TRANSMISSION MASTER TO REFLECTION COPY - QUESTION

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John Howard
Posts: 25
Joined: Fri Jul 06, 2018 11:36 am

TRANSMISSION MASTER TO REFLECTION COPY - QUESTION

Post by John Howard »

I would like to make a transmission hologram and then use that as a master to make reflection hologram copies. I have carefully studied Graham Saxby's book diagrams and they always show a space between the two plates when making the copy (which I wonder about) and I am unsure of where the emulsion is in his diagrams.

So to clarify the process for myself, I have created the attached diagram which shows how I think it ought to work. My uncertainty, of course, is about panel 3. If any of you have experience making copies this way, I would be very grateful for any clues. Thanks.
TRANSMISSION TO REFLECTION.png
TRANSMISSION TO REFLECTION.png (26.78 KiB) Viewed 5883 times
Last edited by John Howard on Sun Apr 14, 2019 10:50 am, edited 1 time in total.
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

Re: TRANSMISSION MASTER TO REFLECTION COPY - QUESTION

Post by holomaker »

Notice in the repay of the reflection copy Saxby is using
A laser to replay it, probably due to restricted depth if you would use white light ....never tried it , should work !youll need to keep your object as close as possible to the film plane .
John Howard
Posts: 25
Joined: Fri Jul 06, 2018 11:36 am

Re: TRANSMISSION MASTER TO REFLECTION COPY - QUESTION

Post by John Howard »

"You'll need to keep your object as close as possible to the film plane."

Can you say why? I need it at 1.5 inches behind film.
holomaker
Posts: 772
Joined: Wed Jan 07, 2015 8:01 am

Re: TRANSMISSION MASTER TO REFLECTION COPY - QUESTION

Post by holomaker »

The deeper your image , depending on your light source the fuzzier it will get ...
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