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Lomography Neptune Naiad 15mm f/3.8

Part of a "toy lens" system by Lomo.

The Naiad is part of the “Neptune Convertible Art Lens System” that’s made of a rear module and an interchangeable front optical group. In perfect Lomography style, no real-meaning technical info is given, and the “plus” you are buying is the “unexpected effect”. Despite this, the price is far away from a “toy lens”. Even the optical scheme ( 9 elements in 7 groups ) it’s not clear if it’s regarding the front element itself or the whole (front + rear) working lens. But I strongly suspect it has to be added to the 3 /3 rear group making it a 12 / 10 lens.
Declared Field of View is 135°, not specifying if horizontal or diagonal, from the examples it seem to be a fisheye projection, more than a “heavy barrel distortion rectilinear lens”, a very large front filter holder is available. Online tests say it’s giving good sharpness on the whole frame from 3.8 and that it’s low in contrast, like many vintage lenses.


Lens info
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12 / 10
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