Geograph - photograph every grid square

As an experiment, a series of photos was taken from the 9:16 Chiltern service out of Warwick Parkway for London Marylebone.
It was a Diesel Multiple Unit with double glazed windows.
A small patch of window was cleaned both on the inside and on the outside panes of glass, large enough to accommodate the camera lens. The side chosen was the left hand side, the one by the platform. It would be very hard to clean the outside of the window on the other side.
The camera used was a Canon 550D with 15-85mm IS lens, and ultra violet filter.
The camera was set on shutter priority on 1/1000 sec at ISO 400. This yielded apertures of between f4.0 and f9.0 at various points in the journey.
The auto focus was turned off, and the focus was set manually onto infinity. The lens image stabilisation was left switched on.
The lens was set at 15mm, which is 24mm full frame equivalent.
The camera was held approximately level with the lens filter pressed hard against the inner window where the clean patch was.
Whenever a likely image presented itself the shutter was fired. No attempt was made to look through the viewfinder or use the live view screen.
Being unable to use a lens hood, or shield the lens with a hand, some images exhibited lens flare. Most so affected were discarded; a couple cropped to eliminate it.
The resulting images were processed from camera raw using Photoshop CC, and located using local knowledge of the route and WTP?
My conclusion is that perfectly good images can be taken out of trains, such that you might not even realise they were from trains, with a bit of care and fairly ordinary equipment.
The key ingredients are:
1. Fast shutter speed
2. Clean windows
3. Eliminate reflections by pressing lens to window.
4. Wide angle lens.
5. Post processing to straighten/crop/adjust exposure.