GFX 50s Shutter Shock w/ 110mm

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Hamiltionian Regular Member • Posts: 310
GFX 50s Shutter Shock w/ 110mm
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Since the last GFX shutter shock thread went so well, I thought I would start another. I finally got around to testing the shutter shock on the GFX with the 110mm attached.

Procedure is as follows. Focus the lens to the target wide open, then stop down to f/4. Maximum light on the target. ISO 400, Raw. Set the desired shutter speed on the camera. Adjust the variable ND filter to the point that correct exposure is achieved. I started at 1/500s and worked down to 1s in 1/3 stop increments. No refocusing between images or between MS and EFCS. Import images to Lightroom and export to tiff with default settings. Open images in MTFmapper to analyze edge acuity.

Camera is mounted using a RRS TVC-24 & BH-40, RRS L bracket.

The shutter shock here is visible, but really small. This would be near impossible to notice in a real world image. The vertical MTF deteriorates more, as expected since that is the direction the shutter moves.

Clear effect of shutter shock here on the horizontal MTF.

Slightly more info on the methodology and discussion of results:

https://thecentercolumn.com/2018/11/18/fuji-gfx-50s-shutter-shock-with-110mm-f-2/

https://thecentercolumn.com/2018/11/18/shutter-shock-methodology-demonstrated-with-the-fuji-x-t2/

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