>>4253518test charts have been a disaster for photographers because like most gear shit its a multivariable issue but the important parts are missing.
like field curvature is missing from test charts. and sampling rates give and take relationship to SNR and resolution is missing from equivalence. and how measurements of things like noise and resolution are not measured in ways that people care about (chroma and luma should be measured independently, line counting is totally irrelevant to 90% of people but rise distance is IMPORTANT)
But then the info gets too hard for the idiots known as photographers to digest. Remember these people can math themselves (they suck at math) into believing micro four thirds has 3 stops less “noise” than APS-C.