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Kamera lens
''Kamera lens'' is a unicellular, flagellate organism and the only species in the genus ''Kamera''. Though the species has been known for centuries, it is poorly understood. Its systematic position within the Eukaryota is uncertain.
==Anatomy, nutrition and reproduction==
''Kamera lens'' is a free-living, swimming, heterotrophic organism. It is 6 to 7 by 2.5 to 3 micrometers on average 〔H. M. Woodcock: ''Observations on Coprozoic Flagellates: Together with a Suggestion as to the Significance of the Kinetonucleus in the Binucleata'', In: Philosophical Transactions of the Royal Society of London. Series B, Vol. 207, 1916, p. 395-397〕) and ovate, the base of both its long flagella is below the tip (subapical). There is only one nucleus.〔 Ultrastructural characters are not known.〔David J. Patterson, Naja Vors, Alastair G.B. Simpson, Charles O. Kelly: ''Residual Free-Living And Predatory Heterotrophic Flagellates'' In: Residual Free-Living And Predatory Heterotrophic Flagellates In: Illustrated Guide to the Protozoa, 2nd Edition. Vol. 2, Society of Protozoologists, Lawrence, Kansas 2000, ISBN 1-891276-23-9, p. 1302-1328.〕
''Kamera lens'' lives as a saprobiont〔 and can be found in hay infusions. William Saville Kent reported spore-masses of it in such an infusion in 1880.〔William Saville Kent: ''A manual of the infusoria, including a description of all known flagellate, ciliate, and tentaculiferous protozoa, British and foreign and an account of the organization and affinities of the sponges'', Vol. 1, 1880, p. 135-142〕
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