Modifying this control will update this page automatically
    Photos User Guide
- Welcome
 - Get started
 - 
        
        
- Browse your photo library
 - Browse photo collections
 - View photos and videos
 - View photo bursts
 - See photo and video information
 - 
        
        
- Find photos and videos by date
 - Find and name people and pets
 - Find group photos and videos
 - Find photos and videos by location
 - View photos and videos you recently saved
 - Find your travel photos and videos
 - Find receipts, documents, recently edited photos, and more
 - Find screenshots, Live Photos, and more by media type
 
 - Use Live Text to interact with text in a photo
 - Use Visual Look Up to learn more about a photo
 - Isolate and share a photo’s subject
 - Delete photos and videos or recover deleted ones
 - Remove duplicates
 - Hide photos and videos from view
 - Add titles, captions, and more
 - Add keywords
 
 - 
        
        
- Editing basics
 - Crop and straighten photos and videos
 - 
        
        
- Add filters
 - Adjust light, exposure, and color
 - Remove distractions and imperfections
 - Remove red-eye
 - Adjust white balance
 - Apply curves adjustments
 - Apply levels adjustments
 - Adjust definition
 - Adjust specific colors
 - Reduce noise
 - Sharpen a photo
 - Apply a vignette
 - Change Photographic Styles
 - Change a Portrait mode photo
 
 - Write or draw on a photo
 - Use other apps when editing in Photos
 - Change a Live Photo
 - Change a video
 - Edit a Cinematic mode video
 
 - Photos settings
 - Keyboard shortcuts and gestures
 - Copyright and trademarks
 

Adjust definition in a photo or video on Mac
You can change the definition settings of a photo or video to add contour and shape as well as midtone definition and local contrast.
Go to the Photos app
 on your Mac.Double-click a photo or video, then click Edit in the toolbar.
Click Adjust in the toolbar, then click Definition
Drag the slider until you’re satisfied with the results.

        Thanks for your feedback.