Old Nodal Point Adapter
Yuval used to shoot with a home made alluminium multi-row nodal
point adapter on the Manfrotto's 300N. There are no pictures of
that construction. Since moving to fish-eye lenses for full panoramas,
he uses Agnos MrotatorC.
The Agnos MrotatorC features an oblique nodal point adapter to
maximize the use of the sensor surface. It makes possible to shoot
a full spherical panorama in a single row also with dSLRs whose
smaller sensor cuts away at the top and bottom of the full circle
of the Sigma 8mm.
Although it was originally designed for Nikon. As of June 25, 2005,
the manufacturer's website
claims compatibility with Nikon D1, D2, D70, D100, Canon EOS
300D, 10D, 20D and Fuji S1, S2, S3.
The MrotatorC comes in two variations, both of them suffer
from a major drawback: weight. It is very heavy and thick iron.
MrotatorCP
The slightly more expensive MrotatorCP features a Manfrotto rapid
connect system 2 plate (RC2).
The trade off is flexibility for precision as the additional element
is more prone to misalignements between assembling and disassembling.
MrotatorCS
The camera is connected directly to the nodal point adaptor with
a tripod mount. A little transversal bar is fixed on the adapter
to keep alignement between assembling and disassembling.
A great idea but the model delivered to Yuval is a poor execution.
It does not work with the Canon 350D + Sigma 8mm. The transversal
bar can not be fixed in the front and there is not enough space
in the back. A longer plate would solve the problem.
Improvements
Lengthen the slit for the tripod mount. As it is now, it does not
work for the Canon 350D.
Lengthen the slit for the lateral shift of the nodal point adapter.
To use it for the Canon 350D it had to be turned upside down. In
the process, the bubble level is lost. Agnos promised to
deliver a replacement adapter with a bubble level on both sides
but never did.
Lighten the adapter, use alluminium. Even after cutting away a
big chunck of unnecessary iron at a local metal workshop, the adapter
is still too heavy.
Weaknesses
The MrotatorC does not allow for Zenith and Nadir shots.
The nodal point adapter is the weak link in the combination and
Yuval intends to build a replacement, in alluminium.
Next: New Nodal Point Adapter
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