In this thread, https://answers.arnoldrenderer.com/questions/20626/control-maya-modifying-camera-attributes-on-camer... I asked about preventing maya from modifying camera attributes, but a better question to ask would have been for whether there is a way for custom camera in Arnold to identify themselves as orthographic.
Hopefully, through a metadata type command, i.e. some variations of AiMetaDataSet* (probably string or bool). Any chance this, or anything that gives the same result through whatever means, in a DCC agnostic manner exists?
(Or as a less ideal, but still better than nothing a metadata option per DCC? Like being able to a have AiMetaDataSetStr*(nentry, NULL, "maya.specialFormattingOfArbitraryMayaAttributeThatWillBeSetWhenThisCameraTypeIsSelected", value);
Cheers,
Alan.