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Nikon DSLR Cameras
D500
ISO Lo1 setting
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<blockquote data-quote="lokatz" data-source="post: 634865" data-attributes="member: 43924"><p>Nikon uses Lo settings on many models, with different ISO ranges. For instance, the D5/500/600/750/800/7500 share the Lo-1.0 (ISO50) to Lo-0.3 (ISO80) options, while the Df/D300/700/3/4 have Lo-1.0 (ISO100) to Lo-0.3 (ISO160). The D810 (but not the 810A) even goes from Lo-1.0 (ISO32) to Lo-0.3 (ISO50).</p><p></p><p>At very low light intensity, semiconductor photo sensors tend to become non-linear: when you cut the light in half, the photonic energy the sensor records becomes proportionally even less than that. This is why with very long exposure times you tend to get underexposed images - at very low light, closing the aperture by a factor of 2 can no more be fully compensated by opening the shutter twice as long.</p><p></p><p>My guess is that Nikon chose the Lo denominations to hint at this effect and defend themselves from claims that these ISOs are not accurate enough. Not sure about this, though.</p></blockquote><p></p>
[QUOTE="lokatz, post: 634865, member: 43924"] Nikon uses Lo settings on many models, with different ISO ranges. For instance, the D5/500/600/750/800/7500 share the Lo-1.0 (ISO50) to Lo-0.3 (ISO80) options, while the Df/D300/700/3/4 have Lo-1.0 (ISO100) to Lo-0.3 (ISO160). The D810 (but not the 810A) even goes from Lo-1.0 (ISO32) to Lo-0.3 (ISO50). At very low light intensity, semiconductor photo sensors tend to become non-linear: when you cut the light in half, the photonic energy the sensor records becomes proportionally even less than that. This is why with very long exposure times you tend to get underexposed images - at very low light, closing the aperture by a factor of 2 can no more be fully compensated by opening the shutter twice as long. My guess is that Nikon chose the Lo denominations to hint at this effect and defend themselves from claims that these ISOs are not accurate enough. Not sure about this, though. [/QUOTE]
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Nikon DSLR Cameras
D500
ISO Lo1 setting
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