Evidence-grade imaging sounds like a hardware upgrade. It is mostly a systems upgrade.
The camera matters, but so do timing fidelity, custody continuity, provenance preservation, derivative handling rules, and the ability to prove that the result remained inside a clean evidentiary lane from capture to use. A commercial customer may accept some ambiguity if the image is merely informative. Regulators, insurers, arbitrators, and public-interest reviewers usually do not.
That is why evidence-grade service remains expensive. The cost is not only in capture quality. It is in preserving a chain of trust that can survive hostile review after the fact.