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Author Topic: Few question on excellent text about the PMA…  (Read 2129 times)
Milutin Labudovic
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« on: March 05, 2006, 07:43:59 PM »
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Few question on excellent text about the PMA…

-”…Mother Nature applies the laws of physics to how many photons can be captured by an individual photo site, and even the best image processing firmware can't create something out of nothing when the pixels get too small.”

http://www.luminous-landscape.com/essays/pma-30000.shtml


-When a certain number of photon or one photon (?), hits the silicon. He releases one electron, that is collected in depletion well. In practical CCD chips with depletion well of 4.5 microns collects about 20.000 electrons. So in future when we abandon microns, and go further-smaller (if possible for us, but the nature provided), and make super truper semi conductors that passes electrons with no fuss, like DHL. We can go around 20.000 sharper and stronger. One pixel – one photon. (if it is a particle      )…

Now, I might be terribly wrong and blabing, which I am often.


- “…Notwithstanding its name, Photoshop never was designed for photographers. For most of its 20 years it's been a tool for graphic artists and pre-press professionals. Photographers took to it when scanning film got hot in the mid to late '90s, and then at an increasing pace when digital cameras came on the scene in earnest about 5-6 years ago. But it's a bit of a Swiss Army knife, with lots of tools, not all of which are the most appropriate ones for what photographers need doing.”


- About the Photoshop, the photoshop needs a monument, a distinctive one. He gave a poor photographer a chance to be one, by the guts.
My country made her selfe poor in…..one year.
I ended my laboratory works when yougoslavia fall apart, and even working B&W laboratory become waaaay, to expensive. On salary working as a photographer in major daily newspaper in the country. The color laboratory was out of the pocket reach (by eons) before I even got to know her.
And then mack with photoshop 3 or 4, and a microtek scanner, some lousy peace of junk that coasted about a rols rolce would, but was a top notch of scanners of that time (or that my company could afford).
Photoshop, a damn 200.000 dollars laboratory right in front of my nose {a photoshop, not a scanner}
Good bless silicon…a poor`s man worship
Yes it wasn`t build for the photographers, but then we grabbed it, we made our selves a better photographers. Less tools, less of a photographer you are, photographers are a dying breed. To the level where few will hold the market.
and I am 100% sure the market is going away from us.
we will become absolute for XY tasks that we use to do, or do now.
But we need to be more agile, and understand more and more tools, including for example a dream weaver for making web pages in the future . The photographers job is changing and expanding.


Lightroom is a different kind of software which some of his modules photographer neeed. but photoshop is a must, only a more complicated software can replace a modul that photoshop is covering


“…Panasonic makes the aspheric elements that go into Nikon and Canon lenses, and Sony supplies sensors to almost every camera maker for one model or another.”


Wow, that is totally fresh for me.
Nikon 12-24 is a piece of junk, or a colleague of mine has a lemon, but a lot of coluegues sad it is only good as a low res PJs work.
The cornes are, khm…or it is a lemon

Canon 10-22 - or do I hade not an opportunity to play with fellow, simse like a decent peace of lens.

Are they using aspherical elements from Panasonic?



The PMA text is excellent, and inspiring.



http://www.luminous-landscape.com/essays/pma-30000.shtml
« Last Edit: March 05, 2006, 08:06:18 PM by Milutin Labudovic » Logged

<want to feed on photons>
jani
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« Reply #1 on: March 06, 2006, 09:41:31 AM »
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http://www.luminous-landscape.com/essays/pma-30000.shtml
-When a certain number of photon or one photon (?), hits the silicon. He releases one electron, that is collected in depletion well. In practical CCD chips with depletion well of 4.5 microns collects about 20.000 electrons. So in future when we abandon microns, and go further-smaller (if possible for us, but the nature provided), and make super truper semi conductors that passes electrons with no fuss, like DHL. We can go around 20.000 sharper and stronger. One pixel – one photon. (if it is a particle      )…
The problem is to separate signal from noise. That is, to separate relevant photons from irrelevant photons.

If you have one pixel = one photon, then you'll have a LOT of noise per pixel, and will need a great deal of processing power to eliminate it afterwards.

You can actually test this for yourself. The human retina's chemical processes can trigger from a single photon, it's said.

So go to a completely dark room, open your eyes, and tell me if you see 100% darkness, or if there are weird spots, streaks and/or other patterns appearing.

And that's with the world's best real-time image processor working for you.


Even so, you're completely disregarding the problem of the wave lengths of visible light, and the uncertainties that produces regarding colour precision.
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Jan
BernardLanguillier
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« Reply #2 on: March 08, 2006, 07:09:21 PM »
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Nikon 12-24 is a piece of junk, or a colleague of mine has a lemon, but a lot of coluegues sad it is only good as a low res PJs work.
The cornes are, khm…or it is a lemon
http://www.luminous-landscape.com/essays/pma-30000.shtml
[a href=\"index.php?act=findpost&pid=59584\"][{POST_SNAPBACK}][/a]

Your colleague has a lemon... I have an 17x22 print just in front of me that was made from a D2x + 12-24, and the corner sharpeness is 90% as good as the center part of the print, meaning tack sharp.

Regards,
Bernard
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A few images online here!
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