Re: [photo-3d] Digest Number 383

[mramstad@xxxxxxxxxx]

Mark,

I have written an experimental program for interlacing images, but haven't
finished it because I don't know enough about printing lenticulars.

Using my ink jet printer, I find that the physical dimensions of the image
changes depending on whether I am printing in Landscape mode or Portrait mode.  I
know it is relatively easy to add a fine adjustment to the printing dimensions,
but I don't know how to get the absolute dimensions correct for all the different
printers available.  How much do you rely on absolute dimensions when printing
lenticulars?

Of coarse, ink jet printers are completely unsuitable for lenticulars because the
ink diffuses across the lines.  But, are there any consumer level printers which
are suitable for printing lenticular?  I guess that for a two image lenticular,
the printer would need to be capable of  keeping lines separated at a density of
100 lines per inch (assuming a 50 lenticles per inch).

In the case, of say a 10 image lenticular, one would need a printer capable of
printing and keeping separate 500 lines per inch.  For a 8 inch width lenticular,
the printer would have to be capable getting the dimension correct to one part in
10,000.  I can program that, but I don't know what some unknown printer would do.

When interlacing images for lenticulars, I assume that the width of the resulting
image should scale with the number of images.   For example, if you have ten
800X600 images that you want to interlace for a lenticular, the resulting digital
file should be 8000X600 (a really wide file).  But, I assume that real
lenticulars are made with much higher resolution files which require at least 5
megs.  So the resulting interlaced file would be 50 megs.  Does this sound
right?  I can also imagine needing 200 megs.

So my point is:  For $1099, sure I'll write a program to produce the files, but I
can't guarantee that your printer could print the file correctly.  In any case,
I'd be interested in knowing what your requirements are and what type of printer
you would use.

Monte
Physicist
www.pokescope.com

Mark wrote:

>
> Also you have no way of fine-tuning the lines per
> inch of the interlaced image in order to optimize the resulting photo.
> Im still looking for a decent interlacing program under $1100.00, wish me
> luck.....
> Mark H


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