Jump to content
Sign in to follow this  
deanaladay

A7RII 4K Video - Urgent noise / banding problem?

Recommended Posts

Hi guys,

I[ve got a brand new A7RII, and have been using it mainly for photography,

As far as I can see, all firmware is the latest, and it is being used in pairing with a Sony Zeiss 24-70 f/4 lens.

Today I had a video shoot for a client, however when inspecting the footage, I've seen that a LOT of the clips are covered in weird vertical noise patterns, lines, or something - I really have no idea what they are.

I have no idea at all how to fix this and what is causing it, please, please can anyone help out?

This is not happening to any clips shot at any other resolution than 4K.

Please, does anyone have any ideas as to what this is and how to fix it?

Please see attached picture!

post-7914-0-42831000-1450735675_thumb.jpg

Share this post


Link to post
Share on other sites

I was initially going to ask for your camera setting such as iso etc, but then decided there was little point. That pattern does not seem to display any characteristics I'd associate with settings or noise.

 

On the affected clips, does the pattern show itself on the LCD screen when recording? Does it show it on the LCD screen when playing back the clip on camera? If yes, I would say one of 2 things. Firstly, were you just shooting in camera? Did you have any other gear, lighting wireless equipment nearby? Looks like some sort of interference pattern. Second, when ruling this out, it is a possible camera fault.

 

If it doesn't show this pattern in camera, only after import to a PC/mac, it could be a codec issue or PC problem. Try the footage on another computer.

 

My thoughts are just a bit of logic - I don't claim to really know a solution. Hope you get it sorted. Being a new camera you always have an exchange at hand.

Share this post


Link to post
Share on other sites

Can you upload a short clip exhibiting this problem? I agree with pilsburypie that this looks more like a codec issue than something on the camera side. Can't say for sure without an original video file though.

Share this post


Link to post
Share on other sites

Hi guys,

....

Today I had a video shoot for a client, however when inspecting the footage, I've seen that a LOT of the clips are covered in weird vertical noise patterns, lines, or something - I really have no idea what they are.

I have no idea at all how to fix this and what is causing it, please, please can anyone help out?

This is not happening to any clips shot at any other resolution than 4K....

 

There are 60 vertical bands on the image. That makes me wonder about issues related to 60Hz AC power, esp. lighting. However the repetition frequency on the screen is much higher than 60Hz. As pilsburypie said it looks like radio frequency interference. It would help if we could see a clip.

 

Was the lighting electronically dimmable? Oftentimes lighting controllers will use PWM (pulse width modulation) which is invisible to the eye but can appear on certain specific frame rates and shutter speeds.

 

What lighting was in use, and what shutter speed you use? Was shutter speed manually controlled or was it automatic? Usually lighting-related issues show up as horizontal banding, not vertical, but we must gather all the info you have and ponder it.

 

Were you using full-frame 4K or Super35 4K? Did you happen to try both and did it appear only with one? The sensor is scanned differently with each 4K mode so this could tell us something.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

  • Similar Content

    • By Blackadder
      Good afternoon,
      I got my Sony Alpha 7RII a couple months ago and all was going perfect until this "famous" camera error appeared randomly while i was shooting around.
      The "Camera Error, Turn off camera then on".
      I tried to turn it down and give it a small hit and it got fixed, but couple days after that it appeared again, and there's no way for me to fix it again.
      My camera is still in warranty, but i've seen a lot of people complaining about this problem and most of them still had this problem  when the camera was already "fixed" by Sony.
      Is it worth to try to fix it by warranty (like my piece is wrong and they can put me a right one), or is it just a Sony problem and this will hit me up again in 2-3-8 months?
       
      Thanks in advance.
    • By csmelzer
      Can anyone give me insight as to what might be going on here? It's happening across multiple lenses soIi'm thinking its a sensor issue...

    • By kalforever
      Hi everyone!
      I just acquired a couple of months ago the Sony a6000 to start into serious photography (I used to shoot IPhone and even if I love it, I've always looked for better and true stunning  photos), I paired it with the Sigma 16mm F1.4 and love the versatility and the results especially the image quality. I've used primarily as an all-round, travel, every day photography even environmental portraits in low light.
      I'm very excited since just received the A7III in addition to start in the FF world and I'm just trying to decide the first lens should I buy for, after reading and watching a lot of reviews I narrowed my search to the following candidates:
      Sony 24-105mm F4 G, very useful focal length range and super sharp, F4 aperture may be compensated by increasing ISO in low light situations. Tamron 28-75mm F2.8, standard zoom lens for landscape, portrait and street photography, the F2.8 and apparently good sharpness is something really gets me. Sony Zeiss 50mm F1.4 / 55mm F1.8 standard primes, the overall performance and good perks of the 55mm are great, but the reviews about the stunning pop ("like magic") of the 50mm image quality really wants me to incline for this lens, is that really good? Sony 24mm F1.4 G Master, in pre-order right now but I really expect an excellent performance and to be a go-to for landscape photography and overkill the previous experience with the Sigma 16mm 1.4 (APS-C). I can just afford 1 lens this year (I won't be buying another lens even after savings) and don't mind to be walking in or out to get the perfect composition, I just want to get the best experience and image quality and start building my lens kit after time.
      Thank you for the feedback!
    • By koraydansevgilerle
      Sony A7 S2 Time Lapse Video
      https://youtu.be/ciQbHq0RbbY
       
       
    • By LukeAyers
      Hi everyone,
      Have a look at this film I released several months ago, shot with the amazing A7RII.
       
      Best,
      Luke
×