Hi,
I've moved the thread to the feature requests forum, since at the moment it is not possible to export markers in DXF format.
As a workaround I think that it is possible to create the point shapes in the estimated marker positions and export them to DXF, for example.
import PhotoScan
chunk = PhotoScan.app.document.chunk
if not chunk.shapes:
chunk.shapes = PhotoScan.Shapes()
chunk.shapes.crs = chunk.crs
for marker in chunk.markers:
chunk.shapes.addShape()
shape = chunk.shapes[-1]
shape.type = PhotoScan.Shape.Type.Point
shape.has_z = True
shape.vertices = [chunk.crs.project(chunk.transform.matrix.mulp(marker.position))]
PhotoScan.app.update()