More Photo Elasticity
Apr 24, 2021 09:22:14 #
Since the response was favorable to seeing results of this technique, I've put together a few more images for viewing. All that is required is a (in this case) a laptop computer screen, a CPL on the camera lens, some sort of plastic as the subject. I use the guest bathroom for a dark environment space and place a piece of black foamkore over the computer keyboard (it has small lights that would show otherwise) which is the base for the subject material, a tripod, and a short lens (14-42)
Black or white, or gray are the general background colors that you end up with by turning the filter on the camera while in a dark environment. Talk about endless hours of fun! Tomorrow's set will explore this a little further and even exhibit how the sun can be used in this elasticity! Intrigued?
Black or white, or gray are the general background colors that you end up with by turning the filter on the camera while in a dark environment. Talk about endless hours of fun! Tomorrow's set will explore this a little further and even exhibit how the sun can be used in this elasticity! Intrigued?
Apr 24, 2021 09:39:28 #
pixelmaven wrote:
Since the response was favorable to seeing results... (show quote)
What is the light source, I missed that in your first posting?
Thanks;
Jim
Apr 24, 2021 09:45:01 #
JBRIII wrote:
What is the light source, I missed that in your first posting?
Thanks;
Jim
Thanks;
Jim
In the first posting, the apple was lit with a small flashlight covered with white tape as a diffuser.
Apr 24, 2021 09:47:00 #
Apr 24, 2021 10:48:28 #
pixelmaven wrote:
Since the response was favorable to seeing results... (show quote)
I'm intrigued. Is a CPL on the camera lens a circular polarizer? What is different about a laptops illumination?
Apr 24, 2021 10:55:04 #
Fotoartist wrote:
I'm intrigued. Is a CPL on the camera lens a circular polarizer? What is different about a laptops illumination?
The laptop screen is polarized already. (Built-in) Thus you are utilizing two counter polarizers to create the colors.
Apr 24, 2021 11:58:07 #
Thanks so much for the additional details. A fascinating process and result! I added this thread to the links doc (pinned to Digital Artistry's first page).
Apr 24, 2021 12:20:25 #
There is a lot of interesting things that can be done using polarization photography. There are cameras made which take multiple photos are different polarization angles and combine them. Can be done taking sequential photos only. I believe can be used to show stress in objects for example.
These posts remind me of all the interesting things I want to do if the day were only 10x longer!
These posts remind me of all the interesting things I want to do if the day were only 10x longer!
Apr 25, 2021 10:56:57 #
A fun experiment with this setup would be to add some stress to a plastic object and watch how the light color changes. The plastic fork would be good to use. Just squeeze the prongs together. You could also do this with a glass rod, but it takes about 10 times as much stress to create the same effect.
This phenomenon, called photoelasticity is also visible in the back window of some automotive glass when the sun angle is right to polarize the light, especially when you are wearing polaroid sunglasses.
This phenomenon, called photoelasticity is also visible in the back window of some automotive glass when the sun angle is right to polarize the light, especially when you are wearing polaroid sunglasses.
Apr 26, 2021 13:11:49 #
These are really wows! I love your creativity and willingness to experiment. This is a great example of being artistic in camera! Amazing work!
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