Too many megapixels? Six is enough for an 8x10.

Started Apr 26, 2009 | Discussions thread
The Davinator
The Davinator Forum Pro • Posts: 22,033
Re: hardly an authoritative source.

bobn2 wrote:

Lobalobo wrote:

bobn2 wrote:

PhotoGo wrote:

A high-megapixel count doesn't always equate to better image quality.
Actually, if camera designers try to cram too many megapixels into a
small camera, it can have the opposite effect.

When will people stop peddling this big lie?

Hard to answer your question, Bob, considering that he's right and
you are wrong.

That's your first mistake. You got that the wrong way round.

As this site explains carefully and persuasively, all
else equal, pixel density is an enemy of quality. Increasing
megapixels can increase resolution, but at a price of lost dynamic
range, lost tonal quality, and noise in general.

That's your second mistake, taking as truth the extended campaign of
a web developer who's happened to start a successful photography web
site, even when it flies in the face of physicists, electronic
engineers, optical system designers and the fellow who actually
invented the active pixel sensor and is completely unsupported by any
practical eveidence. You are not in a position to judge who is
'correct' and who isn't unless you've been through the detailed
discussions of the workings of photosensors and have the background
to do that. I have, and I'm convinced. Many others with better
qualifications and more extended expertise than me have also, and
agree that the 'pixel density is an enemy of quality' line is BS. And
there is no evidence whatever to support it, at all. Still people
like you propagate the lie. It is incredible how a myth can spread,
unsupported by theory and evidence, on the back of a few
self-appointed, so-called 'experts'.

This is why Mamiya
and Hasselblad get pros to pay $20,000 or more for large sensors;
they frequently need both the resolution of many megapixels and the
image quality of low pixel density, and there is no free lunch.

You are confusing the benefits of large sensors with large pixels.
Big sensors are better than little ones. Little pixels are better
than big ones. Big sensors with little pixels are the best of all.

Little pixels are better than big ones? Really? Sorry my friend, but with that you have proven you have no clue what you're talking about.

So you're not right, but at least you're very loud.

Someone needs to be, with DPR, you and all the other acolytes
spreading this lie.

He's not spreading a lie.....he's exposing fools.

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