kilomatt wrote:

>
> I just got it back and they included a lense
> shade.
>

That shade is very unusual, one piece and even shading the viewfinder.
It sure isn't sexy. I appreciate all 3D World is trying to do, but am
not crazy about new features like the shade and new viewfinder that
increase the apparent size and bulk of an already large camera.

Dale Yingst

P.S. Dalia at Boise said that 3D World has stopped production for the
moment and is actively seeking feedback and suggestions. My feeling is
that 3D World is very responsive but then also develops those
improvements in a vacuum. I'm sure people have asked for shades, but
would anyone have suggested doing it the way they did, or would the
viewfinder shade reveal any glare? My suggestion is to make a lighted,
focusing hand viewer, now that they have developed a battery operated
light source for their new mounter. That would complete the cycle of
quality picture taking to quality viewing. Their focusing mechanism for
the new mounter is way too large and crude for a hand viewer, but at
least they now realize that focusing is desired. As far as the camera
itself, all I would like is an accessory lens panel down to about 55mm.
We were told that wider lenses than this were not possible due to the
lenses touching the shutters. Coming up with a concensis of desired
improvements and relaying that to Dalia or3DWorld may be helpful.

> Coming up with a concensis of desired
> improvements and relaying that to Dalia or3DWorld may be helpful.

Or me. I have talked to 3D World about a lighted focusing viewer and they
said they are working on it.

George

> Coming up with a concensis of desired
> improvements and relaying that to Dalia or3DWorld may be helpful.

Or me. I have talked to 3D World about a lighted focusing viewer and they
said they are working on it.

George

> If so, George, will it have an interocular adjustment?

Do you want it to have?

All I can do is give them your wishes for what you want the viewer to
have... Personally, I think it is nice to have adjustable interocular but
I can live with out it.

George

> If so, George, will it have an interocular adjustment?

Do you want it to have?

All I can do is give them your wishes for what you want the viewer to
have... Personally, I think it is nice to have adjustable interocular but
I can live with out it.

George

Hi George,

At 06:30 PM 7/18/2007, you wrote:

>Personally, I think it is nice to have adjustable interocular but I
>can live with out it.

Me too!

I'm thrilled that 3DWorld is working on a lighted viewer, but I don't
believe the advantages offered by adjustable lens separation can
justify the accompanying increase in cost of manufacture, especially
given my belief that new lenses would be required to do so while
focusing more closely than Infinity.

Ideally, viewer lenses should remain separated at a distance equal to
window separation + MAOFD + a little bit more (0.5mm?) to accommodate
OFD's that exceed MAOFD. 3DWorld's 75mm lenses in combination with
mounts having a 62mm window separation require a minimum lens
separation of 62mm + (75mm/30) + 0.5mm = 65mm. (The 3DWorld STL
viewer has a fixed lens separation of 64.5mm, by the way, omitting
the 0.5mm safety margin.) If the lenses are brought closer together
than window separation + MAOFD + 0.5mm over chips that remain
stationary relative to each other, the user's eyes must diverge to
fuse the Infinity homologs of views that have an OFD equal to (or
greater than) MAOFD + 0.5mm. A little bit of divergence is tolerable
among those of us who are rubber-eyed, but for others it will be fatiguing.

Moving the lenses in the opposite direction, farther apart than
window separation + MAOFD + 0.5mm, is much less of a problem, because
that only requires users to apply more convergence (a much easier
task for most people) and it would allow those with IPD's greater
than 65mm (like me) to enjoy the lack of distortion had when the eyes
are on-axis. If 3DWorld can incorporate an adjustable interocular
without increasing the overall cost by more than say 15% and without
compromising our desire for a focusing viewer (which I suspect would
be very hard to do), then I'd say it's OK, but they should not allow
a separation any less than about 63mm, in my opinion (a shift of
-2.0mm from the window separation + MAOFD + 0.5mm position).

There's another factor that will limit the range of adjustment at
both extremes: whether or not 3DWorld's 75mm lenses have a large
enough image circle to permit more than a couple of millimeters of
shifting over 52x52mm mount apertures, even when focused at
Infinity. Add focusing to the design and things get even more
difficult as we focus closer than Infinity, where the lenses will sit
as much as 17mm closer (at only 58mm from the chips) for an image
distance of 10-inches vs. the currently fixed image distance of
Infinity (where the lenses are at a distance equal to the 75mm focal
length). Things are already pretty tight in 3DWorld's fixed-focus,
fixed-interocular viewer. Using their current lenses, I seriously
doubt they'll be able to achieve focusing all the way down to a
10-inch image distance in the absence of an interocular adjustment,
much less with that adjustment.

Can someone who possesses 3DWorld's new mounting jig report how close
the lenses can be brought to the 52x52 mount apertures before the
corners are no longer visible (or the barrel distortion becomes
undesirable)? I can translate that measurement into an estimate of
image distance and angular magnification achieved at closest focus,
and from there, a rough guestimate of whether or not there's any room
for shifting the lenses.

Thanks,

Mike Davis

Bob Schlesinger writes:

> We might also make aesthetic
> suggestions (for example personally I'd like to see alternatives to the
> 1960s "silver" look)

Were you aware that the 3D World viewer comes in 12 different colors
including several faux wood-grains (I have one they called "peach
grain")? I can't seem to find the images of all the color options on
their website any more though. Does anyone know where they have hidden
that page or has it been removed?

Thanks,

David W. Kesner

I would suggest widening the mask inside the viewer. I widened the
openings in mine to 60mm each, with 2mm spacing between them. This enables
me to view "superslides" that show the entire width of the Stereflektoskop
chip, as well as wide slides incorporating double and triple depth windows
( I enclosed samples in Brian Reynolds' Folio II).

Another suggestion would be to make the diffuser easier to remove for
cleaning. I have broken off a couple of the tabs in my viewers.

Oleg Vorobyoff

> Another suggestion would be to make the diffuser easier to remove for
> cleaning. I have broken off a couple of the tabs in my viewers.

I have a couple extra replacement diffusers for anyone who needs them. (This
has happened to me too, so I got extra diffusers to have around).

George

--- In MF3D-group@yahoogroups.com, "David W. Kesner" wrote:

> Were you aware that the 3D World viewer comes in 12 different colors
> including several faux wood-grains (I have one they called "peach
> grain")? I can't seem to find the images of all the color options on
> their website any more though. Does anyone know where they have

hidden

> that page or has it been removed?
>
> Thanks,
>
> David W. Kesner
>

I discussed this with 3D World about two months ago. They said
colours other than silver were only available on special order where
the minimum quantity is 300 per colour ! They also told me that the
black viewer was actually a custom order.