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Buhl Optical Multiplexer


The Multiplexer
We use "Buhl mobile multiplexers", and "Buhl Tyrone multiplexers" for the highest quality video transfers available.

Mobil Multiplexer


Buhl optical systems form an intermediate "aerial" image from one of the source projectors. The television camera "looks" at this image in mid air, creating the brightest and most colorful image possible.

Optical Path
Optical Path
Explanation of Field Lens and Rear Projection Screen

Illustration A shows that without a field lens or a screen at the image plane, only the light coming through the very center of the image gets into the camera lens. The corners are not illuminated. Only a small circular field is visible.

Illustration B shows that when the image is projected onto a rear projection screen, it can be seen by the unassisted eye as well as the video camera, but there is considerable light loss due to the screen's bend angle. Image quality is lost due to grain in the rear projection screen

Illustration C shows that a field lens located at the aerial image directs light from all parts of the field lens into a small circle. When the camera lens is placed at this circle, the entire field is illuminated. This is the system we use for the highest quality image.


Unsolicited Customer Testimonial:
I have a bunch of regular 8mm movies which I want to have transferred probably to DVDs. I will need to edit the movies by loading them into Adobe Premiere 6.5 and rearrange sequence, add voiceover, etc. What do you recommend doing with my 8mm movies to make this possible with minimum 'fuss'? Do you do files that can be transferred directly to Premiere? I have about 2000 ft of film dating back to 1954 and it needs some work on my part. You suggestions would be appreciated.

By the way I got your URL from a friend who has done business with you and is very pleased with your service.

Bob Feutz
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