Canon R-F10 Manuel d'utilisateur télécharger pdf (Page 22)

6.3 Fixed Cross Cylinder Test for Single Eye

Touch , ±0.50 (Digital Refractor) will automatically turn to the right aperture

of Spherical, and the of chart projector will also be in the right position

automatically, and then you can start the tests.

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Canon R-F10 Manuel d'utilisateur Page 22