Re: Slide Spotting....

[P3D Alexander Klein <klein@xxxxxxxxxxxxxxxxx>]

P3D Jeremy Hinton  <Jeremy.Hinton@xxxxxxxxxxxxx> writes:

> 
> ......Happy new year, all.
> 
> I am confused about the 'Standard' for spotting (colour coding left 
> and right, with a spot which also shows the correct orientation of 
> the slide for viewing or projection) 2 x 2 x 2 slides.
> 
> My feeling is that the spot should go in the lower left corner as 
> you view the slide (as on a realist format slide).The spot is 
> then visible to the projectionist if he slide is projected. Colour 
> can code left and right, but even for folks with good colour vision,
> the view of the slide itself in a projection theater might cause 
> problems. Do you projectionists prefer spot on the left of the 
> left slide, and spot on the right of the right side?. .

There's even a standard here in Germany (DIN 4531, is there anything
NOT standardized in this country??), but since it's also quite logi-
cal and compatible with what people do ...

for real stereo slides (2 images in one frame): one (red) dot in the
lower left corner.

for 2 x (2" x 2") or 2 x (50mm x 50mm): one red spot in the lower left
corner of the left image and one green spot in the lower left corner
of the right image (easy to remember: like your anaglyph glasses:
left=red, right=green; or if you're a captain: left=starboard=red,
right=port=green)

for one stereo pair in one 2" x 2" (50mm x 50mm) frame taken with a
beamsplitter on one lens: one dot in the lower left corner (left image
is on tle left)

for one stereo pair in one 2" x 2" (50mm x 50mm) frame taken with a
"beamsplitter" which only enlarges the stereo-base of a camera-attach-
ment with two lenses: two dots in the lower left corner (left image is
on the right).

> I am confused about the colour coding because both a 'red for right' 
> and 'red for left' Standard have been mentioned in the Stereo Soc 
> Bulletin/Journal. They are directly conflicting. The author of the 
> more recent version acknowledges the problem (apparently due to the 
> conventions for anaglyph glasses/images) but is so diplomatic to the 
> previous writers that I remained confused. 

Usually, the color doesn't matter, it's only important when you're
using two 2x2's (50x50). I usually use a red dot (with a felt-tip pen).

> Slide spotting and titleing (?sp) are not mentioned in the version of the 
> Slide.Mounting.ps.File which I have.
> 
> Is there a real standard?
> Can someone lay it out clearly? (Thanks Bob!)   

Hope this helps. If you need this in more detail for the FAQ, please
contact me off-list after February 17th.

alex
http://www.stereoscopy.com


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