SGinNorcal wrote: tsdevine wrote: _Refraction wrote: tsdevine wrote:
I have to use it more to form a strong opinion, I haven't shot it wide open or at f/4 yet. But most of my shooting is more stopped down. I am a little bummed out about the filter situation, but I know even the GF20-35 needs a decently thin filter. So given this is wider, it's not a huge surprise I guess. Just not really looking into buying a larger filter system, although at some point I probably will.
So I'm keeping it, although it will be a sparingly used lens. I'm not sure it's much wider than my Sigma 14-24 though, but it's noticeably wider than the GF20-35.
Sorry, not much help here yet, just more initial opinions.
Just wanted to chip in here to thank you for sharing your initial thoughts. Would be great to hear more as you get a chance to test the lens out. I've thought for some time that an ultrawide was missing in the GF range, and I've got a trip to dark sky reserve coming up too so this lens is tempting.
For the 95mm filter - am I right in thinking that 95mm screw in filters aren't supported, only a NiSi proprietary magnetic mount? I was thinking of picking up a 95mm screw in CPL since I have a couple of other 95mm lenses anyway, but I'm less keen about being locked into NiSi and having to buy a NiSi adapter for my existing lenses.
I suspect you could use an 82mm to 95mm step up ring with at least one 95mm filter and be okay, but I don't know for sure. I don't have an 82/95 step up ring. I do have a 95mm filter though, so I guess if I picked up a step up ring I could try it. But most likely I'll stick with magnetic filters, but I probably won't go the NiSi route on that.
I don't know, if it vignettes with a Kase inlaid ring or a screw in filter, its seems that anything screwed in there would vignette. I compared the inlaid ring to a step up ring and its actually thinner. It makes me kind of wonder why they bothered with threads at all.
Sorry if I maybe misrepresented earlier, it doesn't vignette with the Kase magnetic adapter alone (which is useless). It does vignette if I put a filter on the Kase magnetic adapter or on the inlaid ring (at least with a Maven magnetic filer). So my belief is that if a magnetic adapter doesn't vignette, a step up ring won't either. Agree that's not a slam dunk, so I would want to test it with a step up ring to be sure.
It actually vignettes if I hold a Maven magnetic filter against the front, naked. I didn't test if the inlaid ring alone, but I suspect testing the Kase magnetic adapter is more akin to how a step up ring would perform.
A screw in filter usually has some metal surrounding the glass to hold it in place, none of that would be there on a step up ring. The step up ring wouldn't have the threads to mount a filter like a filter does (I had a slim filter that still had front threads, not one that has no threads).
But agreed, this is all theory until tried and proven. I'll order a cheap step up ring and report back. If I plan to use a different 95mm magnetic system, I need to know whether the magnetic step up ring is going to work or not. Not sure I can 100% prove that with any old step up ring, but at least if a regular one doesn't work...I'm most likely SOL unless I buy into the NiSi system.
Edit: Hmm...or is the test where I used the 82mm Kast magnetic adapter enough to prove that a step up ring will work? Seems like the only risk is if the step up has a thicker piece of metal that fans out, or it doesn't screw in far enough to fully seat.
Jul 29, 2026 at 12:46 PM
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