why do the iphone 6 photos look terrible

Hey there dsod,

It sounds like your image quality is less than you expect on your iPhone 6. I would recommend you use the troubleshooting in the following article, named:

Get help with the camera on your iPhone, iPad, or iPod touch

There could also be a filter turned on which would change how the photos you take look. You can modify that with the icon that looks like 3 circles in the lower right corner:

Apply a filter: Tap to apply different color effects, such as Mono or Chrome. To turn off a filter, tap ,then tap None. You can also apply a filter later, when you edit the photo. See Edit photos and trim videos.

Take photos and videos - iPhone

Thank you for using Apple Support Communities.

Cheers,

Sterling