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A7SII, what is happening here in this image

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proveg51

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Hello, Just got into a7 world by picking up a7sII and after first few shots during daytime, I shot few in the house. I cant put my finger on it, but something is obviously not right, if there is more light, the lines dissapear.

Not sure if its ISO or shutter speed, but when i point the camera towards less lit scenes, I get the lines, they slowly move (up or down)

Should I have the camera replaced?

Thanks.



d8f6207fed654591b286e167ba69c11c.jpg



27040878770147fba20507041dfcb9fe.jpg
 
It looks like you are shooting with silent shutter turned on, or the particular shutter speed you are using is slightly out of sync with the house lights. Try turning silent shutter off, or changing the shutter speed. If the house light uses a dimmer, some dimmers slow down the strobing of the bulb which makes the strobing more noticeable when at lower brightness. At full brightness the strobing will be at normal ac power speed.

I'm 99.99% sure your camera is fine.

Cheers
 
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I agree, some lights are even cycling "by nature" (fluorescent lights) and if your shutter speed is not right you will catch uncomplete cycles (which give the darker lines). Use another type of bulbs (incandescent lamps have continuous light but with a heavy color cast - and they are no more available in France for instance because they are energy inefficient...) or simply a candle if you want to check your camera's low light ability.

Frenchie
 
These are led, on dimmer. Silent shutter does not affect anything, shutter speed in few tests didn't affect much, but canon does not get same effect.
 
have you tried shooting outdoors under daylight yet? If it's night, try turning the houselights off and grab a incandescent torch, turn on car headlights, or some candles as already suggested.
 
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proveg51 said:
These are led, on dimmer. Silent shutter does not affect anything, shutter speed in few tests didn't affect much, but canon does not get same effect.
Click to expand...
LED dimmers work as high frequency on-off switches (Google PWM. Basically if at 80%, 20% of the time they are fully off, 80% they are at 100%). So they are exactly like fluorescent lights unfortunately.
 
nagi603 said:
proveg51 said:
These are led, on dimmer. Silent shutter does not affect anything, shutter speed in few tests didn't affect much, but canon does not get same effect.
Click to expand...
LED dimmers work as high frequency on-off switches (Google PWM.
Click to expand...
Pulse Width Modulation. Basically the length of the on & off time is adjusted.



atmega168a_pwm_02_lrg.jpg


nagi603 said:
Basically if at 80%, 20% of the time they are fully off, 80% they are at 100%). So they are exactly like fluorescent lights unfortunately.
Click to expand...
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andrewD2 said:
proveg51 said:
These are led, on dimmer. Silent shutter does not affect anything, shutter speed in few tests didn't affect much, but canon does not get same effect.
Click to expand...
Try the electronic front curtain off. Seen banding with LEDs though not as defined as yours.

Andrew
Click to expand...
I usually see it in the form of phasing in and out as in LED christmas tree lights that don't all appear lit at any given time. The bands are a weird manifestation.
 
something I've noticed with 5dII and 5dIII and banding from flickering lights, is that turning the camera on and off sometimes eliminated the banding. I'm guessing the shutter speed shifted it's timing ever so slightly, even though the shutter speed reading on the display remained the same.
 
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