Taken the same time as yesterdays shot, here's the same field featured in one of my earlier posts (albeit at another time of year).  While taking this shot a geared-up cyclist (donning high-vis lycra shorts & top) stopped to chat about photography and specifically asked if I was using a UV filter.  I said I was and he informed that was good coz rapeseed transmits a whole lot on the UV level of the spectrum...  did you know that?