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Sensor flare?


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Hi Exodies,

 

thanks for your effort. At 200 ISO it's hardly to see. But as higher the ISO count goes it becomes more visible. But even in the 200 ISO pic it's there. If I brighten this up a bit it getting visible.

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So it looks like it's a feature of the sensor.

Don't know if I should be happy or sad. On one hand my M seemed to act normally, on the other hand it's not a feature that I'm keen on.

 

f-|

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ISO boost is just amplification. It does not influence the output of the sensor itself.

The only thing you are doing is amplifying a (weaker) signal from the sensor, so obviously you are amplifying existing artefacts as well.

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Guest odeon

I saw similar case in my camera. I used 50'lux at f/1.4. Second image is cropped.

I can't find any reason for that flare.

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Looks more like banding to me, which is consistent w/what I've seen when I've tried to bring up shadows in extremely underexposed areas. I can also see a touch of it in the D700 & D3X samples.

 

Here some 100% crops at 1250 ISO. Not always really 100 %. I sized all files down to the pixel of the D700 that has the smallest pixel-count, just to make them comparable.

 

M240

[ATTACH]441269[/ATTACH]

D700

[ATTACH]441270[/ATTACH]

D800

[ATTACH]441271[/ATTACH]

D3X

[ATTACH]441272[/ATTACH]

Here the M240 at 200 ISO

[ATTACH]441273[/ATTACH]

Even here you can see a trace.

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