Camera can automatically focus on the subject you're capturing with the help of motor and sensors.
Touch Focus allows you to manually adjust the focus of the camera on to the subject, however it's only applicable on touchscreen devices.
HDR adds richness to the photos, which might not be natural but looks pleasing to the eyes. However, HDR should not be used in all situations especially when the subject is moving or the scene is having wide range of colors.
Panaromic photography allows you to capture the whole scene of up to 360 degress in one photograph.
Nokia Lumia 1020, 925, & 920 have PureView camera, for high quality shots in low-light.
Moto X has an extra pixel to capture brighter photos in low-light.
HTC One, One Mini, etc use ultrapixel camera with a larger sensor (2 microns) for impressive shots in low light.
Apple iPhone 5S has True Tone Flash for more natural-looking photos with flash and a large sensor (1.5 microns) for bright shots in low light.