Search found 7 matches

by James_Sorenson
Tue Dec 25, 2018 12:00 am
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

Sorry for the long delay. Weather has been bad. But since my last post, I have been out quite a few nights and my solution did the trick. My lens is a Rokinon 135 f/2 and that is coupled to the adapter to an EFW and my asi178mm-cool. I could put together a before and after corner aberration comparis...
by James_Sorenson
Thu Nov 15, 2018 1:24 pm
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

So I am trying something simple. Shimming never has worked, so a possible simple solution. I took the adapter apart by taking off the m42 ring. I wet sanded with fine grit sandpaper on a granite surface block the thin face that actually contacts the surface of the second half of the adapter. I put t...
by James_Sorenson
Sun Nov 04, 2018 1:23 am
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

Ughhh....So I purchased the newest version of the adapter thinking the fixes were implemented in it. Spent several nights test imaging and getting the spacing right and checking my stars. They still have lens tilt aberration's. Took everything apart and measured the thickness of the adapter at diffe...
by James_Sorenson
Wed Oct 10, 2018 3:26 am
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

I haven't. I wasn't aware that there was a new adapter until I discovered this thread about a week ago. I've been fighting issues with the one I got since I purchased it.
by James_Sorenson
Tue Oct 09, 2018 1:52 am
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

Looks like you have the same one as I do. I have tried spacing with shims several times and varified that I have the correct total spacing for everything. Can't seem to get rid of the lens tilt in my images.
by James_Sorenson
Fri Oct 05, 2018 2:49 am
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

best way to make it tight is to buy a EOS lens adapter that has a contra-screw-tightening nut like the adapter from Geoptik (but it also isn't super perfect as the nut is kind small and has only little of travel, but it's the best (so far) commercially available product - BECAUSE it has NOT PLAY at...
by James_Sorenson
Fri Oct 05, 2018 2:22 am
Forum: Accessories
Topic: EOS Lens Adapter Loose - EFW Version
Replies: 33
Views: 9860

Re: EOS Lens Adapter Loose - EFW Version

20181004184025_IMG_4235.JPG I bought my adapter at the end of feburary, it has play issues as well. I can't seem to get good stars in my images because of lens flex with my Rokinon 135 f2. It is supported with a ring. I want to know if the one that I have is the old model or the newer one? It seems...