Why does a camera's framed shot move by itself?

Started 11 months ago | Questions thread
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Focus Shift Shooting Regular Member • Posts: 343
Why does a camera's framed shot move by itself?

So I've been interested in stacking photos for completely removing noise and adding sharpness. My mirrorless camera has no problem with this at all.

My D850, D810, and other DSLR cameras can't do it.

Here's my set-up...

Tripod with remote shutter release, mirror lockup, manual focus.

I tighten everything down tight! Nothing should move. I'm not touching the camera.

Every single image is slightly off from all the rest.

It appears as if the whole system tenses up and it is at this point when things are going wrong for me. This may be completely normal, likely is as it is happening with any DSLR I use, but I'd like to know exactly why it is happening.

Anyone have an idea?

 Focus Shift Shooting's gear list:Focus Shift Shooting's gear list
Sony RX10 IV Nikon D850 Nikon AF-S Nikkor 14-24mm f/2.8G ED Nikon AF-S Nikkor 70-200mm f/2.8G ED VR II Nikon AF Micro-Nikkor 200mm f/4D ED-IF +3 more
Nikon D810 Nikon D850
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