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post pictures taken with your: sony ericsson K850 |
borg_
Joined: Feb 20, 2004
Posts: > 500
From: Algarve - Portugal
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Superb photo DonJuan  
@Radiux399 i think that you have the zoom working when you took those photos ??? That's the reason why of so bad quality
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 K850i Velvet Blue +  HPM-70 Black Edition + 4GB M2 Sandisk +  ERICSSON Technology T39m
[ This Message was edited by: borg_ on 2007-11-30 00:45 ] |
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Radiux399
Joined: Sep 06, 2007
Posts: 246
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DonJuan: Its not a night shot. Its daytime.
Borg: No, its not zoomed in. Its a 100% view (1:1) crop of the full image.
Basically, everyone here is showing tiny reduced size 800x600 (or less!) images from their phones. Of course a 5 megapixel image is going to look good when its shrunken down to 0.5 megapixels - its 1/10th the size! What i'm trying to demonstrate is that looking at the image in its full resolution has tons of noise and artifacts. I've looked at hundreds of shots taken by the K850 on Flickr, and they ALL have varying degrees of this noise. I'd like to see a 100% crop of a K850 photo that doesn't exhibit this. |
DonJuan
Joined: Jul 27, 2006
Posts: > 500
From: Las Vegas
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oh i see, why are you worrying about this though, how often do you print your pics out?
thank you borg 
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sadeghi85
Joined: Oct 13, 2007
Posts: 341
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On 2007-11-30 01:52:47, Radiux399 wrote:
DonJuan: Its not a night shot. Its daytime.
Borg: No, its not zoomed in. Its a 100% view (1:1) crop of the full image.
Basically, everyone here is showing tiny reduced size 800x600 (or less!) images from their phones. Of course a 5 megapixel image is going to look good when its shrunken down to 0.5 megapixels - its 1/10th the size! What i'm trying to demonstrate is that looking at the image in its full resolution has tons of noise and artifacts. I've looked at hundreds of shots taken by the K850 on Flickr, and they ALL have varying degrees of this noise. I'd like to see a 100% crop of a K850 photo that doesn't exhibit this.
It's because of "sensor size". K850 and T650 cameras have same(or near?) sensor size:
...A hefty-megapixel image sensor, however, doesn't ensure amazing photo quality. Other aspects of the camera's optics and electronics play important roles too. For example, a 6-megapixel sensor in a compact camera will be in the neighborhood of 7mm x 9mm in physical size, but a 6-megapixel sensor in a digital SLR will be 15mm x 23mm or larger. That means that each of the photosites (photosensitive diodes that collect one pixel's worth of light) on the DSLR's sensor is physically bigger. These bigger photosites collect more light and result in better image quality and reduced digital noise.
from "Digital Photography Pocket Guide, Third Edition"
solution: use "PSP", "PS" or other photo editing tool to reduce digital noise, then shrink pictures to 3MP or less.
[ This Message was edited by: sadeghi85 on 2007-11-30 01:51 ] |
DonJuan
Joined: Jul 27, 2006
Posts: > 500
From: Las Vegas
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I hope the k900 has a really good sensor next, if it doesnt ill be disappointed |
Radiux399
Joined: Sep 06, 2007
Posts: 246
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It's because of "sensor size". K850 and T650 cameras have same(or near?) sensor size:
solution: use "PSP", "PS" or other photo editing tool to reduce digital noise, then shrink pictures to 3MP or less.
[ This Message was edited by: sadeghi85 on 2007-11-30 01:51 ]
Thanks for the explanation. I know that most real cameras have a larger sensor, as well as a larger lens. However as far as I can tell, the T650i has a much smaller lens compared to the K850i.
However, noise (as in low light noise) isn't what i'm really concerned with. Instead what i'm seeing is some kind of digital compression done by the camera software in order to hide the noise. The way pixels from one part of the image "spill over" into adjacent parts is usually from poor camera software, not from a poor sensor. Or perhaps it is the sensor. Either way, the one on the T650i is much smaller, and yet still manages to do a much better job. |
DonJuan
Joined: Jul 27, 2006
Posts: > 500
From: Las Vegas
PM |
A 5 mega pixel camera can print out 8 x 10 inch pictures at its full resolution. I would only print out on 5 x 7 and the pic's look good to me. If i were viewing them at the full size you were looking at i'd be bothered. But if your not printing out your pic's 8 x 10 then why worry about it? |
DonJuan
Joined: Jul 27, 2006
Posts: > 500
From: Las Vegas
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a couple i took today at work
we got a new shipment in
our main feature....
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plankgatan
Joined: May 20, 2007
Posts: > 500
From: Sweden fur alle
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k850 have a good sensor, easily one of the best on the market...it could have a little bigger/stronger lens, (special the focal lenght could be little bigger)...k850 have better(more sensitive) sensor then ex, N95, (just look at the low light, indoor pictures, they are allways better,(have allways best details).
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DonJuan....you seems to "like" this girls to...he he he
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I k850i, w810i & T28
[ This Message was edited by: plankgatan on 2007-11-30 07:53 ] |
tai020381
Joined: Dec 07, 2004
Posts: > 500
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On 2007-11-29 18:58:15, TZWXSL wrote:
@tai020381
you from sg?
Yep ^^ |
DonJuan
Joined: Jul 27, 2006
Posts: > 500
From: Las Vegas
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lol Plank you know whats funny, doing the face warp on the mannequins |
plankgatan
Joined: May 20, 2007
Posts: > 500
From: Sweden fur alle
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he he he...seeeeexy
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sadeghi85
Joined: Oct 13, 2007
Posts: 341
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Instead what i'm seeing is some kind of digital compression done by the camera software in order to hide the noise.
what you mean? "bad noise reduction algorithm" or "fuzzy edges caused by lossy jpeg compression"? compression hasn't any effect on hiding the noise.
The way pixels from one part of the image "spill over" into adjacent parts is usually from poor camera software, not from a poor sensor. Or perhaps it is the sensor
can you explain more(with pictures)?
[ This Message was edited by: sadeghi85 on 2007-11-30 10:07 ] |
number1
Joined: Sep 12, 2007
Posts: > 500
From: UK,kent,Sittingbourne
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your right the k850i pictures are heavily compressed
this is from the k850i camdriver
50 // JPEG_INIT_QUALITY = 80d <<< what it aims to compress the picture at
46 // JPEG_FIRST_QUALITY = 70d<<<< what it tries next to compress the picture at
3C // JPEG_LAST_QUALITY = 60d<<< what it tries last to compress the picture at
so u could end up with a picture compressed at 60% lol even k800i manages 90% = |
plankgatan
Joined: May 20, 2007
Posts: > 500
From: Sweden fur alle
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as long the pictures ends up good, who cares about some tech info
it take sharp macro, it take sharp portrait, it take sharp indoor & it take sharp flash pics....thats realy ok for me
k850 have one of the best camera on the market.....thats also realy ok for me
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I k850i, w810i & T28
[ This Message was edited by: plankgatan on 2007-11-30 13:16 ] |
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Posted: 2007-11-30 01:43
