honest or lasting support, or loyalty,(Cambridge)
the quality of being loyal to somebody/something (Cambridge)
The best ink-jet printers can reproduce photographs with amazing fidelity.(Cambridge)
The story is told with great fidelity to the original.(Oxford)
Amazing Fidelity
Great Fidelity
fidelity (of something)
Loyalty
Constancy
Inaccuracy
Disloyalty
Fidelity bond