This is simple magnification comparison between Nauticam SMC (Super Macro Converter) vs SubSee +10 and +5
(Please note, this is only a magnification test, not a IQ or sharpness test).
All images shot on Canon 5D Mark III with a 100mm IS L macro lens (focus locked at maximum magnification).
More images with SMC : http://ejlabs.net/nauticam-smc-lembeh/