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Long Exposure: ISO 400 at 30 Seconds vs ISO 64 at 272 Seconds

This page looks at whether shooting a much shorter exposure at ISO 400 can produce better/worse/comparable results to shooting a much longer exposure at ISO 64. Long exposure noise reduction was enabled for both.

Scene

ISO 400, 30 seconds, +0.4 push: view ACR settings, view histogram
ISO 64, 272 seconds, +1.0 push: view ACR settings, view histogram
No noise reduction used. Both required correction to take out excess magenta—whether the camera or lighting is unclear.

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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

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Variants ISO400,ISO64 available in full article

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