Nokia Puts 41MPixel Camera In a (Symbian) Phone
judgecorp writes "We aren't sure what's the strangest thing about Nokia's new offering, the fact that it's got a 41 Megapixel camera or the fact that it runs Symbian. It has a very high resolution sensor and uses oversampling, apparently producing good results in low light. Users can either save a maximum of 38Mpixels, or else zoom and crop for normal resolution images. Observers expected a maximum of one more Symbian phone before Nokia shifts over to Windows Phone. This suggests either a longer life for Symbian — or maybe [that] Symbian was just an easier platform to make a show-stopping device that may turn out to be more of a concept phone."
megapixel race is over now, megapixel after a some level do not matter. why dont they understand this simple thing??
Unless it has a DSLR-type lens, the limitation is going to be optics, not resolution.
-taktoa
"This suggests either a longer life for Symbian — or maybe Symbian was just an easier platform to make a show-stopping device that may turn out to be more of a concept phone"
Or perhaps the phone has been in development for some time, maybe it takes longer than Marketing announcement cycles to design and deliver new technology.
"The weirdest thing about a mind, is that every answer that you find, is the basis of a brand new cliche" -
Shouldn't they expect a mazimum?
Tic-Tac-Toe, Global Thermonuclear War, and relationships all have the same winning move.
Is it really pixels or is it phonus balonus theoretical pixels?
I have and Olympus FE-47 cheepie "14 megapixel" which has worse actual resolution than my old Nikon Coolpix 800, which only is 1 megapixel.
A feeling of having made the same mistake before: Deja Foobar
Its the optics (especially larger apertures) that deliver better resolution and quality. Moreover, higher number of pixels in the same sized sensor means that each pixel is smaller and inherently more noise. They would have been better off just producing the same megapixel sensor (~5MP) with better (newer mfg process) pixels, if they really wanted better low light performance.
But what they really wanted was marketing headlines... Oh well :-/
The resolution is determined by the sensor size, not the "number of megapixels". Why do sites report on a number that means nothing whatsoever?
Your average phone has a ~4 mm (diameter) lens. This yields an Airy disc of some 1.15 minutes of arc.
Even at a wide field of view (say, 60 degrees), this yields a maximum lateral resolution of some 3200 pixels. Isn't thus any camera with more than ~10 MPixels diffraction limited by the tiny lens, and not sensor limited?
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41 Megapixels - wow, that will take up an entire 2008 SD card per photo.
Does it actually have a good enough lense to use all 41 Megapixels- or is this a case of the megapixels being greater than it can really accurately capture?
I know megapixel is often not a good indicator of the actual photo quality.
"That's the way to do it" - Punch
I strongly recommend reading the white paper:
http://europe.nokia.com/PRODUCT_METADATA_0/Products/Phones/8000-series/808/Nokia808PureView_Whitepaper.pdf
I'll look forward to getting 20 of those pictures in an email. Thanks mum, the 10 gig of pictures with nothing but the food you ordered whilst on holiday are great.Oh - I can see some bugs you missed in the salad :) / fires up Photoshop - Mwwhahahhaaa.
mazimum
This suggests either a longer life for Symbian - or maybe Symbian was just an easier platform to make a show-stopping device that may turn out to be more of a concept phone.
Or as most of us have figured out, Nokia has been a rudderless company and this is probably the work of the "let's turn Symbian into a smart phone" faction and this is just to recover a little bit of all the money they've wasted, just like the pathetically few N-series phones they released. They probably jumped on the wrong ship when they went all in on Windows Phone, but at least that one is going somewhere. Nokia never managed to agree on one thing and then actually do it well, so Apple and Google ate them for lunch. Epic management fail, if you ask me.
Live today, because you never know what tomorrow brings
Some sample pics, apparently:
http://cdn.conversations.nokia.com.s3.amazonaws.com/wp-content/uploads/2012/02/Archive2.zip
They look OK, and amazing for a phone.
The blog here: http://www.knowyourmobile.com/blog/1263008/nokia_808_pureview_photo_samples_released.html has bot a brief explanation of how the pixels are used and some sample images. Same images as in the zip file in the previous post.
sigh, i see this thread devolving into flames by pixel peepers who will find the most minute issue to pick at while failing to just look at the damn pictures admit that they look quite nice. The kind of folks for whom photography has little to do with the actual content of the picture. I think the samples look pretty good considering they came from a cell phone with "fake" 41MP sensor and a lens that's "too small".
Nice job Nokia. Would have been nice to see this tech a few years sooner when you still were a player in the US market. I'd love to see them license this. I don't plan to buy a Nokia phone, so it would be cool to have a decent camera in the form factor of say a thumb drive that i could just keep on my key chain.
Keep making fun of Nokia ignorant yankees. One of the main reasons Nokia is non-existent in US is because it tried to stand up to the telcos and protect consumer's rights by not crippling the phones as per the request of your greedy-ass cellular carriers. I guess it won't be making that mistake anymore.
The 808 just goes to show that some companies still employ engineers instead of designers. I mean, Apple has to rip off that patented technology from somewhere. ( http://www.zdnet.com/blog/btl/apple-pays-up-licenses-patents-from-nokia/50558 )
I'm not new here, so I know it's a lot to ask, but in addition to reading the fucking article, I encourage everyone to read the white paper too: http://europe.nokia.com/PRODUCT_METADATA_0/Products/Phones/8000-series/808/Nokia808PureView_Whitepaper.pdf
Also check out the sound quality of the 808 recording (listen with good headphones or speakers to really appreciate the difference) http://www.youtube.com/watch?feature=player_embedded&v=EbLFtF50y9A
The point is not to take 38 megapixel images. I don't know why everyone is focusing on the megapixel, that is not the story here.
The story here is the approach they take, 41 megapixel oversampled images processed algorithmically to produce superior 5 mega pixel images. The story may even be Symbian, definitely not the 41 mega pixel sensor.
Obliged http://xkcd.com/1014/
now we will end up seeing way too much. TMI.
By default it takes pictures at the highest resolution, but then uses 7 pixels for each pixel (called pure pixel or something like that) and downsizes the final image to 5MP. This was you the user also has a non-optical lossless zoom (magnification depends on what final resolution you use). Apparently this technology was in development for over 5 years.
I've put a ferrari motor on my lawnmower. Now it can go superfast and I could do races with it, but I still use it mainly for what it was design for, mow the lawn...
Actually since this is a near diffraction limited lens working at f/2.4 the spot size is going to be about 0.56um * 2.4 ~ 1.344um on the focal plane. The cycle size is about double, or 2.688um.
Considering it uses a Bayer array, and the pixels are spaced at 1.4um, the green pixels will be spaced at 2um (minimum distance to next green pixel). To properly sample you need at least 2 pixels per cycle (said Mr. Nyquist), but since pixels are not exactly points (they have an area) astronomers working in diffraction limited imaging advise 3x sampling in practice.
What this means is you would need a pixel size of 2.688/3/sqrt(2) ~ 0.63um (or 0.9um if using a Foven-style sensor) to properly sample this lens. 1.4um vastly undersamples the lens, as can be seen near the central area in the available samples: they are razor sharp in the central area, and otherwise are limited by aberrations.
A practical article describing this, with example images, can be seen here:
http://samirkharusi.net/sampling_saturn.html
You cannot proceed from the informal to formal by formal means
There are a LOT of people who adore Symbian phones, and they are VERY secure and stable in comparison with many other telephones.
The purpose of existence is to make money.
First off, think about how people use their phone as a camera.
1. The keep their phone in their pocket.
2. They whip it out holding it in the air and take the picture.
3. They post it on facebook.
OK now lets talk about a 43mp will look after this process. Or for that matter even a 5mp super-processed perfect picture.
1. Keeping the phone in a pocket or purse.
The lens will invariably get covered in dust, fingerprints, and get scratched from cleaning with a t-shirt. This will take about 24 hours from the purchase of a phone to degrade the lens to a point where even a good 43mp imaging system will look like a carnival mirror.
2. They whip it out holding it in the air and take the picture.
Hand-holding a camera invariably add some jitter to the image. You will have better luck in daylight but indoors or at night, its enough to degrade the image from slightly soft to psychedelic . Oh dont you wish the phone had a flash? Most dont because it drains the battery and adds bulk.
3. They post it on facebook.
After you wait 10 minutes for your image to be uploaded over the wireless connection.. Guess what happens to your 43mp image or your super-sampled 5mp image? it gets resized to a puny half megapixel image.
Enjoy!
oldhack: "Security is a waste of money until shit hits the fan. 5 minutes later, it becomes waste of money again. "
The "41 megapixel" helps in impressing people but the really interesting thing in this phone is the size of the sensor (see dpreview for a comparison of sensor sizes). Physically larger than the majority of sensors found in compact cameras, it allows for better image quality.
It is likely that a 5 megapixel sensor of the same size would be equally and even better suited for taking images in low light conditions but such a sensor would lack the so-called "digital" zoom described for the PureView phone. The "zoom" is nothing more than cropping the image to smaller and smaller sizes and lower and lower quality. But it is there.
I do hope that compact camera makers will follow the example shown by Nokia and provide the new models with larger sensors providing better image quality. It is likely that such a move is detrimental to camera makers as it might steal from the dSLR territory.
and still no lens cap i bet some nice pocket scratches for that arty feel.
The example shots look pretty grainy up close, but the idea really isnt to try to utilize the full megapixels and instead rely on the sampling algorythm.
I dont care how many megapixels, it comes down to optics. Even if the optics are 4x as big as the average smartphone, they are 10x smaller than a modern point'n'pray and a digital zoom does nothing to improve this. Lets see some bigger optics and then we'll talk.
I would take a 10MP with great optics over a 20MP with mediocre optics any day.
Daniel Rutter of Dan's Data has interesting things to say about this sensor on his blog. Short version: it might just not be as stupid as I thought.
Since it has been possible. They are no SLRs but for something which you always carry about with you they can produce very good results. Their N series are generally superb camera phones. Very good lenses, very good sensors and very good software. The N8 which has to be a year old now has for example a 12mp sensor, carl zeiss lenses.
MS define the hardware for WP and Nokia moving faster than Microsoft, it explains why Symbian is still around.
Deleted
Neat stuff this 808, really! Just that I bought Nokia flagship n97 three years ago -- which as you might be aware receive negative reviews for good reason. This 808 is eerily similar looking. That alone makes me think twice about it...
Not strange you were modded down, you can't even read. When did Ballmer peddle Symbian? Moron.