canon 400d patima housing

[innocent bystander]

Hi there,

Wondering if someone can help,

I have a canon 400d with Tamron 17-50 lens and want to get a Patima housing and ports.

The barrel diameter is 72.7mm the lens extended is 112mm and shortest is 84.3mm.

Would the 10-22 zoom ring fit this lens (my 10-22 is 72.3mm diameter).

What combination of ports/extensions would work best ie. give least amount of free space at no extension?

Would there be much vignetting from a flat port?
I really don't want to go to dome port (cost).

Thanks in advance

Mark

 

[pakman]

I hate to say it but I think a 17-50mm lens would better off behind a dome...

I have a 400D and a 18-50mm Sigma lens. I use this exclusively behind a small dome and 40mm extension and this makes a great combo for those times when I'm not sure I'm gonna be shooting wide angle, fish portraits, or shy pelagics.

You would really be nerfing the wide angle side of that lens as I would suspect severe vignetting well before you got to 17mm with a flat port. Just my opinion. I remember when I first looked at the Patima 350D, I think their marketing pamphlets had suggested the flat port for the canon 18-55. (both their English and Korean webpages seem to be down right now, but here is a Taiwanese dealer that sells Patima FUN-IN Underwater Photographic Equipment ).

Maybe something like this would be better... Made for Nikon 18-70mm glass, but might be better suited for a wide zoom lens.

FUN-IN Underwater Photographic Equipment

 

[innocent bystander]

Thanks Pakman, I think your right.

The dome looks like the only way to go.

I was beginning to wonder if anyone else used this housing!