Subal ND70 + Sigma 12-24 + SWB dome

[FreeShark 0]

Hi Guys:

 

I was thinking of buying a Sigma 12-24 Lense for my Nikon D70 + Subal housing.

 

Could anyone provide some feedback about using this lense with the Subal SWB dome port.

 

Thanks

[james 0]

Hi,

 

I have this lens, but I use it with a Seacam housing but I'm sure the same considerations apply. I use the largest dome port I can get, as for a lens this wide, the larger the dome port, the less blurring in the corners you will get.

 

HTH

James Wiseman

[Ryan 48]

The front shade of the lens (attached) is too large to fit through subal extension rings.

 

Is there a reason you need full frame? If not, your money might be better spent on the Nikkor lens, or waiting for the smaller sigma DG zoom...

[james 0]

Good catch Ryan. Does the 14mm Sigma f2.8 fit through there?

 

Cheers

James

[Ryan 48]

Yes.

[FreeShark 0]

The front shade of the lens (attached) is too large to fit through subal extension rings. 

 

Is there a reason you need full frame?  If not, your money might be better spent on the Nikkor lens, or waiting for the smaller sigma DG zoom...

<{POST_SNAPBACK}>

 

Thanks Ryan

 

Will the Nikkor 12-24 go with the SWB dome? If so with what extension rings?

[UWPhotoTech 0]

The Sigma 12-24 will work with Subal Extension Rings. Ryan is correct that the hood will not pass through the extension ring but the lens will pass through.

 

Here's the installation procedure:

1: Install the camera body onto the tray and place in housing

2: Install the Extension Ring onto the housing (40mm w/ 8" Dome)

3: Pass the lens through the extension ring and attach to the camera

NOTE: This is done blind so you really need to be comfortable with lens installation.

4: Install the Dome Port

 

In most cases a Zoom Gear is not necessary as the Zoom Drive on the housing will couple right against the Rubber Grip on the Lens Barrel.

 

I completely agree with James, you will get much better results with the 8" Dome Port with this lens.