So, is there an official definition of 'Visual with the field' or is the definition based upon the circumstance ? i.e. for me, entering via the Pirton VRP intending to land, identifying the tower and buildings is sufficent to allow me to accurately position onto say right base 26, whereas someone intending to overfly and therefore needing to be kept clear of landing IFR traffic, will need to be able to identify say the 26 threshold.