effective_focal_length   90 modules/dng.c      int effective_focal_length;
effective_focal_length  244 modules/dng.c      {0xA405, T_SHORT|T_PTR,1,  (int)&exif_data.effective_focal_length},    // FocalLengthIn35mmFilm
effective_focal_length  769 modules/dng.c      exif_data.effective_focal_length = get_effective_focal_length(shooting_get_zoom()) / 1000;