Another day, another exhibition.  Actually two (or three if you count the one at the gallery where I had to collect a print later) at Tate Britain, to see Conceptual Art in Britain 1964 - 1979 and Painting with Light - Art and Photography from the Pre-Raphaelites to the Modern Age.  I've added links so that you can find out more about them and how long you have left to see them.  The image on the Tate web page for the Conceptual Art exhibition shows John Hilliard's 1971 image (actually 70) of his East German Praktica camera, which was the SLR I had that year before graduating to a Nikon, mainly for the better lenses.  Today the dome of the Tate's rotunda looked to me like some kind of lens as I took this photo, but with no evidence of any flare.