On my iPhone 7, I only have 76 photos and when I click manage storage, it says that photos are taking up 1.3 gb of storage, why is this?

On my iPhone 7, I only have 76 photos and when I click manage storage, it says that photos are taking up 1.3 gb of storage, why is this?

Look at the individual pictures for their size and resolution -- your average photo is almost 18 megabytes

Yes