Hi all,
So let me begin with this has been a long long struggle for me trying to achieve perfection, so I've come here to find out if that isn't actually possible after all. I'm talking months of waiting for equipment to arrive, hours and hours of fiddling with angles and lighting.
My aim is to produce a setup that enables me to photograph many 100s of coins, after a lot of experimenting with "normal" lighting I came across Axial or Front Directional lighting and though it could be the answer! I am unable to post links as this is my first post, but a simple google for "axial lighting photography" should give anyone who isn't aware the setup I'm referring to.
The issue I'm facing is what I call "ghosting", this is where (after a lot of head scratching! I've found that there is a duplicate image reflecting down from the back plan of the glass. This can be seen in the first image attached. I've used 2mm and 3mm glass, and the "ghost" image is offset a little further on the 3mm glass which tells me it's coming from the back plane.
I have purchase single sided AR coated glass and the result is actually worse, I have no idea why.
The second image attached shows a much fainter ghost, but it is still there. My main concern here is that i'm trying to produce the highest quality images I can for archival purposes, and this overlay even at say 5% opacity, will cause the whole image to have a slight blur over it.
I'm here really to find someone else who uses this technique and has come across the same problem, or if someone uses the technique without these issues to share their setup with me!
Thanks in advance.
So let me begin with this has been a long long struggle for me trying to achieve perfection, so I've come here to find out if that isn't actually possible after all. I'm talking months of waiting for equipment to arrive, hours and hours of fiddling with angles and lighting.
My aim is to produce a setup that enables me to photograph many 100s of coins, after a lot of experimenting with "normal" lighting I came across Axial or Front Directional lighting and though it could be the answer! I am unable to post links as this is my first post, but a simple google for "axial lighting photography" should give anyone who isn't aware the setup I'm referring to.
The issue I'm facing is what I call "ghosting", this is where (after a lot of head scratching! I've found that there is a duplicate image reflecting down from the back plan of the glass. This can be seen in the first image attached. I've used 2mm and 3mm glass, and the "ghost" image is offset a little further on the 3mm glass which tells me it's coming from the back plane.
I have purchase single sided AR coated glass and the result is actually worse, I have no idea why.
The second image attached shows a much fainter ghost, but it is still there. My main concern here is that i'm trying to produce the highest quality images I can for archival purposes, and this overlay even at say 5% opacity, will cause the whole image to have a slight blur over it.
I'm here really to find someone else who uses this technique and has come across the same problem, or if someone uses the technique without these issues to share their setup with me!
Thanks in advance.
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