{HEAD ~ The eyepiece} can be brought to {TAIL ~ a photographing position} which is within the extent of adjustment of the dioptry 
brought to
{ HEAD ~ The eyepiece } can be brought to { TAIL ~ a photographing position } which is within the extent of adjustment of the dioptry
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH