Select your longest focal length and compose a portrait shot fairly tightly within the frame in front of a background with depth. Take one photograph. Then walk towards your subject while zooming out to your shortest focal length. Take care to frame the subject in precisely the same way in the viewfinder and take a second shot. Compare the two images and make notes in your learning log.
This time the subject is Sir John Betjeman at the St Pancras station (London).
My second attempt is the bust of Nobel Laureate Rabindranath Tagore in the Gordon Square Garden (London).