Hello everyone, My question is as follows. Is the distance of a field flattener to the objective lens as crucial as the distance to the camera sensor to the flattener lens ? I have a 72 ed refractor, in the picture of the supplied flattener that I don't have, looks shorter than the flattener that I do have !! So setting the distance from the sensor is easy to get, but the distance from the objective is a fixed distance ? Any help will be appreciated
Ice..