The lens used in this study is a 90 diopter
ophthalmic lens that is produced for ophthalmologists.
Rick Fienberg and I both have added a full diopter
of myopia correction to our nominal prescriptions, and we both find that this has driven our respective visual limits down by about a half magnitude while greatly enhancing our views of the Milky Way.
of myopia at Hunkeler Vision Centers in Kansas City.
Features: 28-80mm motorised zoom lens, diopter
adjustment, infra red auto focus, LCD panel which indicates red eye reduction, fill-in flash, slow shutter sync, flash off, self timer and landscape mode facilities, automatic rewind, mid-roll rewind facility, auto battery shut-off, low battery indicator, tripod socket, carry case.
Use Raininer's 'A-lock' diopter
system to set and lock the eyepiece diopter
to your own specifications.
6 Availability Of Spherical Equivalent Dioptre Range : Plus 5 Diopter
To Plus 34 Diopter
Other features include dielectric-coated prisms for enhanced resolution, dual-focus knob with locking diopter
adjustments, and horn-shaped detachable eyecups.
correction is a useful feature to consider--rarely do both one's eyes come to the exact same focus, so having the ability to fine-tune the focus of one or both eyepieces will make observing a more pleasurable experience.
All three are rubber armored and feature twist-up eyecups with click-stop action on the right diopter
for precise focusing.