Kelly Bellis - 2025-09-21

Hello Mark,

Thank you for making Open Camera!

Open Camera does a great job at mitigating /flicker/. How does that work
exactly?

I'm in the U.S. which has a standard electrical frequency of 60Hz. I'm
using 4' Barina T5 LED lights in a studio setting with my Samsung Galaxy
S23, primary camera. Using Open Camera and saving DNGs, the flicker is
mitigated most effectively. However, the problem I keep running into is
the Zoom, or magnification setting; e.g., 1.38x, the saved image is
always at a zoom mag. of 1x.

Using the native app that comes from Samung, Camera, Pro, I can save
DNGs with their zoom magnification unchanged, but the flicker remains no
matter how the ISO and shutter speeds are adjust; e.g., Auto ISO, manual
fixed 1/250; etc., see screenshot below as an example.

To be clear, the term /flicker/, in this context, appears as a linear
gradient running along the major axis, almost looking like a shadow, or
uneven lighting, when neither is in fact the case.

Any thoughts would be most welcome.

Kind regards,

Kelly

--
Untitled Document
V. Kelly Bellis
Maine PLS 2099
17 Union Street
Ellsworth, ME 04605
Available Works on Internet Archive
https://archive.org/details/@kelly_bellis