Gudge
Contributor
They are basically the same lens with different mounting requirements. From Inon America web site:The Type I appears to be for cameras using threaded 67mm adapter. Does anyone have any experience with this or recommendations on whether Type I or Type II is better for my setup?
There are two versions of the UWL-100 lens: Type I and Type II.
Choosing between a Type 1 or Type 2 lens depends on your camera/housing system, whether it has a 67M threaded mount on its outer port, and if an adapter ring is necessary.
Best check with your supplier or Inon America before purchasing the one you need to fit your housing:
Type 1: INON America - Product Catalog
Type 2: INON America - Product Catalog