def cam_com(exp, wellu, wellv, fieldx, fieldy, dxcoord, dycoord):
    """Add a field to the cam list.

    Return a list with parts for the cam command.
    """
    wellx = str(wellu + 1)
    welly = str(wellv + 1)
    fieldx = str(fieldx + 1)
    fieldy = str(fieldy + 1)
    return [('cmd', 'add'), ('tar', 'camlist'), ('exp', exp), ('ext', 'af'),
        ('slide', '0'), ('wellx', wellx), ('welly', welly), ('fieldx',
        fieldx), ('fieldy', fieldy), ('dxpos', str(dxcoord)), ('dypos', str
        (dycoord))]
