Retrieving permanently deleted pics on an iphone six plus.

You do have a way out. Read more...

Create Multiple backups on iTunes for the same device. (By default iTunes creates incremental backup over the existing backup such that you only will have one backup per device on iTunes)

How to create Multiple Backup for the same device.

1. On iTunes Click on Manage Backups
2. Right Click on a Backup and Click Archive
3. Click Backup Now.
4. You will see a fresh backup will get created See the GIF below

1. Restore from Backup dated Date1 (Archived)
2. Retrieve the Photo(s) and store it separately
3. Restore from Current Backup Date3

Hi,

did you have a previous back up?

If you have a back up, so you can retrieve them --- > https://support.apple.com/en-gb/HT204184

If not I think that you have definitely lost your photos.

Do you have a backup?

The question is when did you backup on iTunes and when did you delete...Read on...

Let us assume...

Date1 : Backup date

Date2 : Photo Deletion Date

Date3 : Current Date / Restoration Date

Given that --> Date1 < Date2 < Date3 

Risk of restoring on Date3: You may lose data between the Date1 & Date 3

Thanks SravanKra for your explanation. Now it's clearer.

thanks Sravan