The utility of more pixels (tech thread).

Started Sep 19, 2011 | Discussions thread
Hercules Grytpype-Thynne
Regular MemberPosts: 125
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Re: yeah, but...
In reply to Steen Bay, Sep 22, 2011

Steen Bay wrote:

Art_P wrote:

if you pour the small cups into the big cup, you're down to one cup from four, and you'll never know if it rained equally on all four cups!

In pixels, this more or less defeats the purpose of having four receptors, and your 48MP sensor only yields 12MP.

Yes, but the downside of collecting more (and smaller) samples is that we also see more clearly how uneven the rain actually falls, even the rain (photons) from what's supposed to be an even/smooth area. At low ISOs that'll normally not be an issue, but at higher ISOs (with less rain/photons falling) the increased noise/deviation could be a problem, and it's therefore a good thing that we can get rid of it again via a simple downsampling (but we'll loose the additional detail too, of course).

Or you can use NR and lose the noise but retain more of the detail.

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