Hi guys,

I have the chance to buy second-hand a System Macro Port and a Fisheye dome for my Seacam D200.

The problem is that the owner is not able to tell me what type of threads do the ports have.

He has been using them with a Seacam housing for the Canon A2 film camera.

I do think that Seacam´s finer threads were prior to 1997, with the new bayonet system thereafter. Could anybody confirm to me whether this ports would fit my newer Seacam housing? (he gives me references like 210 xxx and 230 xxx for each port, but I do not have a clue of what do they mean)

Please help me out. Price is really atractive for this usually expensive pieces of equipment

The systemport and fisheye ports don't and have never used a bayonet mount.

I can't tell you about the thread size - sorry.

James

Hello Pedro

The references that you have been quoted are Seacam's Part reference numbers. Looking back through my old lists the references you quote appear to relate to the older ports which do not have the same port mounting as the ports used on current digital housings. Seacam describe the older ports as 'thread' mounting and these have a smaller diameter and much finer thread than the current 'bayonet' mount which is a larger diameter and actually resembles a much coarser and rounded thread. So based on the numbers quoted the answer is that these appear to be the older ports which will not fit onto your D200 housing. (That said, I think that Seacam did offer an insert which allowed the older ports to be used, but as far as I can remember this was a factory fitted item and had to be specified when the housing was first ordered - I doubt that it could be retrofitted).