My daughters want to buy me a birthday present. I don't want it to cost the earth but I would like to know which are the best filters for my Nikon D 90 with the Nikkor 18 - 105 mm zoom lens. I prefer landscapes but also like to take portraits and close ups of flowers and insects. I shall be moving to the South West of France where the light is strong and there are opportunities to take photographs of lightning.
All advice gratefully received.