IBIS focal length for S9D C-mount port?

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lukego
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Joined: Thu Nov 26, 2020 2:50 pm

IBIS focal length for S9D C-mount port?

#1 Post by lukego » Mon Apr 18, 2022 2:55 pm

I am experimenting with a Leica S9D microscope and three different MFT cameras: Panasonic GX80 (GX85), Panasonic GH5, and Blackmagic BMPCC 4K. The camera is always attached using a 0.5x C-mount lens and a Cmount-to-MFT adapter.

GH5 has a feature called "IBIS" (In-Body Image Stabilization) where the sensor floats within the frame and is stabilized by magnets. This seems potentially hepful for dealing with bumps on the microscope while at high magnification. However IBIS needs to know the focal length of the lens in order to make the appropriate corrections.

Can someone point me in the right direction for setting or calculating the correct focal length setting for IBIS on the GH5? (Is this feature actually compatible with a microscope that uses continuous zoom?) The instructions for Panasonic about using manual lenses and intermediate optics is here: https://www.youtube.com/watch?v=23YlQtg ... asonicHelp but I don't know the focal length(s) of my setup.

I don't have much experience yet but I am very curious about whether the GH5 and BMPCC are able to tease out better quality images in post-production thanks to higher quality video formats e.g. 10-bit LogV on GH5 or 12-bit RAW on BMPCC.

I have struggled with getting sufficient illumination in my microscopy and I wonder if the BMPCC "dual native ISO" feature will help here too: https://www.youtube.com/watch?v=g8hHFt3 ... ilmmakerIQ

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