Ask for a quick test

gadolf · April 20, 2019, 4:30pm

I followed the settings from this test: D3S Fixed Pattern Noise - shadows: Nikon FX SLR (DF, D1-D5, D600-D850) Talk Forum: Digital Photography Review

afre · April 20, 2019, 5:10pm

My instinct would be to set the f-stop to the one I would use to take my photos regularly.

For consistency, I will follow your instructions. Will upload in a bit…

Claes · April 20, 2019, 5:26pm

er… everything went fine until your step 4.1b:
Export to jpg 100% 1920

1920???

afre · April 20, 2019, 5:32pm

Here is my raw file, the second of two shots. NB. The max speed of my camera is 1/4000s and has a crop sensor.

_MG_1214.CR2 (17.8 MB)

@gadolf A crop without resizing is the way to go.

Claes · April 20, 2019, 5:32pm

In case you mean max width, here is mine:

Fuji X-T1 and I only have 1/4000 sec

gadolf · April 20, 2019, 5:37pm

Thanks, @afre.
Pushed it with filmic:

_MG_1214.CR2.xmp (1.8 KB)

afre · April 20, 2019, 5:40pm

Cool. Apparently my camera is more Scottish than both of yours.

gadolf · April 20, 2019, 5:46pm

lol…

Your camera’s model is from 2010, mine from 2005, Claes’s from 2014.

Can we draw a conclusion from what we have?

Are we seeing different stages of sensors life cycle (mine one step from the grave?..)

EDIT: Forgot to mention another thread from dpreview, not so technical as the other one, but where folks don’t have many questions in condemning a sensor with the same issue as mine: Canon 5d classic noise banding: Canon EOS-1D / 5D / 6D Talk Forum: Digital Photography Review

paperdigits · April 20, 2019, 5:56pm

Fuji uses a different sensor pattern, it’s not Bayer its xtrans.

gadolf · April 20, 2019, 5:57pm

Humm, so it would be nice to have a more recent camera example…

shreedhar · April 20, 2019, 6:28pm

I have EOS 6D. Fastest speed is 1/4000sec. Here is the link to the raw file with 1/4000, f/8, ISO200.
https://drive.google.com/open?id=1b39fa3yVq8W3HD5NRbRMkHCRR6M4bRQV

gadolf · April 20, 2019, 6:34pm

Thanks, @shreedhar.
Here is yours, a model from 2013.

IMG_0048.CR2.xmp (2.9 KB)

heckflosse · April 20, 2019, 6:49pm

May I ask what this is good for (without reading the dpreview thread)? Just being curious…

Claes · April 20, 2019, 6:54pm

Here is Lumix DMC-LX3

afre · April 20, 2019, 7:04pm

Something related to Dark-Frame - RawPedia and PIXLS.US - How to create camera noise profiles for darktable?

gadolf · April 20, 2019, 7:23pm

Sorry, I should have made it clear from the beginning.
I had already addressed this question before here in the forum when I edited a picture I took with this old camera I bought a month ago.
Today, while editing another picture, the bands showed up again but, this time, I researched the Internet to see what they mean, and found this post where they were doing the steps above to reveal the noise pattern.
I’ve asked for this test to confirm what they say on the web, which is, basically, the sensor end-of-life, and that a newer camera wouldn’t show that pattern.
So, although I still get good images when the light is good and uniform, it seems that the camera shows its limits in recovering deeper shadows.
Here’s the picture I was editing today (exposure + filmic):

EDIT: I tried using that black frame in Rawtherapee’s raw tab to reduce the effect, but no success.

gadolf · April 20, 2019, 7:33pm

Thanks, @Claes, another non-Bayer sensor, from a quick research (thank @paperdigits for pointing that)

afre · April 20, 2019, 7:36pm

Are you sure about that? I see otherwise: Panasonic DMC-LX3 Review - Specifications.

Claes · April 20, 2019, 7:50pm

LX3 is Bayer.

shreedhar · April 21, 2019, 6:31am

Life of camera sensor? never heard of that!