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The Lighting Setup No One Expects to Work on Ancient Coins
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<p>[QUOTE="Denis Richard, post: 26543275, member: 112673"]I don't know if there are cameras that will do this in-camera. It wouldn't surprise me if there were, but I've never looked. I use Nikon gear, and none of my cameras do that. There's software that will capture the focus stack for you, or at least do a frame-by-frame capture with you. I've used Helicon in the past, and it was fine, but in the end, I found it faster and easier to do it myself. I start at the front of the coin and move the focus to the back. My viewfinder sees f2.8, but my camera is set at f14. This means the area I see in focus is smaller than the actual depth-of-field captured. Knowing this, as long as I move the focus based on the f2.8 area, there's plenty of overlap to make the focus stack work effectively. Photoshop has tools to assemble a focus stack, though not with a single button, so I made an action to do it. A word of caution: focus stacking is not perfect, so my action includes a built-in stop to let me check certain areas with conditions that are prone to stack failure. If you shoot enough of these, you get to know where focus stacking can fail. In those cases, I manually adjust the masks.[/QUOTE]</p><p><br /></p>
[QUOTE="Denis Richard, post: 26543275, member: 112673"]I don't know if there are cameras that will do this in-camera. It wouldn't surprise me if there were, but I've never looked. I use Nikon gear, and none of my cameras do that. There's software that will capture the focus stack for you, or at least do a frame-by-frame capture with you. I've used Helicon in the past, and it was fine, but in the end, I found it faster and easier to do it myself. I start at the front of the coin and move the focus to the back. My viewfinder sees f2.8, but my camera is set at f14. This means the area I see in focus is smaller than the actual depth-of-field captured. Knowing this, as long as I move the focus based on the f2.8 area, there's plenty of overlap to make the focus stack work effectively. Photoshop has tools to assemble a focus stack, though not with a single button, so I made an action to do it. A word of caution: focus stacking is not perfect, so my action includes a built-in stop to let me check certain areas with conditions that are prone to stack failure. If you shoot enough of these, you get to know where focus stacking can fail. In those cases, I manually adjust the masks.[/QUOTE]
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