Tongue photos - color accuracy when projecting

[Guest guest]

For me, a huge issue is that digital projectors distort the color so badly,

I can only use a limited number of tongue slides in the classroom. This was

true with at least five different projectors that I have used. Has anybody

found a projector that will show colors accurately? Short of bringing a

huge monitor to class, I just don't know how to show tongues that aren't

horribly distorted, especially being too yellow. When looking at tongue

coats, that makes the presentation useless.

 

- Bill

 

.............................................

Bill Schoenbart, L.Ac.

P.O. Box 8099

Santa Cruz, CA 95061

 

office phone: 831-335-3165

email: plantmed

.............................................

 

 

 

[Guest guest]

Just three years ago I was working for Kodak doing product development

work. There was a need for a color-correct digital projector. After

devoting some resources and time to the search, nothing was found that

fit the bill. Something better may have been devised since then, but in

general companies producing digital products have been slow in getting

quality equipment out, due to engineering being run by marketing in

virtually all companies.

 

Eventually, something good will come out.

 

Steve

 

Bill Schoenbart wrote:

 

> For me, a huge issue is that digital projectors distort the color so

> badly,

> I can only use a limited number of tongue slides in the classroom.

> This was

> true with at least five different projectors that I have used. Has anybody

> found a projector that will show colors accurately? Short of bringing a

> huge monitor to class, I just don't know how to show tongues that aren't

> horribly distorted, especially being too yellow. When looking at tongue

> coats, that makes the presentation useless.

>

> - Bill

>

> ............................................

> Bill Schoenbart, L.Ac.

> P.O. Box 8099

> Santa Cruz, CA 95061

>

> office phone: 831-335-3165

> email: plantmed <plantmed%40earthlink.net>

> ............................................

>

>

[Guest guest]

There are so many steps and opportunities for color distortion between the

tongue and the projection in a class. Don't those projectors offer a manual

calibration setting for color temperature or hue? Seems to me that I've seen

those. They must have them, because even a very true projector has to deal

with changing ambient lighting and color environments.

 

I would think too, that if the slides are all of similar saturation and hue

that when an image of " normal " is projected, then and only then will images

of pale or purple be recognized as different from pink. For teaching

purposes, we need to compare the abnormal images to the normal. The eye will

understand the difference.

 

Secret is to begin with clear and well-exposed images that have similar

lighting conditions to each other, but not necessarily to the present

conditions in the classroom.

 

-al.

 

On 4/10/07, Bill Schoenbart <plantmed2 wrote:

>

> For me, a huge issue is that digital projectors distort the color so

> badly,

> I can only use a limited number of tongue slides in the classroom. This

> was

> true with at least five different projectors that I have used. Has anybody

> found a projector that will show colors accurately? Short of bringing a

> huge monitor to class, I just don't know how to show tongues that aren't

> horribly distorted, especially being too yellow. When looking at tongue

> coats, that makes the presentation useless.

>

> - Bill

>

 

 

 

--

 

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