Re: [photo-3d] Re: Slip-in mounts?

[drdave@xxxxxxxxxx]

Dr. T. writes:

> The core of the method is that you align the chips on the
> RBT jig.  Once you have done this, you have very little
> control to correct things during flipping/transfer. I
> know some people try to rotate or adjust the RBT jig
> over the Spicer mount but there are limited degrees of
> freedom, i.e. rotation or up/down shift.  You cannot make 
> any individual chip adjustments.

All this alignment is done on the RBT jig and not only does not need to 
be done, but shouldn't be done, on the flipping/transfer. If there are 
horizontal problems (window violations) then move the chips closer or 
farther apart on the jig; if there are vertical problems then use a 
different pin bar combinations - remember that there are three pin bar 
sizes avaialable (5, 10, and 20 1/100th) that allow a great deal of 
adjustment in 0.05mm increments - if it requires more than this you 
have a problem with your camera that needs to be fixed; if you have a 
rotational problem then it is your camera once a gain that needs to be 
fixed - this problem would have to be taken care of the same no matter 
what mount or system you used - you need to free float the chips to 
correct.

> Also, because the
> size of the RBT and Spicer openings are similar, it is
> difficult to see how are the chips aligned w/respect to 
> the Spicer and not RBT mount.

I disagree, it is very easy to know how you are aligning the jig 
aperture to the Spicer apertures. It is not like you are using 
different sizes or placements - the jig is always placed exactly the 
same so if you can do it once you can do it every time.

> The only way to assure with certainty that the chips
> are mounted properly is to mount directly on the final
> mount.  But, as we know, this is not easy with the Spicer
> mounts.

Once again I have to disagree. I have mounted litterally thousands of 
images using this method and find it consistently reliable. Perhaps 
those that are having problems just do not fully understand the method 
the way I am doing it.

I am just about finished mounting 14 5p rolls for a friend and I only 
had to redo a total of 4-5 images. That is only about a 1% error rate.

I am still working on a better tutorial that will be placed permanently 
on a website(s) and possibly even a video. Once these are done and 
available anyone will be able to precision mount to exhibition 
projection standards quickly and easily.

That's all for now,

David W. Kesner
Boise, Idaho, USA
drdave@xxxxxxxxxx