The video must normally be a full screen view of a cropped image of the full view. The only way a camera can change its field of view is by
1.) Changing lenses
2.) Using an optical zoom
3.) Digitally zoom (cropped image)
If it appears more wide angle "fish-eyed" now, it was cropped before and the programming or some feature selection has now changed. I doubt a backup camera would have a mechanical zoom lens!
I prefer the wide angle so this is good news for me.
2009 Murano LE AWD - Traded
2003 Excursion 4x4 7.3 PSD - DIESEL
1985 Mercedes 300SD - DIESEL
JGC LIMITED 4x4, CRD, MAXSTEEL-BLK/FROST INT, LG2, ORA2, BLK HTR, NAV., CD - DIESEL!
Harley FLSTFI '04