What is happening in this photo? Is it banding?

[Brooklynboy]

I took these pictures with the Fuji X-T2. This issue only happened on these photos. I'm not sure what caused it. 

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Edited June 12, 2017 by Brooklynboy

[milandro]

Yes,  banding due to the light frequency interfering with the electronic shutter.

 

Many forms of artificial light are not continuous but intermittent producing on-off light cycles with a certain speed.

 

The same happens also with television or cinema screens.

 

If you shoot at speed faster than the  frequency of the light source this will returns bands of light where the light is effectively off when you shot the picture.

 

In the olden days you could also check the shutter speed by counting the lines of the television screen (different in PAL or NTSC). I suspect that this light source was a LED. You can also observe bands of different color ( Green and Magenta) as the the light switches between on and off.

 

Shooting at a longer shutter  (1/30 to 1/15 )speed should take care of this.

 

 

Find here an article which will help you.

 

 

https://www.getdpi.com/forum/fuji/56729-fuji-x-electronic-shutter-test-banding.html

[Adam Woodhouse]

I've seen this before due to florescent lights.  I was told to shoot @ 1/60.  Don't know if that was correct of can correct problem, but it might.

[Brooklynboy]

Does it matter if I shoot silent shutter? 

[milandro]

yes it does,  read the article and not, 1/60 is not (always) long enough  depends on the light source.

 

There are differences between fluorescent tubes and led and tungsten.

 

Besides there is a difference in 50Hz. or 60Hz.  current between countries using different systems.

 

 

We’ve already spoken about this

 

http://www.fuji-x-forum.com/topic/836-how-can-you-avoid-banding-using-the-mechanical-shutter-under-fluorescent-lights/

Edited June 12, 2017 by milandro

[Florian]

It's one of the major reasons why we still have mechanical shutters; disable electronic (silent) shutter and the banding will go away.

Edited July 4, 2017 by Florian

[milandro]

not really...

 

follow the link that I gave, banding will persist, under certain circumstances, also with a mechanical shutter 

[Florian]

Hmm, had not realised that it would be possible for banding to occur with a plane shutter. However, it seems to me that it would be a much rarer occurrence. Interesting, in that specific case the banding would be linked to the speed of the shutter as opposed to the shutter speed

Edited July 4, 2017 by Florian

[milandro]

and to the light source.

 

of course this doesn’t happen if the shutter speed is long enough. One very important reason to stop thinking that shooting at 1.2 with depth of field paper thin would be a very good idea in a lot of situations

Edited July 4, 2017 by milandro

[smokey]

TS, what shutter speed u use?

it depends on where u stay and what electricity frequency ur place uses

my place uses 50 Hz...so if my shutter speed can be divided by 50, my pic will be free of banding...for example, 1/50, 1/75, 1/100...etc

but if i use odd shutter speed that is not multiples of 50 like 1/60, 1/120...my pic will have bandings

[CDBC]

TS, what shutter speed u use?

it depends on where u stay and what electricity frequency ur place uses

my place uses 50 Hz...so if my shutter speed can be divided by 50, my pic will be free of banding...for example, 1/50, 1/75, 1/100...etc

but if i use odd shutter speed that is not multiples of 50 like 1/60, 1/120...my pic will have bandings

 

That's a clever observation. 60hz where I live, though this banding problem isn't something I've encountered so far.

 

The shallow depth of field in the pictures, and overall lack of sharpness suggest a hand held camera at a relatively low shutter speed, probably with the lens close to full aperture.