fly it as it wasn't airworthy and was a death trap especially for a novice person.
We didn't give it much thought after that. However, several weeks later he happened to see a story in the news paper that a man had been killed in an experimental seaplane crash on a different area lake, Lake Mitchell, which is near Lake Jordan.

If you are going to get in one of these "experimental airplanes" you better know what you are letting yourself in for.