Log in or Sign up
Coin Talk
Home
Forums
>
Coin Forums
>
Ancient Coins
>
My Antioch Falling Horseman in extremely high detail
>
Reply to Thread
Message:
<p>[QUOTE="Kaleun96, post: 4972853, member: 92635"]Certainly! I'll try keep this somewhat brief as I could talk for days on this topic, but feel free to ask any follow up questions.</p><p><br /></p><p>In terms of hardware, I have an <a href="https://www.reddit.com/r/AncientCoins/comments/jd46hv/my_camera_setup_automated_focus_stacking_rig_video/" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://www.reddit.com/r/AncientCoins/comments/jd46hv/my_camera_setup_automated_focus_stacking_rig_video/" rel="nofollow">automated focus stacking rig</a>. It doesn't merge the photos together, rather it just allows me to set a "start" and "end" point for a sequence of photos and then automatically moves the camera very small amounts and takes a photo each time.</p><p><br /></p><p>A key point to understand is that with a macro lens on a camera your depth of field is much lower than what it is with a more normal lens (e.g. a 50mm prime). The depth of field can be a fraction of a millimetre, so when pointed at an object with depth (like a coin with high relief), only a fraction of the coin may be in focus. Focus stacking then aims to capture the entire coin in focus through multiple photos and then merging them into a single in-focus image.</p><p><br /></p><p>Increasing magnification also reduces field of view. So at 2x the camera sees a smaller part of the coin than if you were shooting it at 1x.</p><p><br /></p><p>In this case, I realised that at 2x magnification with my lens I would need four "substacks" of the coin for each side to capture it in its entirety. By this I mean I can photograph the coin in the top left, top right, bottom left, and bottom right and end up with four photos that have overlapping parts and when stitched together would show the entire coin. Each "substack" is then a sequence of photos at each of the four locations where I photograph the coin at different distances, to ensure I get all of it in focus.</p><p><br /></p><p>So the substacks are kind of capturing the depth of the coin and the four locations at which I make the substacks is covering the width/breadth of the coin.</p><p><br /></p><p>Each substack is combined into a single photo through focus stacking software (e.g. Zerene Stacker). After this, I have four stacked photos, each showing a portion of the coin with the entire coin in focus. I can then stitch these four stacked photos together using Microsoft's free Image Composite Editor. This is the "stack and stitch" process.</p><p><br /></p><p>After that, I clean it up a bit in Lightroom and then over to Photoshop to put both sides of the coin in the same image.[/QUOTE]</p><p><br /></p>
[QUOTE="Kaleun96, post: 4972853, member: 92635"]Certainly! I'll try keep this somewhat brief as I could talk for days on this topic, but feel free to ask any follow up questions. In terms of hardware, I have an [URL='https://www.reddit.com/r/AncientCoins/comments/jd46hv/my_camera_setup_automated_focus_stacking_rig_video/']automated focus stacking rig[/URL]. It doesn't merge the photos together, rather it just allows me to set a "start" and "end" point for a sequence of photos and then automatically moves the camera very small amounts and takes a photo each time. A key point to understand is that with a macro lens on a camera your depth of field is much lower than what it is with a more normal lens (e.g. a 50mm prime). The depth of field can be a fraction of a millimetre, so when pointed at an object with depth (like a coin with high relief), only a fraction of the coin may be in focus. Focus stacking then aims to capture the entire coin in focus through multiple photos and then merging them into a single in-focus image. Increasing magnification also reduces field of view. So at 2x the camera sees a smaller part of the coin than if you were shooting it at 1x. In this case, I realised that at 2x magnification with my lens I would need four "substacks" of the coin for each side to capture it in its entirety. By this I mean I can photograph the coin in the top left, top right, bottom left, and bottom right and end up with four photos that have overlapping parts and when stitched together would show the entire coin. Each "substack" is then a sequence of photos at each of the four locations where I photograph the coin at different distances, to ensure I get all of it in focus. So the substacks are kind of capturing the depth of the coin and the four locations at which I make the substacks is covering the width/breadth of the coin. Each substack is combined into a single photo through focus stacking software (e.g. Zerene Stacker). After this, I have four stacked photos, each showing a portion of the coin with the entire coin in focus. I can then stitch these four stacked photos together using Microsoft's free Image Composite Editor. This is the "stack and stitch" process. After that, I clean it up a bit in Lightroom and then over to Photoshop to put both sides of the coin in the same image.[/QUOTE]
Your name or email address:
Do you already have an account?
No, create an account now.
Yes, my password is:
Forgot your password?
Stay logged in
Coin Talk
Home
Forums
>
Coin Forums
>
Ancient Coins
>
My Antioch Falling Horseman in extremely high detail
>
Home
Home
Quick Links
Search Forums
Recent Activity
Recent Posts
Forums
Forums
Quick Links
Search Forums
Recent Posts
Competitions
Competitions
Quick Links
Competition Index
Rules, Terms & Conditions
Gallery
Gallery
Quick Links
Search Media
New Media
Showcase
Showcase
Quick Links
Search Items
Most Active Members
New Items
Directory
Directory
Quick Links
Directory Home
New Listings
Members
Members
Quick Links
Notable Members
Current Visitors
Recent Activity
New Profile Posts
Sponsors
Menu
Search
Search titles only
Posted by Member:
Separate names with a comma.
Newer Than:
Search this thread only
Search this forum only
Display results as threads
Useful Searches
Recent Posts
More...