Uploading an image results in © rendering as Â©.
As a test I populated all of the editable EXIF and IPTC fields in lightroom with ©. I checked the image with EXIF viewer and the Coded Character Set is UTF8. MySQL DB is utf8_general_ci
The following fields render © properly:
The rest render it as Â©
'dc:rights' => 'copyright', in meta.php fixes Copyright Notice under Meta Data, but not under EXIF Data.
Investigating the DB entry for an image yields the following
s:6:"credit";s:4:"Â©"; What I take from this is that © is being parsed as a 2 byte hex, hence string having a value of 4.