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Johnny Castro43rd
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Noise Problems at 100 iso

Apr 10, 2013 10:42 PM

Hey im a rookie working editing a music video i shot.

From what I was taught about noise. It comes from high iso and underexposed images.

 

I shot in bright day light at 100 iso and footage has noise problems.

Heres the link to the vid im editing. Its at 17secs(look at the black jacket) and all the way thru.

 

http://www.youtube.com/watch?v=DJoRdqyE-70

 

Canon t4i with kit lens. 24fps, 50 shutter speed, Lightform c picture style

 
Replies
  • joe bloe premiere
    4,391 posts
    Dec 6, 2009
    Currently Being Moderated
    Apr 11, 2013 5:17 AM   in reply to Johnny Castro43rd

    I don't really see an inordinate amount of noise.

     

    I might suggest a bit of color grading TLC

    to give you a good 'look' throughout the cuts.

     
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    Apr 11, 2013 9:01 AM   in reply to Johnny Castro43rd

    I don't see any noise.

     
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  • joe bloe premiere
    4,391 posts
    Dec 6, 2009
    Currently Being Moderated
    Apr 11, 2013 9:18 AM   in reply to Johnny Castro43rd

    Or am I just being to picky here?

    I'd say yes.

    In fact, I'd be inclined to add a bit of 'grit' in the color grading.

     
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    Apr 11, 2013 9:10 AM   in reply to Johnny Castro43rd

    The only thing I'm seeing is that the focus is slightly soft on the driver, since your intended focus is the passenger.  (I was watching at 1080p.)

     
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    Apr 11, 2013 9:34 AM   in reply to Johnny Castro43rd

    It is neither noise nor pixelation. You cannot see any detail in the black fabric of the driver's jacket because it is out of focus - you focused on the passenger.  Ways to avoid it?  Increase the depth of field by using a smaller aperture?

     
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    Apr 11, 2013 10:56 AM   in reply to Johnny Castro43rd

    That's what I call "codec noise", sadly a known and hard (if possible) to avoid issue with canon VDSLR. Things that might help :

     

    - using an on camera "flat" color profile like flaat10.

    - lowering contrast, saturation and sharpening on this profile (the guy behing flaat10 provide good guidelines for his profiles).

    - disabling every picture processing options like "highlight priority".

    - staying away from the exposure zone were the issue is most visible, ie better plan your lighting and exposure. Being outdoor with a nice sun at 100 iso won't matter if you're shooting people standing in a shadow area with dark clothes. Keep in mind that with this kind of camera you have a very limited dynamic range to work with. Shadow + sunlight will give you nothing but overexposed highlights and muddy shadows.

    - not doing the post work in native H264 but rather transcode to something like DNxHD or ProRes (that was usefull with FCP7 and Color, I have no idea how Premiere handle this, never tested and probably never will).

    - not letting this drive you crazy. It's quite hard to see in your video and I probably only saw it because I knew what you were talking about before I even watched the video. It is highly improbable that most viewer will notice it.

     
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