- tag 0x0001 is CameraSettings (numeric LensType at index 22), not an ASCII name; real EOS 5D files never carry a lens name there
- read the lens name from 0x0095 (LensModel) and yield none when only the numeric LensType exists
- fixture now builds a representative maker note (CameraSettings table + LensType 178) and covers both byte orders plus the nameless case