more pixels are better!

Started Dec 14, 2008 | Discussions thread
J1000 Senior Member • Posts: 1,339
Re: more pixels are better!

Maybe it's just me, but I find all that talk of photons to be obscuring the answer to this question.

To the original poster: The answer to the "are more pixels better" question is very simple: Look at the photos! It's a completely subjective decision. As you know, increasing the pixel count requires various compromises. There's no need to know exactly what they are, because they manifest themselves visually. If you like the output then good! If you don't, then bad.

Here are the things to look out for:

  • High-resolution files with low-def details (inadequate lens perhaps, or inadequate processing)

  • Noise (generally speaking, the higher the megapixel count, the higher the noise)

  • Noise-reduction artifacts (the higher the noise, the more NR needed)

It's not just about losing detail due to noise reduction, it's about watching new details appear that don't belong in the picture (artifacts).

And no, it does not double your dynamic range. Even if you have twice the pixels, on an individual level they are going to interpret the range of light the same way. So if one pixel can interpret light on a 1-5 scale, then adding another pixel simply does the same action twice. The color is no more precise that way either, because it's representing a different point on the image plane.

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