Please note: This adapter is meant only for use alongside the Astrodymium Ring System - it will not work without it.
Get autofocus for your Rokinon/Samyang 135mm lens!
The ZWO EAF adapter for the Astrodymium Ring System will allow you to electronically control focus on the 135mm lens. This opens up the possibility of unattended/automated imaging sessions, where you don't have to worry about focus shift due to temperature or filter changes.
The Astrodymium Ring System is the only autofocusing solution on the market that has the choice of where to position the ZWO EAF on the 135mm lens.
Please note that there are pros and cons to each location. Most users should choose the side-mounted version, but refer to the following table for more details to consider:
All printed parts for the EAF adapter are made out of PETG plastic that can handle temperatures of up to 75C (149F), and down to -25C (-13F).
What's included (see each picture for specifics):
- 1x Timing belt
- 1x Metal pulley
- Printed parts (Focus ring, eaf bracket, etc)
Lens, dovetail bar, Ring System, and ZWO EAF are not included and only shown for illustrative purposes.
Please see the link below for important information in regards to shipping (opens in a new window).
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