`python createoverlay.py Z6III --frameline 16:9` \r
Creates a 16:9 frameline with default line and fill characteristics for a Nikon Z6 III as a PNG file, then converts the PNG to a NIkon Z6 III NEF raw. The resulting PNG is opened in your system's default image viewer.\r
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`python createoverlay.py Z6III --gridline 4x4` \r
Creates a 4x4 gridline with default line and fill characteristics for a Nikon Z6 III.\r
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`python createoverlay.py Z6III --frameline 16:9 --frameline 1:1,dashedline=50-50,linecolor=#ff0000` \r
Creates a 16:9 solid-line white frameline and a 1:1 dashed red frameline.\r
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## Automatic output filename\r
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Each column/row is demarcated by vertical and horizontal lines, so the number of lines will be the column/row values minus 1. For example, here is a `--gridline 4x4`\r
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Note there are three horizontal and vertical lines, creating 4 columns and 4 rows.\r
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1. Go to the PHOTO SHOOTING MENU and enter the Muliple exposure option.\r
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3. Set the multiple exposure options to:\r
* Save individual pictures (RAW) to "ON"\r
* Overlay shooting to "ON"\r
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4. Use `Select first exposure (RAW)` and navigate to the overlay raw you'd like to use.\r
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5. Half-press the shutter to return to shooting mode. \r
### Shooting with the Multiple Exposure feature\r
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The camera previews the multiple exposure by compositing the overlay raw you selected over the active scene.\r
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When you take a picture the camera stores two images on the card - a composite jpg that combines content from the overlay raw with the scene content, using whichever composting mode you selected, and a raw imge, which has only the scene content that is no different than if it were shot outside of the multiple exposure mode.\r
After every multiple exposure photo the camera resets the configured overlay raw, requiring you to set it again to use for the next photo. I've developed the following shortcut that helps workaround this limitation, or at least reduce it to a set of fixed camera control inputs that you can memorize and use without having to look at the menu system.\r
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1. Add Multiple exposure to the top of your MY MENU by going to `MY MENU` -> `Add items` -> `PHOTO SHOOTING MENU` -> `Multiple exposure` and choosing the first position in your MY MENU. You can also use `Rank items` to reposition `Multiple exposure` to the top of the menu.\r
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3. Configure a function control to `Access top item in MY MENU` by going to `CUSTOM SETTINGS MENU` -> `Controls` -> `Custom controls (shooting)` and selecting a control to assign\r
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Select the desired control and assign it to `Access top item in MY MENU`.\r
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3. Ideally you want your overlay raw to be the first file on the media card. This is because the camera always defaults to the most recent raw when you're prompted to `Select first exposure (RAW)`. By having the overlay as the oldest raw, you can always select it via a single right-button click on the multi-control dial because that will wrap the selection around from the newest to oldest image.\r
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Obviously these are more clicks than ideal but the sequence is easy commit to muscle memory and perform without having to actually look at the menus while you perform them.\r
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