Here is why Nokia EOS uses a mechanical shutter for the camera

Here is why Nokia EOS uses a mechanical shutter for the camera
The Nokia EOS has leaked out extensively last week and one peculiar feature in the camera superphone is its use of a mechanical shutter. Why is it there, though? Nokia’s former camera guru Damian Dinning is probably the best person to answer that question and his recent comment makes it all very clear - it’s because of xenon flash.

The rumored 41-megapixel camera on the Nokia EOS uses the more powerful xenon flash rather than the LED flash most other smartphones employ. But unlike LED, Xenon actually fires a very short light beam of the equivalent of shutter speeds as low as 1/25,000. In electronic shutters, though, pixels have to shut down all at the same time and this simply happens at a lower speed than the flash which would cause issues with the image - some pixels could just remain black.

Dinning’s full explanation is right below:

source: My Nokia Blog

Related phones

Lumia 1020
  • Display 4.5" 768 x 1280 pixels
  • Camera 41 MP / 1.2 MP front
  • Processor Qualcomm Snapdragon S4 Plus, Dual-core, 1500 MHz
  • Storage 32 GB
  • Battery 2000 mAh(13.3h 3G talk time)

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47 Comments

1. the_best

Posts: 139; Member since: Oct 14, 2012

cant wait for this to some out!

46. akki20892

Posts: 3902; Member since: Feb 04, 2013

me too.......and now there is no down thumbs for vote.....!!! EOS will have more MP than 41. who know.

47. TheBitterrTruth unregistered

Red thumb now.

2. amansingal14

Posts: 309; Member since: Sep 08, 2012

Well at least Nokia is trying out something new, thats not incresing display size, megapixels, or cores.

4. dexter_jdr

Posts: 1163; Member since: Jun 28, 2012

they did increase the megapixels.. in a good way

12. mi55u unregistered

trying something news? what new?

18. MCrapp

Posts: 318; Member since: Apr 07, 2013

That's not new!Camera on my Nokia N73 looks very similar.

25. Stoli89

Posts: 333; Member since: Jun 28, 2010

You might want to think about getting your eyes checked before getting a new camera.

42. mafiaprinc3

Posts: 585; Member since: May 07, 2012

and imagine sony and samsung makes DSC and still can't beat nokia when it comes to cameras on smartphones, nokia is always good

3. FlushGordon unregistered

Let's get real here, how many times (say, out of ten) would you use a humongous 41 mp setting for casual snapshots? I have a 32 mp full-frame NIKON and rarely use it at its full res due to hardware constrains on my PC and laptop... The sweet spot IMO is 16-18 mp (if not used for billboard-sized printing)...anything higher than that is overkill

7. Jason2k13

Posts: 1459; Member since: Mar 28, 2013

in marketing, bigger numbers looks better.

32. chaoticrazor

Posts: 2347; Member since: Aug 28, 2012

you mean like samsung and its octo-core, just bigger numbers you missed the entire point of the 41mp sensor as your trying so hard to play down the massive step forward nokia have made with this type of camera besides why do you never say this stuff when your worshipping samsung? they market like hell

8. dexter_jdr

Posts: 1163; Member since: Jun 28, 2012

i want to explain in 'murica language but this is better. http://i.nokia.com/blob/view/-/849564/data/2/-/Download1.pdf

13. haseebzahid

Posts: 1853; Member since: Feb 22, 2012

you know limited about nokia 41mp i guess its the senor thats 41mp the actully pic is downsampled to 8mpix so its same pic size in mb as any other pic of modren phone cameras

14. aelliott

Posts: 32; Member since: Oct 01, 2010

With respect, you are missing the point. The 41mp sensor allows for "lossless zoom" - so, without a mechanical zoom, you can zoom in with no appreciable loss of picture quality. Other cameraphones with digital zoom cannot do this. Secondly, if you just want photos of, say, 5 or 8mp then the camera uses the extra pixels at its disposal to make the photo more accurate by combining them (excuse the non-technical speak!!). Finally, assuming it's the same sensor as on the 808 Symbian, it is a MUCH larger sensor than on any other cameraphone.

17. phil2n

Posts: 519; Member since: Apr 30, 2012

@FlushGordon.. please read something about pureview and EOS.. don't be a dumb. You said you are a professional photographer yet you didn't read about this Cameraphones... Sick!!! I want to thumb you down but i can't do it..

21. raphz

Posts: 37; Member since: Oct 22, 2012

read 41 mp pureview pixel binding technology first and then you will understand .... its not only snap 41 mp picture

29. Crossblade

Posts: 224; Member since: Apr 21, 2005

You have 32 million of high quality pixels. The 41mp in the phone are used to deliver 5-8mp of quality image ;) Nokia suggest that people should not use the "full resolution photos" and shoot at the default "PureView" mode which delivers lower resolution (5, 3 or 8mp for the 808 PureView).

30. EXkurogane

Posts: 863; Member since: Mar 07, 2013

Another ignorant idi0t

34. sbw44

Posts: 433; Member since: Dec 04, 2012

And you call yourself a wedding photographer? You have no knowledge how the 808 uses its 41mp! Plus higher than 18mp overkill? why? because android doesn't have it? don't see people say 1080p screens and quad/octa core processors is overkill! but in this case Nokia ACTUALLY USES THE 41MP!

36. jsdechavez

Posts: 793; Member since: Jul 20, 2012

Well, there's the Pureview modes that do superpixels.. The lower the output resolution (full 38 MP to 3, 5, 8 MP), the better the details. Only pros and post-processing require full-res captures I think.

45. 46modnar

Posts: 14; Member since: Mar 26, 2013

If my sensor had 41mp I would use it for every single shot (even for a 4mp snap ) because *not* using all 41mp means it's not capturing all of the available light and ~information~ of the image. So, your point about how often a 41mp *final* resolution is rarely needed is totally valid, but it doesn't discount the need for a 41mp sensor for every shot -- so really the follow on question is "why is a 41mp sensor useful for a low-res final shot?". I don't actually know much about pureview, but in general the answer lies in the benefit of --oversampling-followed-by-interpolation-and -downsampling-- which are staples of --discrete-(e.g. pixel)-signal-processing--. I probably wouldn't do a very good job explaining it, so I would encourage you to search around. But imagine two diagonal pixels of a 4mp sensor, each resolving to a color, now imagine chopping each of those into 9x9 sub-pixels of a 41mp sensor (each with it's own resolved color). Then you can create a better final 4mp shot from the 41mp pixels by averaging them to get to the final values for the two diagonal pixels of the 4mp image (this is called "interpolation"). There is another advantage of oversampling in that it can mitigate an effect called "aliasing", which is more difficult to describe without images/drawings. There are actually many other cool signal processing tricks (e.g. ultra-pixels) which are difficult to explain but offer advantages and tradeoffs, and so instead of getting caught up in marketing hype it is better to evaluate the tech by comparing final images of a controlled test, right?

10. ArtSim98

Posts: 3535; Member since: Dec 21, 2012

Ahh, Nokia, they're so smart!

31. tigermcm

Posts: 861; Member since: Sep 02, 2009

my comment as well as a good chunck of others disappeared from here.......

33. TheBitterrTruth unregistered

Where the hell is thumb down option?

35. daniel_bargs

Posts: 325; Member since: Nov 27, 2010

how much is the size of the pictures... even though that has 41 MP... i think ill just use an 8 mp if not that important....an 8mp already costs 1.5mb! 41MP might be 5mb-8mb already haha :)

37. jsdechavez

Posts: 793; Member since: Jul 20, 2012

Good choice.. Better noise-free photos too the lower you go with the Pureview Pro Phase 1

38. jsdechavez

Posts: 793; Member since: Jul 20, 2012

Hats off to Mr. Damian Dinning. He knows his stuff. Hope he goes back to Nokia...perhaps in better times.

39. Droid_X_Doug

Posts: 5993; Member since: Dec 22, 2010

And now we know why the EOS line will always have a hump - the mechanical shutter + xenon flash. But then, why doesn't the L928 have a hump? It is equipped with a xenon flash. (confused)

40. sbw44

Posts: 433; Member since: Dec 04, 2012

Just wanted to ask that question, but according to GsmArena's review of the 928 it seems the Xenon flash does not do the job and they even say that it may have been implemented wrong. So maybe the 928 does not have a powerful Xenon like the 808 or n8

* Some comments have been hidden, because they don't meet the discussions rules.

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