Portraits of Big birds

Big birds give us the opportunity to work from a distance and some locations such as the Reserve at Marazion marsh tend to demand it with the distance from the road boundary to the waterline being a challenge to all but the finest lenses that Canon and Nikon produce, Working with  500mm lens fitted with a 1.7 converter to achieve a focal length of 850mm produces the opportunity to reduce distance without losing to much quality.  Working from a good strong tripod fitted with a gimble head allows for flexibility of movement for subject location while controlling vibration the ever present enemy of long focal length lenses.    Long lenses also give us the opportunity from a distance to regain details of behaviour, action and reflections to enhance portrait photography without disturbing wild subjects such as the ones below that grace Marazion Marsh on a daily basis