Hello. You can use a tool named iOS Data Recovery from Tenorshare to recover the lost photos. You can use it to recover the photos directly from your iOS device. Here are detailed steps:
Step 1. Connect iOS device to PC & Select "Reccover Data from iOS Device"
First make sure your iOS device is switched on and connect it to PC with USB cable. Next launch iOS Data Recovery on your PC. The program will detect your iOS device. You'll then get a pop-up window asking you to tap "Trust" on your iOS device to trust this computer.
Step 2. Start scanning iOS device for lost data
When the software detected your iOS device, it will show you the interface as follows. Click "Start Scan".
Step 3.Preview contacts, SMS, notes, photos, etc.
Now all scanned files are on the program listed according to category. You can choose to "Check all" or "Only display the deleted items" and then decide which to recover. To save time, you can just selectively recover those you need.
Also if you have backuped the data with your iTunes you can follow the steps below:
Run the software and choose "Recover Data from iTunes Backup Files". It will automatically detect all the iTunes backup files in your computer. Tap the backup you need and click "Start Scan" button on the program interface to scan your itunes backup.
After scanning, the contents of your iOS device will be shown in categories in the left sidebar. Usually the scanning will take a few minutes or so. You can check to preview details of each category, check files you need and click on "Recover".
You can also restore the lost data from iCloud with the similar steps. If you haven't backuped them you'd better to choose recover directly from iOS Device to recover it.