Naked Science Forum

Non Life Sciences => Technology => Topic started by: Geezer on 19/05/2012 17:17:30

Title: Do you need a few more pixels for your camera?
Post by: Geezer on 19/05/2012 17:17:30
How about this -

http://www.vivalageek.com/2012/05/18/huge-camera-sensor-can-photograph-the-sun-and-stars-in-daylight/

(The bit that got my attention was viewing stars in daylight!)
Title: Re: Do you need a few more pixels for your camera?
Post by: CliffordK on 19/05/2012 20:54:55
Interesting.

Obviously designed for very few applications such as astronomy and space applications.
112-megapixel, MONOCROME.
And, you must keep the sensor at -100 degrees Celsius.
I'm not sure of the daylight photos of the stars. Perhaps it is possible, with very long exposures, and a good tracking system.  However, the atmosphere's light diffusion would make the image not very useful.

You can, of course purchase the Leaf Aptus-II 12 (http://www.mamiyaleaf.com/products_aptus212.asp).  80MP, RGB (which would give you the equivalent of 240 MP monochrome pixels, I think).  And, it doesn't have to be kept too cold to touch.

Nikon is pushing 36.3MP (http://mashable.com/2012/02/07/nikon-unveils-d800/). 

This is one of my fears with deployment delays of the James Webb Space Telescope (JWST).  They've been investing millions of dollars into imaging and sensor development, but it is likely that "retail" technology will have improved significantly by the estimated launch date of 2018 to 2020.
Title: Re: Do you need a few more pixels for your camera?
Post by: Mazurka on 24/05/2012 09:10:17
Ok, thats quite impressive as is this
http://blog.graysofwestminster.co.uk/2012/05/09/6mm-f2-8-fisheye-nikkor-on-a-nikon-d800-first-time-ever/ (http://blog.graysofwestminster.co.uk/2012/05/09/6mm-f2-8-fisheye-nikkor-on-a-nikon-d800-first-time-ever/)
A wide angle lens so wide it can see behind itself (220 degree field of view)...
(sadly now sold at the bargain price of 100,000)
Title: Re: Do you need a few more pixels for your camera?
Post by: RD on 24/05/2012 10:06:27
(The bit that got my attention was viewing stars in daylight!)

Quote
Huge camera sensor can photograph the sun and stars in daylight
http://dvice.com/archives/2012/05/huge-camera-sen.php


I find it very hard to believe that a single exposure which shows the surface of the sun, (e.g. show sunspots), can also show stars.

The contrast range of ye-olde monochrome negative film is about 14 stops.

Quote
latest CMOS image sensors now have measured dynamic ranges of about 11,000:1 (reported as 13.5 stops,
http://en.wikipedia.org/wiki/Dynamic_range

Higher dynamic range is possible by combining multiple exposures ... http://en.wikipedia.org/wiki/High_dynamic_range_imaging#Examples
Title: Re: Do you need a few more pixels for your camera?
Post by: Lor on 24/05/2012 11:28:14
does that not look like David Crosby in the image link Geezer? wow
Title: Re: Do you need a few more pixels for your camera?
Post by: CliffordK on 24/05/2012 17:12:50
One might as well take the 80 MP Leaf, and couple it to a decent lens.

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fcdn1.matadornetwork.com%2Fmatadorgoods.com%2Fdocs%2Fwp-content%2Fimages%2Fposts%2F20100106-Lens01.jpg&hash=86a20afa423aff9eea4a174d66f67098)
From Don's Post (http://www.thenakedscientists.com/forum/index.php?topic=42706.msg377514#msg377514)

A SLR camera is circled in red.

Check out the zoom capabilities of the Canon 5200mm Lens.
http://www.youtube.com/watch?&v=IRq18WpQZC0

The 80mp would give one an additional 8x digital zoom (1/64 image size), and still end up with a decent 1.2mp image.
Title: Re: Do you need a few more pixels for your camera?
Post by: Geezer on 24/05/2012 17:38:27
does that not look like David Crosby in the image link Geezer? wow

"I don't know who he is, but he's a dead ringer for his brother!"

(Extra credits for the person who can fill in the joke that goes with that punchline.)
Title: Re: Do you need a few more pixels for your camera?
Post by: imatfaal on 24/05/2012 18:40:06
I am not sure about his name - but his face rings a bell
Title: Re: Do you need a few more pixels for your camera?
Post by: CliffordK on 24/05/2012 18:51:34
"I don't know who he is, but he's a dead ringer for his brother!"
(Extra credits for the person who can fill in the joke that goes with that punchline.)
A quick internet search  :)
And, one finds two versions of the joke
Two men with no arms.
Two boys with no arms.

Title: Re: Do you need a few more pixels for your camera?
Post by: Don_1 on 25/05/2012 10:57:35
This is not a camera; it's a scientific imaging system. The web site seemingly keen to see it released on to the market is for geeks. That is, those with more money than sense who would buy it because they have some strange obsession.

The cost, although not given, I can imagine would be very high as would the operating cost since it needs to be cooled to -100oC. As mentioned, for long exposures, a good tracking system would be an additional cost and with long exposures a good dampering system would be required. Any vibration could ruin a shot.

All this would make the system too complex to be of any use except for the purpose it was designed for; scientific imaging.

Even the geek site admits that today's cameras have sensors big enough for the vast majority of happy snappers and I can't see even the most avid professional would have a use for this complex, costly and awkward system.

Canon and Nikon have professional cameras' of 18.1 MP (Canon 1DX) and 16.2 MP (Nikon D4) and the 22.3 MP Canon 5D mk III and 36.3 MP Nikon D800 really do take DSLR's into a world of sensors above and beyond the requirement of most.

If you really do need to improve on the quality of these, then a medium format Pentax 645D at 40 MP or a Phase One 645DF with an IQ180 back at 80 MP would be far far better than this monstrosity.
Title: Re: Do you need a few more pixels for your camera?
Post by: CliffordK on 28/05/2012 18:58:38
While not a single CCD....

One can pick up a cool 1.4 gigapixel camera

[;)]

http://www.zdnet.com/blog/emergingtech/a-14-gigapixel-camera-to-detect-asteroids/1098
http://pan-starrs.ifa.hawaii.edu/public/design-features/cameras.html

(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2Fpan-starrs.ifa.hawaii.edu%2Fpublic%2Fdesign-features%2Fimages%2FGPClab-400.jpg&hash=eb5b382efd0ea70c2362451b1840ce15)

So,
How long do we have to wait for single chip gigapixel CCDs?