Sony a7III underexposed images

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Ash G New Member • Posts: 2
Sony a7III underexposed images

I am recently facing issue where during preview and as well as capture, camera is giving me underexposed images. Despite keeping shutter speed at 1/160 and aperture at 1.8, camera is cranking up ISO to 10000+ In auto. In manual mode, image is dark around 320-640 ISO.

also noticed that when focusing, for a split second I am able to see perfectly exposed image which is not getting focus locked. After a second l, image goes back to being dim and underexposed.

have been using camera without issues for almost 2 years. Issue noticed when original lens swapped for new sigma. Swapped back and issue is with older lens as well

camera: Sony A7III

lens: Sony 55 1.8Z / Sigma 24-70 2.8 DG DN

 Ash G's gear list:Ash G's gear list
Sony a7 III Sony FE 55mm F1.8 Sigma 24-70 F2.8 DG DN
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