Aerial shot of London in the 1920s by photographer and pilot Alfred G Buckham. This is a stunning photo.
The clarity is amazing, but then he’d have been using a camera with enormous glass-slide negatives and a lens to match (and maybe there was just a little bit of retouching to crisp up the more distant roofs and spires…)
I also have a feeling the aircraft (a fairly distinctive-looking Armstrong Whitworth Argosy airliner) was added to give a more “aeronautical” look to the photo, because what looks like the very same aircraft in the very same position appears in a different photo, of Lincoln Cathedral…
Take a look at his other photos in Google Images or this Telegraph picture gallery; they’re amazing. And smile at the way a lot of them include little aeroplanes that aren’t getting the same light as everything else… :-)