possible 1.04 firmware bug on the NX200?

[wictred]

ok, with RAW again

30mm and 18-55mm

funny thing is that I now get a lot more of that pattern on the 30mm in a second try.

looks indeed like some "correction" and it tries to guess how much to apply. if that'S linked to metering that would explain why it doesn't work perfectly well in low light (or in this case, no light).

30mm





18-55mm (@18mm)

 

[billzilla2000]

It reminds me of overlaid gels on a light or screen, as if it's anticipating color tint in those areas that needs correcting. And they shift a little in each picture, some more than others, but they're clearly variable in their arrangement other than being roughly centered (but not dead on, they seem to have some shifting going on).

Really weird. Heavy handed correction of some kind. I'd guess it's NOT sensor based though, since they move and aren't always there... Or are you finding they're always present with the cap on?

Virtual software lens filters?

 

[Ariston]

how about testing a Non-NX lens on the NX200?

and testing the 30mm or 18-55 on the NX100?

if the tests comes out negative, I guess it has something to do with how the NX lens react to the camera's sensor, possibly firmware or software correction.

 

[Ariston]

also looks like there is a variance per ring band. seems to me a correction or compensation for light fall-off or vignetting. possibly digital.

 

[wictred]

it's always there, but you have to push exposure and individual levels to ridiculous settings.

i wonder if it could still be reflection inside the thing. maybe some kind of glow? that would explain why it's only visible in dark to pitch black areas (can't be from the sensor. .. can it?)

 

[billzilla2000]

I don't see how the sensor could adjust itself like that. Not something that was a static filter or overlay, anyway. It could be firmware or wired into the image processing pipeline in a way firmware can't change, but my suspicion is that it's either an error in processing information from the lens itself or it's some kind of post sensor image capture processing thing.

If it was fixed in the lens, a kind of pre sensor filter (like AA) or something in the sensor itself I don't think we'd see variation in the artifact shapes and arrangement like we are.

 

[viking79]

It reminds me of overlaid gels on a light or screen, as if it's anticipating color tint in those areas that needs correcting. And they shift a little in each picture, some more than others, but they're clearly variable in their arrangement other than being roughly centered (but not dead on, they seem to have some shifting going on).

Really weird. Heavy handed correction of some kind. I'd guess it's NOT sensor based though, since they move and aren't always there... Or are you finding they're always present with the cap on?

Virtual software lens filters?

Remember, lenses are going to more software correction rather than optical correction. This is true with the m4/3 systems too. I would especially expect this in pancake lenses.

Eric
--
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)

See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

 

[Billx08]

So you think it's flare playing off the elements? It does have a kind of layered or segmented look. I don't have a hood for my kit lens, otherwise I'd test that, but I suspect that won't eradicate the effect completely.

Maybe not, but it would be pretty easy to make an effective lens hood using opaque paper that could be adjusted to match any focal length of a zoom lens. Anyone that has a lens hood for an 18-55mm lens isn't going to find it very effective from 30 to 55mm. More would be learned by shooting with the camera on a tripod and using say, a floor lamp providing the only light, and repositioning it for different shots. I'm suspecting that the rings are caused by reflections from the lens, either from the inner tubes or the rear lens element, and possible reflections from the sensor's AA filter going back into the lens, bouncing around and re-emerging onto the sensor.

 

[Ariston]

I tested the NX200 with another non-NX lens again. I now believe this has nothing to do with the sensor but rather some sort of image processing or correction done with the specific NX lens, some sort of a RAW profile application that causes the circular banding.

I'll do another test again for the NX100 with an NX lens and confirm if such application does not occur in it. furthermore, I noticed that some of the features/functions on the NX200 with concerns to NX lenses are disabled.

 

[mhike]

Has anyone tried resetting their cameras?

I've heard that makes the problem go away, along with firmware updates.

 

[Ariston]

Has anyone tried resetting their cameras?

I've heard that makes the problem go away, along with firmware updates.

which problem? the circular bandings are still there and I'm hoping that there is another hidden menu function or developer custom settings that contain such correction control. one thing I noticed is that I'm able do go back to the earlier firmwares but cannot reset to the original version 1.0 firmware because it is not available. I can confirm however that the bandings are there as early as version 1.01.

 

[viking79]

Has anyone tried resetting their cameras?

I've heard that makes the problem go away, along with firmware updates.

I don't think it is a problem, it is a side effect of software lens corrections in this case. What would be nice is if you could disable this for all lenses. I have really only noticed it in unrealistic situations. If I pushed my D700 shadows much I would get weird artifacts around light sources too (horizontal banding).

Eric
--
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)

See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

 

[Ariston]

Has anyone tried resetting their cameras?

I've heard that makes the problem go away, along with firmware updates.

I don't think it is a problem, it is a side effect of software lens corrections in this case. What would be nice is if you could disable this for all lenses. I have really only noticed it in unrealistic situations. If I pushed my D700 shadows much I would get weird artifacts around light sources too (horizontal banding).

Eric
--
I never saw an ugly thing in my life: for let the form of an object
be what it may - light, shade, and perspective will always make it
beautiful. - John Constable (quote)

See my Blog at: http://www.erphotoreview.com/ (bi-weekly)
Flickr Photostream: http://www.flickr.com/photos/28177041@N03/ (updated daily)

Yes. that's the only thing I would want is the option to turn it off and on. although I don't see this as a problem since I rarely adjust exposure. although, I would still want that option in certain lowlight situations where I would want to remain at base ISO with acceptable shutterspeed and just push exposure. besides, it would be a waste since the sensor has practically have great DR at low ISOs. I'm just saying that this advantage should be exploited, rather than limit it.