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Thread started 22 May 2010 (Saturday) 11:24
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Banding on 5d2 but not on another.

 
zincozinco
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May 27, 2010 16:48 |  #31

It is sort of fixed - the maze is gone but at 200 there is still a pattern. If only Nikon had a small body FF about 20mp. Im thinking switch - but too what?? No not the D700 it does not cut it in the MP.

:)


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John ­ Sheehy
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May 28, 2010 08:02 |  #32

Bill Boehme wrote in post #10244570 (external link)
I also see an indication that the image has been tone-mapped -- depending on the amount of tone mapping, that may explain what you are seeing. Anytime that you drag darker parts of an image out of the gloomy depths where they reside into the light of day, it will also drag along the ugliness of the dark areas.

Yes, it is usually noisier down there, but there doesn't have to be banding, nor any noise due to simply being under-exposed; it shouldn't be any worse than using a higher ISO, except that the camera adds ugly noises, which aren't a necessity of physical reality, or of under-exposure, per se.

And, don't forget that even a one stop increase in brightness means that each incremental tone step will be equivalent to two incremental tone steps in brightness of a correctly exposed area. Although the effect is very faint, you might also want to take a peek at the histogram to see if any "picket fencing" is starting to develop.

Well, no Canon suffers from posterized RAW data. They always have more than enough bits in the RAW not to suffer. Looking at the RAW histogram in general is not enough to determine if there is visible posterization. One histogram could be solid, and the other with gaps or doubled-up spikes, and the former could actually be more posterized, if it has a lot less noise.




  
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John ­ Sheehy
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May 28, 2010 08:05 |  #33

HKGuns wrote in post #10251734 (external link)
Sorry, I have 1D4 not 5D2 AND I have better ways to spend my time. If I can't see issues in the shadows of a real picture I'm not going to go looking for problems. by taking pictures of my lens cap.

The 1D4, from the samples I've seen, has the same low-ISo problem as the 5D2. Unbanded Canon shadows seem to be history, at this point. Even at high ISOs, 1D4s have blackpoint calibration issues between odd and even lines which keep them from being even less noisy at very high ISOs.




  
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timnosenzo
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May 28, 2010 08:36 |  #34

zincozinco wrote in post #10257615 (external link)
It is sort of fixed - the maze is gone but at 200 there is still a pattern. If only Nikon had a small body FF about 20mp. Im thinking switch - but too what?? No not the D700 it does not cut it in the MP.

:)

Sony


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magwai
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May 28, 2010 10:27 |  #35

that looks like a jpeg artifact to me.

if you use DPP or PS to view a raw file do you see them?

edit: pls ignore, read the mouse maze thread now. interesting.

i have pixel-peeped mine often enough to know there is nothing like that there.




  
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zincozinco
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May 28, 2010 11:54 |  #36

magwai wrote in post #10261414 (external link)
that looks like a jpeg artifact to me.

if you use DPP or PS to view a raw file do you see them?

edit: pls ignore, read the mouse maze thread now. interesting.

i have pixel-peeped mine often enough to know there is nothing like that there.

Maybe you should read it all - there was a problem and it does exist but not on all 5d2s.


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czynot
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May 28, 2010 12:28 |  #37

zincozinco wrote in post #10261912 (external link)
Maybe you should read it all - there was a problem and it does exist but not on all 5d2s.

ture. My 5D dont have any problem. I dont have lines or mazes even at 6400 ISO. This maze or noise banding shows up in some 7D, 5D and 1D/s.
7D has noise banding show up once in a blue moon or when the sensor get hot.
I wrote "high iso at dark picture show noise banding" this is just to show that noise banding is there in high iso. Not that I have any of this problem at 200ISO or 6400ISO.
Not that i take pic with cap on. But y not? "Beauty is in the eye of the beholder"


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zincozinco
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May 28, 2010 13:27 |  #38

again - this is not an high ISO problem - its a faulty main board and system buss and can be seen on all isos and on all exposures of any kind under all circumstances and then some :)


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zincozinco
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Jul 01, 2010 09:18 |  #39

Camera is back into CPS Spain. I dont wanna be an ass....e but since there is class action suits for faulty antennas on iphone and what not , this is quite a legit reason - it has cost me altogether 3 weeks of work and airline tickets, car rental hotel etc....


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zincozinco
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Jul 01, 2010 09:32 |  #40

this is what it looks like after canon service, I have tonemapped one so that the problem is more obvious.


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zincozinco
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Jul 01, 2010 09:35 |  #41

p.s i dont want this to be a one man band, but i hope that the irony of my "LAw suit" shines through - I just want it fixed :)


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swag72
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Jul 04, 2010 10:37 |  #42

Interesting read. My 5D2 went back to CPS in Spain (Barcelona) due to my LCD dying. It has come back from the menders and is now exhibiting the maize pattern. Never did it before, I would definately have noticed this before as it took my breath away.

So, do I contact CPS again? What can be done about it?


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zincozinco
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Jul 29, 2010 06:51 |  #43

A very important update to 5d2 owners. I have just received a new in box 5d2 from Canon. They acknowledged the problem.


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René ­ Damkot
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Jul 29, 2010 18:40 |  #44

Good :)


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swag72
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Jul 30, 2010 05:35 |  #45

That's good news - My 5D2 has been sent off to Canon UK and they said that they had dealt with this issue before as well. Not sure I'll end up with a new camera, but I'll be happy with it being fixed.


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Banding on 5d2 but not on another.
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