An objection at the time the evidence is offered serves to focus the issue and to protect the record
Kelly v. New West Federal Savings (1996) 49 Cal.App.4th 659, 669

work in progress

Review of the trial court's use of evidence on appeal

The abuse of discretion standard is not a unified standard; the deference afforded to the trial court varies according to the aspect of ruling subject to review. A trial court's findings of fact are reviewed for substantial evidence, conclusions of law are reviewed de novo, and the trial court's application of the law to the facts is evaluated under the arbitrary and capricious standard which is the most deferential. Haraguchi v. Superior Court (2008) 43 Cal.4th 706, 711-712 [76 Cal.Rptr.3d 250, 182 P.3d 579]