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Member Since 21 Feb 2013
Offline Last Active Feb 27 2017 11:38 PM

Posts I've Made

In Topic: Nikon 10-24 & Sea&Sea

20 October 2016 - 01:53 PM

Hola Gus,
Yes the Marcelo' s combo is equivalent to Er20L+Er40L. The new S&S ring series are "L" named 'cause the security lock inside the ring, but they offer the same extension of SXER (20mm) and ER40 (40mm). Sea&Sea also has introduced a new ER30L (30 mm) and finally they offer a secure and varius extension ring system.
In any case don't trust in sea&sea lens chart, it's incomplete and contain mistakes.
I shot with MDX housings and I've tried different options with different lenses, in my experience with rectilinear zoom wide and dome port 240 (old type and new one) I've obtained best results when the front lens is quite complained with the base of the dome port. This empiric regula guarantee clear shots and also improoved using the new corrective lens Sea&Sea M77.
I give you the sets that I have used on dome port 240, most of those are not documentated in s&s lens chart

Dx sigma 8-16 --> ER40: quite good
FX Nikon 17-35/2.8 --> ER20 + ER40: quite good
FX sigma 24/1.4 Art --> M77 & ER40: very good
FX Nikon 18-35/3.5-4.5 G --> M77 & ER20 + ER40: very good

I suppose that Nikon 17-35 can give better results using M77, unfortunately last summer I crashed the lens on rocks (and me too) so I was unable to try it; I've purchased the cheaper Nikon 18-35 G and it surprised me giving great quality pictures BUT NOT BY SEA&SEA LENS CHART INDICATIONS!! S&S suggest to use only the ER40 in combo with M77 lens. I've tried it shooting very orrible pictures: internal dome reflections and poor sharpness in the corner. Great result, thank you S&s. I've added ER20 extension and everything changed: no inner reflections and hight sharpness all over the frame.

In your case I suggest the M77 and Er40+ ER20 , but don't miss to consider ER40+ER30 it could surprise you.
I hope to be usefull

In Topic: canon 11-24mm f4l usm

07 October 2016 - 10:51 PM

Sea&Sea produce a specifical kit (dome 240+extension ring+ zoom gear) to fit the 11-24 in MDX Canon Housing.

I'm a nikon user, I'm waiting to try the newest Sigma 12-24/4 ART in my MDX-D800, in case it will be possible.

In Topic: Rectilinear wide angle for Nikon DX

06 September 2016 - 12:31 PM

Sorry, I've forgot to tell that the sigma 8-16 run in AF very well on Nikon D7200 camera.
IMHO Nikon in the D500 cameras introduced some particular controls in the AF drive which reduce the compatibility with specific production of other manufacturer, it's sadly but no news under the sun (or below the surface :) )

In Topic: Rectilinear wide angle for Nikon DX

05 September 2016 - 11:02 AM

Hi Adam,
My sigma 8-16 AF run perfecly on my two D800 and of course on my old D300. I've shot for two weeks with D500 trying all my lenses and recording problems only with sigma 8-16. Meter data and aperture are correctly controlled by D500, except the AF hsm motor which doesn't give any sign of life. I guess the lens needs a firmware update, ehm ... I hope. In the near future I plan to meet the sigma italian dealer and I'll ask him about this.

In Topic: Rectilinear wide angle for Nikon DX

03 September 2016 - 05:16 AM

I've tried my sigma 8-16 on Nikon D500 but Autofocus doesn't run. The camera and the lens probably are incompatible. It's not a good news for nikon users.