An exhibition of Ansel Adams photographs is on at the National Maritime Museum in Greenwich until April 28.

We duly took our eldest, who likes to take the odd photo.

Sadly, the exhibition was heaving. There was neither space nor time to dwell.

So we escaped into the side room showing a 1983 BBC television interview with Adams.

I struggle to think of another artist able to explain their creative process with such easy grace. Grayson Perry, maybe?

Whatever, we were entranced, notably by this clip, in which Adams gets excited about the new creative opportunities about to be opened up by what he terms ‘electronic’ photography.

This was from 1983, remember. Adams was 81 years old.

He had spent his working life slaving in darkrooms and under the hood of quarter plate cameras, perfecting his craft. Yet his mastery of an analogue craft counts for little compared with his excitement about the new frontiers of his artform soon to be opened up by digital technology.

There’s a lesson in there somewhere.