I shot some pretty underexposed shots today (playing around with stacking technique, this isn't ordinarily how I'd shoot), and when pushing them in lightroom (and the same thing appears in Capture One).
Could it be heat from the card slot? I've not seen this is any other situation, but again don't typically underexpose so significantly. Anyone else seeing this?
Attached are: default conversion & +100 shadows +2.14 exposure (Lightroom)
Other details: compressed raw, silent shutter (so I've lost precision), burst to a single card, every shot in the burst has the same noise.