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Re: [OM] 5D II pattern noise problem

Subject: Re: [OM] 5D II pattern noise problem
From: iwert bernakiewicz <zuikooh@xxxxxxxxx>
Date: Tue, 1 Dec 2009 17:28:26 +0100
Hello CH,

Now I can see it @ 100% and +1, ambient light was too much during the day.
I don't think it is very excessive, and will print well. That doesn't
take away that canon noise is horrible compared to for example E-1
noise. It has a very digital look, not analog. That is the one thing I
don't like about the 5D @ high iso, however there is more detail in
the image...

Iwert


2009/12/1 C.H.Ling <ch_photo@xxxxxxxxxxxxx>:
> Actually, at 100% veiw, I see pattern noise even without boost (no +/-
> compensation on RAW converter). If you don't see the pattern noise (on the
> smoky sky) at +1 your monitor is too dark, just try +2 you must be able to
> see it.
>
> I have not try to print it but it should be visible on the brighter area.
>
> C.H.Ling
>
> ----- Original Message -----
> From: "iwert bernakiewicz"
>
> Hello CH,
>
> Where do you see the problem in this image? I opened it in DPP and
> don't see obvious pattern noise at +1 stop (but I'm looking at an old
> macbook screen which is maybe too dark). Is the pattern visible when
> printed?
>
> All the best,
>
> Iwert
>
> 2009/12/1 C.H.Ling <ch_photo@xxxxxxxxxxxxx>:
>> When you shot RAW and push the exposure to near 1 stop you will see it.
>> Here
>> is an example:
>>
>> http://www.accura.com.hk/temp/IMG_7622.CR2 (8MB)
>>
>> C.H.Ling
>>
>> ----- Original Message -----
>> From: "Joel Wilcox"
>>
>>> On Mon, Nov 30, 2009 at 10:09 AM, C.H.Ling <ch_photo@xxxxxxxxxxxxx>
>>> wrote:
>>>> Just a note to the potential buyer for 5D II (I heard similar problem on
>>>> 50D
>>>> too). I found some pattern noise on my 5D II at low ISO so searched the
>>>> net
>>>> and found some peoples reported similar problem. The only solution is to
>>>> avoid under exposure.... :-(
>>>>
>>>> http://photo.net/canon-eos-digital-camera-forum/00Rjyp
>>>
>>> In other words, if you underexpose 1 stop and use the raw converter to
>>> bring up the exposure to normal, there will be some banding? If that
>>> is what you mean, would this occur even in exposures where all of the
>>> pixels are visible in the histogram (i.e., no clipping at the left)?
>>>
>>> Joel W.
>>
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