4x21 and 4x30 have mirror prism combo optics. Actually 3.5x21. 18.5 deg fixed focus
I think the 5x25, 7x25?, 10x25 and the zoom are normal. Can't remember.
Excellent film now Adventures in Babysitting ch 15.
4x22 Dowling and Rowe 16.5deg. 4x genuine.
Foton 5x25 (5x30 actually) is about 12.2 deg. 5x genuine.
Last edited by Binastro : Saturday 2nd April 2016 at 21:00.