| Author |
Sony Xperia Z2 |
Hilmawan
Joined: Apr 07, 2014
Posts: 98
PM |
@ aussieland1
I'm not an expert, but I'll explain what I'm trying to say.
A centering defect originates in a misaligned lens
element or lens group. The result is a blurry corner, an
off-coplanar projection (symmetrical blur) or object edge
shadows. A centering defect is normal to some degree -
there's simply no perfect lens out there, not even a
Leica. Generally centering problems are more obvious
with large aperture lenses. |
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ascariss
Joined: Apr 06, 2013
Posts: > 500
PM |
On 2014-08-04 13:50:07, itsjustJOH wrote:
I'm no photography expert, but if I remember it right that the G lens is supposed to increase the bokeh effect of the camera. I don't know, probably the G lens is just not as good in mobile camera as it is on DSLRs.
Technically the G lens doesn't increase the bokeh effect but is supposed to have a large aperture to create a nice bokeh effect. That being said, bokeh is connected with large aperture. The Z1/Z2 both have the G lens, but this is probably a marketing gimmick until someone takes apart the camera module to see what is in side.
What helps is the large aperture that Sony has used in the Z1/Z2 camera so this provides with a nice shallow depth of field. Unfortunately this can't be changed on the sony, so close up photos look much better than photos taken of open scenery where the corner softness is more apparent.
Hopefully Sony has seen the reviews of the camera comparison's and isn't blind to ignore them and will hopefully fix this for future phones, Z3, unlikely, but further on? probably. The curved sensor should help, but that is still some time off in the future. |
Bonovox
Joined: Apr 13, 2008
Posts: > 500
PM |
http://www.xperiablog.net/201[....]st-lg-g3-galaxy-note-3-and-s5/
Z2 against the competition with regards to heat
Phone?? What phone?? |
cu015170
Joined: Oct 26, 2010
Posts: > 500
PM |
On 2014-08-04 16:21:16, Hilmawan wrote:
@ aussieland1
I'm not an expert, but I'll explain what I'm trying to say.
A centering defect originates in a misaligned lens
element or lens group. The result is a blurry corner, an
off-coplanar projection (symmetrical blur) or object edge
shadows. A centering defect is normal to some degree -
there's simply no perfect lens out there, not even a
Leica. Generally centering problems are more obvious
with large aperture lenses.
That's a good summary, thank you!
Its not easy to make such a small lens as wide and maintain sharpness from edge to edge.. my old Nokia N8 often blurred the right side of the phote, my 808 does it as well from time to time but not always, and almost all 1020s do it as well.
Sony is not the only one..
Apple gets away with it by using a very narrow lens.. pics are almost square  |
Hilmawan
Joined: Apr 07, 2014
Posts: 98
PM |
I don't know about the latest iPhone 5 and 5s but the iPhone 4 and 4s has the same problem.
http://www.imaging-resource.com/PRODS/IPHONE4S/IPHONE4SA.HTM
www.imaging-resource.com/PRODS/IPHONE4/IPHONE4A.HTM
I'm 100% sure the real expert like IR can easly show us that all smartphone in the market has the same problem with the Z2.
Anyone who talk shit about the Z2 they clearly have no idea what they are talking about.
AFAIK the Z2 camera is one of the best performer even outperform the S5, because the Z2 is not only able to take lovely pictures/videos in good light or stable condition.
You will get great to acceptable results in almost every situation with the Z2. |
aussieland1
Joined: Apr 11, 2013
Posts: > 500
PM |
On 2014-08-04 16:21:16, Hilmawan wrote:
@ aussieland1
I'm not an expert, but I'll explain what I'm trying to say.
A centering defect originates in a misaligned lens
element or lens group. The result is a blurry corner, an
off-coplanar projection (symmetrical blur) or object edge
shadows. A centering defect is normal to some degree -
there's simply no perfect lens out there, not even a
Leica. Generally centering problems are more obvious
with large aperture lenses.
Thank you for the explanation. However the point is that while corner blur is normal for most of the cameras as per your post the photos taken by Z2 in open scenery are displaying too much if it . Before some of you will start saying that this is normal and that I have no idea what I am talking about - those 2 links for Fuji and canon cameras (from image resourcing) for the photos taken in open scenery were a lot more sharper, there was hardly any blur
[ This Message was edited by: aussieland1 on 2014-08-05 08:49 ] |
ascariss
Joined: Apr 06, 2013
Posts: > 500
PM |
On 2014-08-05 08:56:31, aussieland1 wrote:
On 2014-08-04 16:21:16, Hilmawan wrote:
@ aussieland1
I'm not an expert, but I'll explain what I'm trying to say.
A centering defect originates in a misaligned lens
element or lens group. The result is a blurry corner, an
off-coplanar projection (symmetrical blur) or object edge
shadows. A centering defect is normal to some degree -
there's simply no perfect lens out there, not even a
Leica. Generally centering problems are more obvious
with large aperture lenses.
Thank you for the explanation. However the point is that while corner blur is normal for most of the cameras as per your post the photos taken by Z2 in open scenery are displaying too much if it . Before some of you will start saying that this is normal and that I have no idea what I am talking about - those 2 links for Fuji and canon cameras (from image resourcing) for the photos taken in open scenery were a lot more sharper, there was hardly any blur
[ This Message was edited by: aussieland1 on 2014-08-05 08:49 ]
Comparing a mobile camera to 2 dedicated point and shots with vastly superior optics and larger sensors is probably not ideal. Both of these cameras also have dedicated image processors, DIGIC 5 and EXR, something the Z2 lacks; the bionz whatever it is on the z2 is not a dedicated chip.
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Bonovox
Joined: Apr 13, 2008
Posts: > 500
PM |
One smartphone I didn't see any corner blurring on was the Galaxy S4 but that has a narrow FOV. When I had the S4 it was consistently pin sharp
Phone?? What phone?? |
Hilmawan
Joined: Apr 07, 2014
Posts: 98
PM |
@Bonovox
I'm pretty much agree with you the S4 has very good lens or processing SW (i'm not sure wich one).
From DPReview Image Quality Comparison tool i only notice very minimal blur on the bottom left side.
I'm also surprise that the S4 doing a better job than the S5 with the corners.
In fact the S4 is the best performer for sharpness in the corners the S5 takes 2nd place (If my monitor doesn't lie to me).
And almost every other phones has the corner blurring problem even the mighty Nokia Pureview with their Zeiss lens.
http://connect.dpreview.com/p[....]galaxy-s5-camera-review?page=9
@aussieland1
Just look at DPreview image quality comparison tool!
you can clearly see that the Z2 is not the only one with blurry corner.
[ This Message was edited by: Hilmawan on 2014-08-05 16:34 ] |
cu015170
Joined: Oct 26, 2010
Posts: > 500
PM |
The lens is only part of the problem, its their immature JPEG processing which causes the most issues. The good thing is that it can be updated, the lens can't..
Hopefully their 3rd try would be the charm.
On 2014-08-05 16:32:46, Hilmawan wrote:
And almost every other phones has the corner blurring problem even the mighty Nokia Pureview with their Zeiss lens.
A lot of the original PureView devices don't exhibit much softness anywhere on the frame, despite the wide fov
see this
http://www.esato.com/phonepho[....]ureview/201208131830ED6tLW.jpg
https://o1elvq.bn1.livefilest[....]wF__Vzd4CM/2014-08-04-2350.jpg
[ This Message was edited by: cu015170 on 2014-08-05 17:40 ] |
Hilmawan
Joined: Apr 07, 2014
Posts: 98
PM |
Sometimes it is difficult to see the blurring in the image just from random scenes.
Just like what happened to the aussieland1, he couldn't find any blurry corner in the Fuji and canon open scenery photos.
I guess that's also the reason why the IR requires Lab scene test to show us a centering defect on fuji and canon cameras.
Since the S4 camera modul including the lens is made by Sony i believe the there is only 2 reason why the S4 doing a better job than the competition
1. Samsung processing SW is really good.
2. They using narrow FOV.
But i agree with you Sony mobile division need to ask for help from their imaging division who handles the RX cameras to fix their JPG processing SW. |
cu015170
Joined: Oct 26, 2010
Posts: > 500
PM |
^ yeah, but with the 1020 and the Z2 is pretty obvious in a landscape setting..
Check this out..
https://www.youtube.com/watch?v=VLr1ffi9ras
people are melting icecubes to prove a point these days.. wtf. |
doministry
Joined: Apr 13, 2007
Posts: > 500
From: PL
PM, WWW
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 DSC_0671_20140812003800904 by doministry, on Flickr
Night landscape, edited with filter from Pixlr.
[ This Message was edited by: doministry on 2014-08-12 10:12 ] a w a r e |
itsjustJOH
Joined: Jul 23, 2012
Posts: > 500
PM |
^Dude that's awesome! Looked at your flickr album and you have a lot of impressive shots as well! Why not upload them here in esato?
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doministry
Joined: Apr 13, 2007
Posts: > 500
From: PL
PM, WWW
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Yeah. Thanks! Why not!
Vienna
Also filtered by Pixlr
Warsaw 1
On the way
Brussels 1
warsaw again
[ This Message was edited by: doministry on 2014-08-13 00:57 ] a w a r e |
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Posted: 2014-08-04 16:21
