A Threadfin Butterflyfish (Chaetodon auriga) at Swansea Bridge, The Entrance, Australia on the 04.05.06 using Olympus C7070.
Photocomp May '06 - Novice
Allows keeping same subject size in the LCD monitor as if you were at 1cm from the subject. Rear male base screw 46mm. Allows a 1/1 ratio at 20cm from the subject.