Mac 3 Different Photo Libraries

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Photos in macOS Catalina has an immersive, dynamic look that showcases your best photos. Find the shots you’re looking for with powerful search options. Organize your collection into albums, or keep your photos organized automatically with smart albums. Perfect your images with intuitive built-in editing tools, or use your favorite photos apps. And with iCloud Photos, you can keep all your photos and videos stored in iCloud and up to date on your Mac, Apple TV, iPhone, iPad, and even your PC.

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  3. Shared Libraries

My favorite method to merge two different Photos libraries is as follows: 1. Pick the 'main' library you want to drop the content into. You'll lose information such as your albums and other data besides the photos from the other library. 2020-4-6  PowerPhotos works with the built-in Photos app on your Mac, providing an array of tools to help you get your photo collection in order. Create and manage multiple libraries Instead of being limited to putting all your photos in a single library, PowerPhotos can work with multiple Photos libraries, giving you many more options for how to. How to Back Up iCloud Photo Library to a Mac. If you use Apple's Time Machine, then the libraries used by Photos and iPhoto are automatically backed up as part of every Time Machine backup that occurs. While that's a good starting point, you may want to consider additional backups, and here’s why. The word archive has different. A window will pop up with a number, which in my Mac’s case was over 236GB between a number of different photo libraries — Apple’s Photo Booth, Aperture, iPhoto, and Photos, just to name a few. All your photos on all your devices. ICloud Photos gives you access to your entire Mac photo and video library from all your devices. If you shoot a snapshot, slo-mo, or selfie on your iPhone, it’s automatically added to iCloud Photos — so it appears on your Mac, iOS and iPadOS devices, Apple TV.

A smarter way to find your favorites.

Photos in macOS Catalina intelligently declutters and curates your photos and videos — so you can easily see your best memories.

Focus on your best shots.

Photos emphasizes the best shots in your library, hiding duplicates, receipts, and screenshots. Days, Months, and Years views organize your photos by when they were taken. Your best shots are highlighted with larger previews, and Live Photos and videos play automatically, bringing your library to life. Photos also highlights important moments like birthdays, anniversaries, and trips in the Months and Years views.

Your memories. Now playing.

Memories finds your best photos and videos and weaves them together into a memorable movie — complete with theme music, titles, and cinematic transitions — that you can personalize and share. So you can enjoy a curated collection of your trips, holidays, friends, family, pets, and more. And when you use iCloud Photos, all edits automatically sync to your other devices.

The moment you’re looking for, always at hand.

With Search, you can look for photos based on who’s in them or what’s in them — like strawberries or sunsets. Or combine search terms, like “beach 2017.” If you’re looking for photos you imported a couple of months ago, use the expanded import history to look back at each batch in chronological order. And in the My Albums tab, you’ll find your videos, selfies, panoramas, and other media types automatically organized into separate albums.

Fill your library, not your device.

iCloud Photos can help you make the most of the space on your Mac. When you choose “Optimize Mac Storage,” all your full‑resolution photos and videos are stored in iCloud in their original formats, with storage-saving versions kept on your Mac as space is needed. You can also optimize storage on your iPhone, iPad, and iPod touch, so you can access more photos and videos than ever before. You get 5GB of free storage in iCloud — and as your library grows, you have the option to choose a plan for up to 2TB.

Make an edit here, see it there. When you make changes on your Mac like editing a photo, marking a Favorite, or adding to an album, they’re kept up to date on your iPhone, your iPad, and iCloud.com. And vice versa — any changes made on your iOS or iPadOS devices are automatically reflected on your Mac.

All your photos on all your devices. iCloud Photos gives you access to your entire Mac photo and video library from all your devices. If you shoot a snapshot, slo-mo, or selfie on your iPhone, it’s automatically added to iCloud Photos — so it appears on your Mac, iOS and iPadOS devices, Apple TV, iCloud.com, and your PC. Even the photos and videos imported from your DSLR, GoPro, or drone to your Mac appear on all your iCloud Photos–enabled devices. And since your collection is organized the same way across your Apple devices, navigating your library always feels familiar.

Resize. Crop. Collage. Zoom. Warp. GIF. And more.

Create standout photos with a comprehensive set of powerful but easy-to-use editing tools. Instantly transform photos taken in Portrait mode with five different studio-quality lighting effects. Choose Enhance to improve your photo with just a click. Then use a filter to give it a new look. Or use Smart Sliders to quickly edit like a pro even if you’re a beginner. Markup lets you add text, shapes, sketches, or a signature to your images. And you can turn Live Photos into fun, short video loops to share. You can also make edits to photos using third-party app extensions like Pixelmator, or edit a photo in an app like Photoshop and save your changes to your Photos library.

  • Light
    Brilliance, a slider in Light, automatically brightens dark areas and pulls in highlights to reveal hidden details and make your photo look richer and more vibrant.
  • Color
    Make your photo stand out by adjusting saturation, color contrast, and color cast.
  • Black & White
    Add some drama by taking the color out. Fine-tune intensity and tone, or add grain for a film-quality black-and-white effect.
  • White Balance
    Choose between Neutral Gray, Skin Tone, and Temperature/Tint options to make colors in your photo warmer or cooler.
  • Curves
    Make fine-tuned contrast and color adjustments to your photos.
  • Levels
    Adjust midtones, highlights, and shadows to perfect the tonal balance in your photo.
  • Definition
    Increase image clarity by adjusting the definition slider.
  • Selective Color
    Want to make blues bluer or greens greener? Use Selective Color to bring out specific colors in your image.
  • Vignette
    Add shading to the edges of your photo to highlight a powerful moment.
  • Editing Extensions
    Download third-party editing extensions from the Mac App Store to add filters and texture effects, use retouching tools, reduce noise, and more.
  • Reset Adjustments
    When you’ve made an edit, you can judge it against the original by clicking Compare. If you don’t like how it looks, you can reset your adjustments or revert to your original shot.

Bring even more life to your Live Photos. When you edit a Live Photo, the Loop effect can turn it into a continuous looping video that you can experience again and again. Try Bounce to play the action forward and backward. Or choose Long Exposure for a beautiful DSLR‑like effect to blur water or extend light trails. You can also trim, mute, and select a key photo for each Live Photo.

Add some fun filters.

With just a click, you can apply one of nine photo filters inspired by classic photography styles to your photos.

Share here, there, and everywhere.

Use the Share menu to easily share photos via Shared Albums and AirDrop. Or send photos to your favorite photo sharing destinations, such as Facebook and Twitter. You can also customize the menu and share directly to other compatible sites that offer sharing extensions.

Turn your pictures into projects.

Making high-quality projects and special gifts for loved ones is easier than ever with Photos. Create everything from gorgeous photo books to professionally framed gallery prints to stunning websites using third-party project extensions like Motif, Mimeo Photos, Shutterfly, ifolor, WhiteWall, Mpix, Fujifilm, and Wix.

To combine Photos libraries, open the source library and export the photos and videos that you want to keep. Then open the destination library (the one that you want to use as your main library) and import the photos and videos.

Choose a photo library

Here's how to open one of the multiple photo libraries that you might have on your Mac or on a connected external drive:

  1. Press and hold the Option key as you open the Photos app.
  2. Select the library that you want to open, then click Choose Library.

Photos uses this library until you open a different one using the same steps.

Export photos and videos from the source library

Open the source library, then decide whether you want to export your files as unmodified originals or edited versions:

Edited versions retain their edits when you import them. The advantage is that you don't have to recreate any edits; however, these files become the destination library's originals. This means that you can't revert to their earliest pre-import version.

Unmodified originals don't show any edits that you made when they were in the source library. This gives you flexibility for later editing, but recreating your edits might take substantial work.

How to export edited versions

  1. In the Photos app, select the photos and videos that you want to export. To select multiple items, press and hold the Command key while you click. To select a group of items in order, click the first one, then press and hold the Shift key while you click the last one. This selects all of the items between the two that you clicked.
  2. Choose File > Export > Export [number].
  3. An export dialog appears.
    • In the Photos section, set Photo Kind to JPEG, TIFF, or PNG. JPEG recompresses your photos, which may result in smaller file sizes. TIFF and PNG files are higher fidelity and may result in larger file sizes.
    • In the Videos section, choose a Movie Quality setting. This section appears only if your selected items include videos.
    • In the Info section, select the checkboxes if you want to preserve metadata and location data in the exported files.
    • In the File Naming section, set File Name to Use File Name and set Subfolder Format to either Moment Name or None. Moment Name creates a subfolder for each Moment that's represented in your selected items. This is useful if you'd like to create an Album in the destination library for each Moment. The None option exports all of the files directly into the destination folder.
  4. Click Export. A Finder dialog appears.
  5. Navigate to the location where you want to save the files, such as the Desktop or an external drive. Click New Folder if you create a new folder for your exported items.
  6. Click Export.

How to export unmodified originals

  1. In the Photos app, then select the photos and videos that you want to export. To select multiple items, press and hold the Command key while you click. To select a group of items in order, click the first one, then press and hold the Shift key while you click the last one. This selects all of the items between the two that you clicked.
  2. Choose File > Export > Export Unmodified Original.
  3. An export dialog appears.
    • If your photos include IPTC metadata (such as titles or keywords) that you want to keep, select the Export IPTC as XMP checkbox.
    • Leave the File Name setting on Use File Name.
    • Next to Subfolder Format, choose Moment Name or None. Moment Name creates a subfolder for each Moment that's represented in your selected items. This is useful if you'd like to create an Album in the destination library for each Moment. The None option exports all of the files directly into the destination folder.
  4. Click Export. A Finder dialog appears.
  5. Navigate to the location where you want to save the files, such as the Desktop or an external drive. Click New Folder if you create a new folder for your exported items.
  6. Click Export Originals.
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How to import photos and videos into the destination library

Open the destination library, then drag the folder that contains your exported items into the main area that shows your other photos and videos. When a green plus sign appears on your pointer, you can release the folder.

The photos in the folder are sorted into Moments based on their creation dates and locations. The videos are sorted based on the date you exported them from the source library.

If you created subfolders when you exported the items and you want to create an Album for each subfolder, follow these steps:

  1. In the Finder, open a subfolder.
  2. Select all of the photos and videos within the subfolder.
  3. Drag the items onto My Albums in the Photos sidebar.
  4. Name the Album in the highlighted text box that appears in the sidebar.
  5. Repeat for each subfolder.

Save space by deleting the source library

If you're sure that you've exported all of the photos and videos that you want to keep from the source library, you can delete it to save disk space on your Mac.

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First, open the Finder and find the source library that you want to delete. By default, photo libraries are stored in your Pictures folder. If you can't find the library, follow the steps to choose a library; the path to the selected library's location appears in the Choose Library window.

Arduino Library

Next, move the source library to the Trash. Then choose Finder > Empty Trash to permanently delete the files.

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