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Matt Grum
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Re: Pre-order: Fujifilm GFX 50S Medium Format body ($6,499)


adamdewilde wrote:

Sure people can say bigger sensors let in more light. But it's per-pixel light that matters not total light over an area, so light gathering will not change.


It's light per image that matters, higher pixel densities may have more noise per pixel but can look the same when printed or when resized to view on screen.

adamdewilde wrote:
The Leica SL will be 1 and a bit stops brighter using the same exact lens. This isn't new news, Canon and Nikon don't match either. But Leica has consistently been more correct with their ISO numbers than other companies


Lee Saxon wrote:
Also, you're definitely right about "creative calculations" of ISO value.


Actually no-one is correct, and the camera manufacturers are not being "creative", ISO standard 12232:2006 permits five different ways to determine ISO values for digital sensors.



Mar 05, 2017 at 04:01 PM
Matt Grum
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Re: Pre-order: Fujifilm GFX 50S Medium Format body ($6,499)


adamdewilde wrote:

Sure people can say bigger sensors let in more light. But it's per-pixel light that matters not total light over an area, so light gathering will not change.


It's light per image that matters, higher pixel densities may have more noise per pixel but can look the same when printed or when resized to view on screen.

adamdewilde wrote:
The Leica SL will be 1 and a bit stops brighter using the same exact lens. This isn't new news, Canon and Nikon don't match either. But Leica has consistently been more correct with their ISO numbers than other companies


Actually no-one is correct, the ISO standard permits different methods to measure sensitivity. You could say the Leica is wrong because it's more sensitive.





Mar 05, 2017 at 03:50 PM





  Previous versions of Matt Grum's message #13948680 « Pre-order: Fujifilm GFX 50S Medium Format body ($6,499) »