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Gabevanlelyveld · 06-14-2022

Hi there,I have the Canon C70 (latest firmware) with the Canon .71X RF to EF adapter and a Sigma DG HSM 50mm f/1.4 lens (not the newer Art version). Every once in a while the aperture will start to flicker and there is no way to make it stop except t...

Gabevanlelyveld · 10-03-2023

I haven't had the problem since updating the lens firmware about a year ago. I'm guessing that's what fixed it. I don't remember exactly what the process was but I believe I went to Sigma's website and found out how to update the lens firmware there....

Gabevanlelyveld · 09-09-2022

Yes. Like I said, I haven't had the problem with the news lens since the firmware update but I did have the weird thing where it showed up in my footage in Premiere but wasn't actually there. I can't remember if I reset my preferences or cleared my c...

Gabevanlelyveld · 09-08-2022

I did update the firmware for the camera as well as the adapter. 

Gabevanlelyveld · 09-06-2022

Thank you, mollybrown789. That all sounds very similar to my issue. Curiously, I have since upgraded to the Sigma 50mm f/1.4 ART and I haven't had the same issue. There was one time that the flickering effect appeared in my footage withing Adobe Prem...

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Aperture flicker on C70 with older Sigma 50mm f/1.4 and .71 EF to RF adapter

Re: Aperture flicker on C70 with older Sigma 50mm f/1.4 and .71 EF to RF adapter

Re: Aperture flicker on C70 with older Sigma 50mm f/1.4 and .71 EF to RF adapter

Re: Aperture flicker on C70 with older Sigma 50mm f/1.4 and .71 EF to RF adapter

Re: Aperture flicker on C70 with older Sigma 50mm f/1.4 and .71 EF to RF adapter