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Sony NEX-7

Noise Reduction by Downsampling

The Sony NEX-7 is a 24MP camera, cramming its 24M photosites into an APS-C sensor.

What if that sensor had 12 megapixels instead? The noise would be lower, but what happens if we downsample 24 megapixels to 12 megapixels?

Test scene, ISO 1600

This image was perfectly exposed, a slightly -0.1 stop pull was used during RAW processing to obtain the desired brightness on the dead tree.

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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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~f/5.6 @ 1/60 sec handheld, ISO 1600 -0.1 stop pull
Sony NEX-7 + Novoflex lens adapter + Zeiss ZM 35/2 Biogon

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