>
New Topic
>
Reply<
Esato Forum Index
>
Manufacturer Discussion >
Nokia
> What is Nokia PureView?
Bookmark topic
i think Nokia lumia 920 is great phone..but it lost purview for this phone....
--
Posted: 2012-09-15 14:36:28
Edit :
Quote
I used to say in other forums
What if sony's trick about the BSI and nokia's decision of packing bigger sensors in such small modules be combined, thatd be great. And i remember being replied that it's not gonna happen ever. But it seems to me it's only a matter of time when all the pureview phases come together, my wish will come true.
I knew from the start the BSI is a good idea but sony reduced its size dramatically so the bsi effect was defeated. Sonymust release its new breed of cybershot series phones, hoping to see innovations not just noise reduction algorithms, image sharpenning algorithms and color aggravation, before nokia winds up its pureview phases together and relase a true pureview phonecam
--
Posted: 2012-09-16 06:57:28
Edit :
Quote
^ Well.. the point of using BSI sensors is the fact that you can push the size of the pixels further down. I think FSI caps out at 1.4 microns, and if you want to go smaller, you need BSI. There are issues with light reaching the FSI sensor when the pixels get too small, which is whats happening with all the newer model 13Mpix modules. If you actually have physically bigger pixels available, FSI is still the better option.. that is why all the FF DSLRs are still using FSI sensors. Also cost.. but that is another topic.
So right now its a balancing act.. BSI should be able to provide enough light, to where a 13Mpix BSI module @ 1.1 micron pixels, should yield a similar/or slightly better image quality compared to a 8Mpix FSI module @ 1.4 microns.
What Nokia did with the 808, kind of throws off what the industry has been dealing with for years. They took bunch of 1.4 micron pixels, and started combining them, and cleaning all the unnecessary information (like noise, etc.) out of there in the process. Technically, you are not supposed to have that kind of quality out of 1.4 micron FSI module.. but they found a way around it. Just look at your own night shots.. most people don't even realize how big of a technical achievement the 808 really is.
Everything is revealed when you take a shot at full resolution, then you can see the mediocre 1.4 micron pixels doing, what they do best.. creating noise.
So... BSI has a lot of potential, but it needs more work. For now, its used to help all the marketing that comes along with the "megapixel" war. It enables the OEMs to go further up in megapixel count, but at the same time keep the same sensor sizes.. which are around 1/3" for most smartphones. All in all, for us the consumers, all of this doesn't do anything really.. we still end up with the same shitty quality that we've been getting for years..
[ This Message was edited by: cu015170 on 2012-09-18 07:20 ]
--
Posted: 2012-09-18 08:10:54
Edit :
Quote
Some more info about the sensor
http://mblog.gsmarena.com/nokia-lumia-920-image-sensor-pictured-sized-up-against-the-808-pureview/
--
Posted: 2012-09-19 17:11:00
Edit :
Quote
It's not true that phase two is not on par with phase 1!
When the Lumia 920 gets out, this will all be clarified!
I was at first all disappointed too. But turned out Nokia achieved more than they sold us at first! They need to learn some marketing tricks from Apple.
Anyway, been there, saw what the 920 is capable of, had my D7000 with me, did my own tests on the same set-up. I know what I'm talking about. Wait and see..
But just a clarification about the key points each phase is about:
Phase 1 with 808:
- 3x lossless zooming. Amazing achievement, very handy. Though the quality of the zooms is not something that special.
- 5MP or 8MP PureView photos. Very low noise levels, incredible detail on par with high-end cameras. However, in normal lighting, only pixel peeopers would care about that. If you wanna end up printing that on a 15x10 photo, or uploading it online, the 808 or even that photo of a professional DSLR won't make a difference!
The key point was in reduce noise levels in low light. But that's where the 920 shines! It blows the 808 out of the water. And it's the one area all cameraphones struggled with since eternity!
808 has the Xenon advantage of course for flash photos. But the new fast pulse LED is said to come close to Xenon performance. We shall see about that. Asked to test that but there was no good set up for such a test.
**Note that a normal photo shot by high-end DSLR at daylight doesn't lead to any significant differences over any compact camera or a cameraphone. But using some features/options with such cameras does make some impossible photos with compacts possible. Either by using filters, specialised lenses, or doing bokeh photos, or professional portraits, etc..
But overall, the you get the idea.
Phase 2 with 920:
- As mentioned, low light photography.
- Professional video stabilisation.
[ This Message was edited by: false_morel on 2012-09-22 18:42 ]
--
Posted: 2012-09-22 19:40:29
Edit :
Quote
http://www.youtube.com/watch?v=Ur4phV2oxlA
Respect.
--
Posted: 2012-09-25 06:05:35
Edit :
Quote
Oh btw, I pushed for some answers from Nokia reps at Photokina and got some:
- Lumia 920 goes up to 1/3 sec SS on automode and up to 1 sec on night mode!!
- It has an ISO range of 100 to 800. It usually shoots in those low shots up to 200 ISO.
- Saw the video stabilization and it works pretty well.
- Smartshoot blew me away!! The guy took a group photo where we changed our faces during the 4 seconds time. And then he only had to tap on each face to go through the different faces and stay on the one preferred!! Smartshoot generally recognizes any subjects moving in the frame and can remove completey or manipulate them.
- Cinemagraph also demoed and works well as well!! Photos end up .gifs..
I also to got photos of the set-up Nokia made with my D7000 and 16-85 VRII lens from Nikon. It's the latest image stabilization tech from Nikon, makes up to four complete stops!
Now on the zoom lens I had a max aperture of F3.5, so had to boost the ISO up to compensate for the lost stops there, compared to F2.0 on the Lumia. The goal was of course to shoot with same shutter speeds of the Lumia at same exposures as well, and see if my D7000 can output blur free photos at these shutter speeds!
(Lumia has F2.0 and assumingly shooting at ISO 200, I had to go two stops up with F4.0, then two stops downs with an ISO 800 for an equivalent exposure)
First off, here is the set-up Nokia made, just to see how ridiculously dark that is. The Lumia 800 of my friends didn't manage to capture anything. Complete blank photo!!
(Following two images not shot by me)
And here are my results:
Aperture mode: F4.0, ISO 800, camera went for 1/3 sec SS. Same as the Lumia on automode.
Result is good. No blur.
Manual mode: F4.0, ISO 800, SS 1/2 sec. Blurry. Acceptable to some extent but generally no good.
Manual mode: F4.0, ISO 800, SS 1 sec! No chance! But beautiful exposure. Imagine Lumia 920 shooting at 1 seconds and getting steady images!! (Rep did tell that at 1 sec one better has steady hands; no caffein or alcohol effect. But steady photos are surely achievable!)
And as a bonus, here's the photo the cam went for at P mode with a fixed 35mm DX lens (52mm equivalent, hence the narrower view): F1.8, SS 1/25 sec, ISO 6400!! (max aperture and max ISO) Just to tell how dark that was!!
And here are the camera modules of both 920 and 808 (920 on top):
[ This Message was edited by: false_morel on 2012-09-26 02:47 ]
--
Posted: 2012-09-26 03:45:39
Edit :
Quote
That's all awesome, but we are yet to see ANY sample from 920. Currently all we have is the Nokia bragging everywhere how awesome it is, without giving any samples. I call bullshit on Nokia
Something is fishy with all these comparision and 0 sample photos.
--
Posted: 2012-09-26 11:05:15
Edit :
Quote
There were several samples released by Nokia.
No ful resolutions ones yet since the processing algorithms are finalised yet. But Nokia wanted to demonstrate the longer shutter speeds the cam could achieve handheld. And also OIS for video.
And I saw live demo in front of my eyes with the 920 shooting that set-up and getting incredible results.
--
Posted: 2012-09-26 22:06:16
Edit :
Quote
New Topic
Reply
