Hello there, Daisy30uk.
It sounds like you're having issues with your camera and the photos taken being out of focus. The following Knowledge Base article offers up some great recommendations for troubleshooting:
Get help with the camera on your iPhone, iPad, or iPod touch - Apple Support
If your photos are blurred, out of focus, or have dark spots, try these steps:
- Make sure that the camera lens is clean. If you need to clean the lens, use a microfiber cloth. If you see dirt or debris inside the lens, take your device to an Apple Retail Store or Authorized Service Provider for more help.
- Make sure that there’s nothing blocking the camera lens. If you’re using a case, try removing it.
With iPhone 6 Plus, a metallic case or magnetic lens could interfere with optical image stabilization. If you have a metallic case or magnetic lens attachment, try taking a picture without it. Then compare the quality.
- Adjust the focus by tapping on the person or object in the preview screen. You’ll see the screen pulse or briefly go in and out of focus as the camera adjusts. In photo mode, try to stay steady when adjusting the focus. If you move too far in any direction, the camera will automatically refocus to the center. In video mode, you can adjust the focus before you begin recording.
- If the color seems too bright, or you see double-exposures of moving objects, make sure that HDR is set to Auto or Off. Tap HDR at the top of the screen to choose a different setting.

You can also reference the first steps mentioned in this article:
If an app you installed unexpectedly quits, stops responding, or won’t open - Apple Support
In particular:
Close the app and open it again.
Turn your device off and back on.
- Make sure that you're using latest version of iOS.
- Open the App Store and tap Updates.
- If updates are available, tap Update All.
- If asked, enter your Apple ID password.
You might need a Wi-Fi connection to update some apps.
If the issue persists, Apple has determined that, in a small percentage of iPhone 6 Plus devices, the iSight camera has a component that may fail causing your photos to look blurry. Use the following link to determine if your iPhone qualifies for this Replacement Program:
iSight Camera Replacement Program for iPhone 6 Plus - Apple Support
Thanks for being a part of Apple Support Communities.
Kind Regards.