I suppose the title could be taken into a thousand directions...and that's ok!
I picked up a Kern Vario-Switar POE 16-100 H16 RX zoom to match up with the bayonet mount of my S16 Bolex EBM, but after shooting a few tests (which seemed a touch "dark") I looked closely at the aperture blades on this lens...it appears there is something (could potentially be a blade stuck perhaps, or not? Not sure...) that is very obviously protruding into the usually circular aperture opening.
Here are some pics below that illustrate it a little more clearly. Basically, it looks like a piece of a blade sticking out....but I know the mechanics of this lens are really extreme for a zoom in this price range, and lets just say, it isn't exactly "not-nuanced", particularly with regard to the relationship evertything has to have with Bolex's camera specs at the time these were produced.
So I guess what I'm asking is, has anyone else with a POE 16-100 seen this wonky blade/object in theirs? What exactly is it? If it's normal, or requires some special operational workaround, please do let me know! Like I said, my footage was a touch too dark, and even with plus-x reversal at 100 ASA indoors, it shouldn't have been THAT dark....so I'm wondering if this thing is an abnormality that is either blocking out light, or if it's maybe an entirely overlooked aperture sticking problem (I thought it was all the way open at 1.9....fairly darn....99.9% positive I looked at the blades open at each stop before testing).
Anyway, with their 2-blade aperture system deposited into the back of what seems to me to be a wonderful zoom, this is certainly a goofy lens. While the bokeh will no doubt be polarizing (get it....two blades hehehe) I actually love it, and it's RX balanced for the S16 bolex so.....I'm planning on making it work for me. But I need it to work!
Here are the pics attached...