toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (apertureFNumber != null) 'apertureFNumber': apertureFNumber!,
if (cameraMake != null) 'cameraMake': cameraMake!,
if (cameraModel != null) 'cameraModel': cameraModel!,
if (exposureTime != null) 'exposureTime': exposureTime!,
if (focalLength != null) 'focalLength': focalLength!,
if (isoEquivalent != null) 'isoEquivalent': isoEquivalent!,
};