Gordon Moore didn't actually give us anything, he stated a "law" that he
more or less pulled out of his a$$. That he was at the time right is a
tribute to engineers having a good feel for their area of expertise.
Rules of thumb like that are only valid until they're not. some rules of
thumb are pretty constant I don't think this one is, eventually physics
will dictate an end, and, that relationship will fail to hold. But,
people will continue quoting it as if it were still true. Sadly, physics
is a strict mistress, but eventually she must be paid her due.
On 6/30/2015 12:58 PM, Matthew Hunt wrote:
On Tue, Jun 30, 2015 at 12:37 PM, Mark Roberts
<[email protected]> wrote:
Storage space, processing power. Also you can always get better noise
performance from larger sensor sites, given equivalent technology.
Some people prefer that over greater resolution.
Gordon Moore, in his infinite kindness, provides us with both more
pixels, and the tools to deal with them. :-)
The "better noise perfomance" argument is less true with the Sony
Exmor sensors than it used to be. Read noise--which is what you incur
on a per-pixel basis--is very well controlled in these sensors. You
could downsample in post, and get performance very close to a sensor
designed at the downsampled size. It's hard to go the other way! And
the 42MP sensor is back-side illuminated, so you'll be getting a big
S/N gain there compared to previous sensors. The net result will
probably be both higher pixel density and better noise characteristics
than the K-5. And a bigger sensor, of course. Win-win-win!
Also, a sensor with fewer pixels would be more prone to aliasing. That
might mean a return of the AA filter.
I guess my point is that everyone seems to love the K-5 and K-3
sensors. This is a bigger version of those, with the bonus of backside
illumination. Be happy!
--
I don't want to achieve immortality through my work; I want to achieve
immortality through not dying.
-- Woody Allen
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