A plane-against-the-evening-sky shot.
This is courtesy of my undisclosed lens, with the aperture wide open (focus set to infinity).
The image below represents a 50% crop of the original.
—Peter.
A plane-against-the-evening-sky shot.
This is courtesy of my undisclosed lens, with the aperture wide open (focus set to infinity).
The image below represents a 50% crop of the original.
—Peter.
Prosophos 
50% by length, width, or area?
-M.
Degrees Celsius.
Hopefully you accounted for altitude and atmospheric pressure.