Originally Posted by RiverOfIce
Sigh. Only if you never print it out.
If you actually print, we still have a long, long, long way to go. We need to get larger sensors with lower noise and higher dynamic range.
But you need more pixels to interpret small changes in range.
If you have only 100 pixels across picture of a object that transitions from complete black to complete white, each pixel would only be able to show 1% of light change per pixel. If you do it at 200 pixel, each would be .5% of change. 400 would be .25% of change.
You need more pixels to capture dynamic range of film, about 50-100 MP.
So even though the number of pixels should not be considered until you clearly like the printed results of a camera, we are not at the end of the pixel race. We will always need more pixels to display the full dynamic range that film can currently do.
The current 20MP sensors just are not large enough to fully display a full dynamic range of film, let alone of the same flexibility as film.
You've got your facts backwards. The fewer the megapixels the larger each photocell is, and the larger each photocell the more dynamic range the sensor has.
In addition, even professionals very rarely
print at anything higher than 300ppi, which on an 8x10 sheet comes out to about 6MP. And only the mid to high end printers can fully resolve that sort of detail. The average consumer crap can't (dpi != ppi). Furthermore, if you need to print larger than 8x10, then you should either use a DSLR or hire a pro to take the shots. You don't need to make poster-sized prints of some snapshots you took of your uncle making a funny face.
Third, medium format cameras are at 60 megapixels
, and large format ones at 144 megapixels (the highest I've heard of at least)
, so it's not like those sorts of resolutions aren't available to the those who can use them.
In summary: If all you do is view the shots on your computer, or maybe print a 4x6 once in a while, then 2-3MP is all you need. If you print 8x10's then 5-6MP is enough. "Enough" meaning that even if you increased the sensor resolution it won't increase the detail of your prints.Edited by Manyak - 5/15/11 at 5:54pm