Is this the shadow banding?

[Astroprojector]

I have Nikon Z7 and notice that when I take bracketed images the darker one have dark lines. Is there a fix for it?







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Astroprojector

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[PLShutterbug]

No, that is a mismatched light-source/shutter issue. There are other threads here that describe it and how to avoid it. Basically: use a longer shutter speed.

 

[michaeladawson]

No, that is a mismatched light-source/shutter issue. There are other threads here that describe it and how to avoid it. Basically: use a longer shutter speed.

Actually, I don't know what that is. To get light source banding you'd have to have a mismatched light source. I see no evidence of it in that shot. It looks like an empty house with no lights on.

You'd also have to be in silent shutter mode (electronic shutter) for the most part. Otherwise you'll just get shifting WB from shot to shot.

Are there any Venetian slat blinds on the windows to the left off-camera?

--
Mike Dawson

 

[PLShutterbug]

No, that is a mismatched light-source/shutter issue. There are other threads here that describe it and how to avoid it. Basically: use a longer shutter speed.

Actually, I don't know what that is. To get light source banding you'd have to have a mismatched light source. I see no evidence of it in that shot. It looks like an empty house with no lights on.

You'd also have to be in silent shutter mode (electronic shutter) for the most part. Otherwise you'll just get shifting WB from shot to shot.

Are there any Venetian slat blinds on the windows to the left off-camera?

Looking at the image again and the lack of the artifacts on the white wall in the room to right and you are probably right. Something to left of the camera is causing uneven lighting.

 

[Virtual Photon]

Any bracketed images or just these?

 

[Astroprojector]

Just the darker ones. But I think the issue is silent shutter. I have to do more testing.

 

[Astroprojector]

I think the issue is silent shutter. I have to do more testing.

 

[Astroprojector]

I think the issue is silent shutter. I have to do more testing.

 

[IainD]

To my very un educated eye they just look like shadows. Just ordinary shadows.

 

[aj_obx]

Definitely silent shutter interaction with the lights in the room. Use either a longer shutter speed or turn off silent shutter and use auto or full mechanical shutter mode.

 

[michaeladawson]

Just the darker ones. But I think the issue is silent shutter. I have to do more testing.

It’s not silent shutter unless you have some artificial lights in the room. You have yet to mention what the lighting is.

 

[Astroprojector]

There was no artificial lighting. It's all natural lighting from the windows.

 

[kenw]

As you already deduced this is silent shutter interacting with the artificial lighting in the room the camera is in. You can see the bands don't appear in the naturally lit room to the right.

That said, you can still get banding with the mechanical or EFCS shutter under artificial lighting but it is usually less visibly obvious because the curtain speed is faster and so the variation in exposure is spread over a larger area of the image. To minimize its effect regardless of the shutter used choose shutter speeds related to the mains frequency in your region (e.g. 60 Hz in US, 50 Hz in Europe). So in the US good shutter speeds would be 1/120, 1/60, 1/30, 1/15 regardless of the shutter used. Something like 1/200 or 1/100 is going to cause bands to appear - narrower more obvious bands with silent shutter and wider bands (really potentially as wide as the image is high such that you just get a gradient across the image rather than true bands) with mechanical shutter.

 

[kenw]

There was no artificial lighting. It's all natural lighting from the windows.

That's not at all what the image shows. There is a light with a color temperature quite different from natural light in the room the camera is in. And it magically has the exactly right band spacing to be from artificial light. You likely didn't notice it was on.

EDIT: Also look at the shadows, especially of the light switch on the right. The shadows indicate there is a ceiling light fixture generating this light.

--
Ken W
See profile for equipment list

 

[michaeladawson]

There was no artificial lighting. It's all natural lighting from the windows.

If in fact there was no artificial lighting then this can’t possibly be silent shutter.

 

[j_photo]

There was no artificial lighting. It's all natural lighting from the windows.

This looks exactly like fluorescent or solid state lighting mismatched with the shutter. I would be willing to put money on there being artificial lighting to left of camera.

 

[SoCalAngler]

There was no artificial lighting. It's all natural lighting from the windows.

That's not at all what the image shows. There is a light with a color temperature quite different from natural light in the room the camera is in. And it magically has the exactly right band spacing to be from artificial light. You likely didn't notice it was on.

EDIT: Also look at the shadows, especially of the light switch on the right. The shadows indicate there is a ceiling light fixture generating this light.

Also door knob on left with shadow at opposite angle from light switch.

 

[BasilG]

There was no artificial lighting. It's all natural lighting from the windows.

This is very unlikely to be correct.

 

[olyflyer]

I have Nikon Z7 and notice that when I take bracketed images the darker one have dark lines. Is there a fix for it?

That banding is caused by the light in the room. It would have been better to use a flash for balancing the light. I also don't know why the image is so noisy. Maybe caused by the bracketing or the underexposure. In my opinion, it is better to go in the other direction, i.e. pulling back on highlights and not pushing the shadows. Especially here, where the problematic areas are limited to the fairly small sunlit areas.

 

[olyflyer]

There was no artificial lighting. It's all natural lighting from the windows.

That can't be true. There is a shadow from the door knob pointing down in an angle which definitely is telling a different story, it shows that there was a light from above in that room. I don't think you had any mirrors and the natural light in that room is too low for the walls reflecting enough of it to create that long door knob shadow.

Edit: I notice now that there is also a shadow on the right side, pointing downwards from the light switch, but in the opposite direction to the door knob shadow, so my conclusion is that there was some roof light above the door. Also the top of the door frame (which is not really a door, but the opening to the right side room) is very light, which definitely is a third "give away".

So there was DEFINITELY some artificial light in that room where you stand, and that light was florescent, which causes the banding you see.