On Apr 16, 5:21=A0pm, "Rob." <m...@[EMAIL PROTECTED]
> wrote:
> PixelPix wrote:
> > On Apr 15, 7:53 am, PixelPix <m...@[EMAIL PROTECTED]
> wrote:
>
> >>Hi folks,
>
> >>I am chasing a second Olympus Macro Rail to update my homemade pano-
> >>head to something a little more hi-tech.
>
> >>I managed one off eBay Oz for $50 recently, but a second is proving
> >>rather elusive. =A0If anyone knows where one is hiding please let me
> >>know.
>
> >>Cheers
>
> >>Rusty
>
> > Oly bellows would do also. =A0;-)
>
> So what's the setup like then and how are you calibrating it?
>
> r
Here's a pic with my single row bracket attached to put the cam into
horizontal posi.
http://pixelpix.com.au/samples/PanoHead_v3.jpg
I don't actually use it like that, I was just having a play.... when
used like that it creates a little flex in the main bracket, so
normally the cam would sit in ****trait orientation direct on the macro
rail and this eliminates the flex, thanks the center of gravity being
not so far out.
Calibrating...... the horizontal off-set that allows for the
"base2lens axis" distance was simply measured and the mounting hole
drill accordingly (allowing for macro rail). The vertical height to
the macro rail can be anything and I have simply allowed enough room
for the rail to rotate through a full 360 degrees.
The nodal points (as adjusted for with the macro rail) have been found
by conducting tests and comparing near and far objects with changed
camera rotation. Once found, the offsets for these have been marked
on the rail.
I want the second rail so that I can use it (base & rail only) as the
bottom arm of the large black angle. I intend to machine an alloy
bracket that mounts as the vertical arm to hold the top most macro
rail. This will make for a lighter/stronger setup that can be adjust
for different "base2lens axis" distances.
BTW... as you see it, if I remove the large black bracket and place
the macro rail direct on the tripod, I have a single row pano head.
Cheers
Rusty
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