Blaydese, thanks for looking and your interesting comments..! When I travel I take the minimum of equipment with me and a flash is definitely not one of them...! I am a 'straight' type of shooting guy so the orange filters etc is not really my cup of tea, as I usually shoot for B&W, but these sort of looked monochrome and therefore presented in colour. I have made some square crops as an alternative, that also worked well...