Sigma 70 mm macro and wet close up lens

I have a IKELITE housing for a Canon 450D camera, in macro photography I work with a Sigma 70 mm macro lens and a IKELITE flat port 5508.70 ¿Some one have experience with a Sigma 70 mm macro lens and a wet close up lens, like MACROMATE lens or SUBSEE lens?

Thank you very much for the information.

Pedro

I have a Subsea lens and use it with a 90mm macro on a Nikon D80 it focuses very close to the port. I tried it on a 50mm macro and I can't get 1:1 with it place I actually get closer without it. Not sure if it would work very well with a 70mm macro lens.

The amount of magnification achievable from any given diopter is directly related to the focal length of the primary lens it is used in conjunction with - the longer the focal length, the more magnification is possible (when comparing lenses with the same reproduction ratio capability, i.e. 1:1 macro lenses).

I've personally never used the lens you speak of, but if the minimum focus distance is ~16cm (257mm - 95mm = 162mm, from Sigma website), the SubSee will definitely increase magnification by some amount, since it makes focusing possible between ~4cm-10cm which wasn't possible in its absence.

So, to synopsize: It is possible to use the SubSee with your 70mm Sigma lens, however, you won't achieve as high a level of magnification as you would with the much more common Canon 100mm lens (or Nikon 105mm).

Keri

Thanks for the information, I will buy a Canon 100 mm macro and I don´t use my Sigma 70 mm macro lens with the close up wet lens.

Best regards

Pedro