- Cambridge (UK), Cambridge University Library, ms. Ff.iii.30: page range 251v-256r
- Acquired: donated by the estate of L.G. Westerink
- Film: 35mm Black-and-white Negative
Psellus De Iride
Library label (photo, first frame of microfilm):
Class-mark: Ms. Ff 3.30
Ratio Reduction: 13
Very light scratches running lengthwise, but not affecting the text, which is clear and quite readable.