avoid tilt problems all UFC parts are manufactored very precise. Please hold in mind that some camera manufactorers build in the sensor not
so pretty exactly so you may have to turn the push/pull screws from the RASA anyway.
Okay, after setting the length of the S70 VariLock to 18,8mm (please controll it by using a good caliber) you should have a good start. Or set it
to 19,5mm when using 2mm thick filters. As a rule of thumb the focus point gets lay out to extra focal at a third of the filter thickness (~0,7mm)
because of refraction. To stay homo focal and to receive lights it is of advantage using a clear glass or UV/IF filter.
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|Optical length (mm)||15 - 20|
|Inner Diameter / Clear Aperture (mm)||65 mm|
|Outer Diameter||82,1 mm|
|Inner Connection (lens sided)||Dovetail ring clamp, S70|
|Outer Connection (eyepiece/-camera-sided)||Dovetail ring, S70|
|Type of Adapter||Extension, Variable|