Jump to content

Search the Community

Showing results for tags 'Noise'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Cinematography Forums
    • General Discussion
    • Cine Marketplace
    • Cameras Systems and Formats
    • Lighting for Film & Video
    • Camera Operating & Gear
    • Camera Assistant / DIT & Gear
    • Grip & Rigging
    • Visual Effects Cinematography
    • Post Production
    • Students, New Filmmakers, Film Schools and Programs
    • Lenses & Lens Accessories
    • Film Stocks & Processing
    • Books for the Cinematographer
    • Cinematographers
    • Directors and Directing
    • In Production / Behind the Scenes
    • On Screen / Reviews & Observations
    • Business Practices & Producing
    • Camera & Lighting Equipment Resources
    • Jobs, Resumes, and Reels
    • Please Critique My Work
    • Cinematography News
    • Sound
    • Off Topic
    • Accessories (Deprecated SubForum)
    • Regional Cinematography Groups

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start





My Gear


Found 15 results

  1. I have read ARRI's whitepaper on dynamic range and how the EI is used to assign which signal value we want to choose as middle grey, which ultimately allows us to control the exposure latitude around middle grey. I've also read that the way ARRI does this is by only allowing us to shoot at its native ISO 800 (or maybe as some say its 400) and that changing the EI is like adding an exposure LUT on our image. This would make sense to me, because it would explain how the dynamic range (SNR=1 to full well capacity) is able to stay constant at different EI, because it doesn't operate by increasing the gain of the signal. (It would also explain why its they use the nomenclature EI) Nevertheless, I would like to know how they do this and if what I have read is correct?
  2. Hey, I'm working with some drone (A2s) files and I can se the footage quickly "popping up" every second or so. At first I tought it was due to the arm's leds, but that's not it. I think this may be due to compression. What do you think? I'd love to hear some advice on to handle it. Sometimes it's nothing, sometimes it's really noticeble. i-frame noise reduction? - is this a thing? haha Thanks! Obs: not a colorist, as u can see
  3. While using the Sony fx9 using slog3 in a low light scene using Iso 4000 I have found a lot of noise and I was also using T2, why is this happening, is there any solution to it?
  4. While shooting a night scene in slog3 why we should shoot it 1 stop over at 12800 ISO, so as to have low noise, but if we raise the Iso from 800 to 12800 doesn't that increases the noise ? I am confused please help me, I want to use slog3 for night shoot without having noise so that I have full opportunity for color grading.
  5. Hello, all of a sudden today arricam st 4 perf started making this noise - vimeo link attached. Noise comes and goes regardless of magazine being attached to the camera. Noise can appear in a middle of a take and then go away in 30-40 seconds, then come back again. Film transport and shutter seems fine visually and the camera doesn't give any warnings. Nothing was done to the camera yesterday to give us a clue of the cause, except for regular daily cleaning with air. All tests prior to the shoot are totally fine. Negative was examined throughout the day and has no scratches. Noise intensifies significantly when fps changed to 60. When fps slowed down - sound disappears. Tried adjusting pitch but to no result. Anyone came across the same issue? https://vimeo.com/361685396 PASSWORD: noise Best
  6. Hello, I have a couple projects coming up where I will be shooting in dark environments. One is a TVC of people against a dark gradient background and the other is a short film of night exteriors and interiors. I recently noticed some noise in the blacks when shooting with the Alexa Mini at 800 iso. Has anyone else found this? Are people rating this camera lower when shooting in dark settings to raise the shadow detail. I’ve always done this with Sony but didn’t think it was necessary with Alexa as well. Thanks for you help Michael
  7. Hi, I had an opportunity to shoot a body builder for a short documentary/story. This was a guerilla and i was just packing 2 - 1x1 leds. I wanted to underexpose the shots to get that cut light to shape the muscles. The shots picked up a lot of grain in shadows losing detail This was shot with cine4 gamma black gamma range wide level +4 black level +2 color mode pro shot at 200-400 iso with canon 16-35 and 24-70mm on HFR mode. The editor was like these shots cannot be used. https://ibb.co/dTb5v9 https://ibb.co/h5ab2p https://ibb.co/fRpfTU https://ibb.co/h7C0TU https://ibb.co/cbBuoU https://ibb.co/jeAXa9 https://ibb.co/fvo2a9 https://ibb.co/iV5ha9 Do I need to expose the image normally and then bring it down in post? What am I doing wrong ? What do i Do if I have to underexpose properly in future.
  8. I'm a student who is about to shoot a 5min 35mm short. The final look we are going for is one with very minimal grain and no noise. This 5207 test video shot by Kodak is a good example of what we are looking for.    https://www.youtube.com/watch?v=qCxr7YeD0C4   The key thing here is minimal grain and noise. I've been looking into various post houses and the equipment they have and came up with this list:    Fotokem - Spirit  Metro Post - Director Gamma Ray Digital - ScanStation Cinelab - Xena Nolo Digital - Arriscan FilmVideoSolutions - Spirit    I'm not too sure where to go from here. Whats the typical workflow in order to achieve a noise free and (almost) grain free result? Will data scanning instead of telecine help? Is there any post house that is recommended for this sort of thing? And do any of these post houses offer grain management/reduction that can help us achieve the look of that kodak test video?   The scans I've seen from Fotokem seem quite nice in terms of grain and noise but I haven't seen too many examples from others.   https://vimeo.com/174719862   I plan on overexposing by at least a stop to tighten grain but is there any 3rd party software that can help with grain and noise management/reduction after scanning?    Any help is appreciated! 
  9. Hey guys, I wanted to see if I could get some opinions and perhaps guidance. I have recently switched over from Epic to Alexa. I am loving the camera but noticing that when using the built in LUTs, the image puts so much of its DR toward protecting highlights and thus has a little more noise than i might like in some scenarios. I have read a lot about shooting 400 ISO and from what I can tell it costs about a stop overall. That said, I have been doing some tests where I am exposing hotter than my waveform would suggest (monitoring in rec 709 and commercial) but without clipping in LOG. I find that once corrected the highlights usually still look amazing but the noise is much more like what i am looking for. I am wondering if there is a way to take the ARRI rec 709 lut down a stop and load it into the camera so that I will naturally expose a bit thicker of an image with cleaner shadows, without gaining down to 400. Of course, also open to opinions on why this might be a flawed idea, or whether it is essentially the same thing as shooting 400 haha. I just find my taste leans toward less noise in mid and shadows, and with the alexa image holding highlights so nicely, i'd prefer to "expose to the right" a bit more without having my images coming in so hot in premiere when the LUT is applied. Any thoughts/suggestions? Thanks, Steve
  10. Hello, My names Trevor, I've been getting super into film over the past few years and am by no means an expert in the slightest. I got my first camera a few months ago (Nikon D3300), and I know all about settings, set-up, etc, I run on manual. Anyway I've been doing more and more test videos in different situations and no matter where I am no matter how low the ISO is, the shot always seems to have a TON of noise and be very dark. I put a sample shot below. Camera: Nikon D3300 Lens: Kit 18-55mm Settings: 800 ISO f. 3.5 Any help/advice is extremely appreciated! (Don't know if it's me or the camera but I feel really held back by the quality I'm getting.) Yes I know its very out of focus, wasn't bothering with focusing.
  11. Hey everyone, Recently I shot a student film with 16mm Kodak 200t 7213 stock. It recently came back from telecine and it looks much more grainy than the footage I've seen previously online of 7213 or even 7219. A Spirit Data cine was used for the transfer and I got the footage as HD pro res 4:2:2. We rated the film at 200 and underexposed -1 stop. My question is, is this the noise from the telecine or is it just 16mm grain? I attached some screenshots below. Thanks in advance Best Regards Yunus
  12. Paul Tackett

    Red Iso

    There have been several posts about ISO but I have not found this specific question. On Red's website they state: "For most scenes and uses, exposing with an ISO of 640-2000 strikes the best balance between highlight protection and low image noise." I have found that shooting at 800 on the Red Epic MX with the Redcode at 8:1, the image has a significant amount of noise in a dark scene. So, I'm wondering, does changing the ISO to 640 or 500 really make much of difference in the noise level of darker scenes? I'm talking about an image where there is no need to lift the blacks.
  13. I just watched this video and tought about the story on Kubrick and the candlelit scenes on "Barry Lyndon". What would he be doing with today's cameras and lenses? Of course cinematographers aren't using f0.7 lenses on day to day basis but, for example, Master Primes and Cooke 5 are pretty bright and camera ISO technology are advancing everyday. With a camera capable of a base ISO 5000 and a Master Prime on T1.3 candlelit scenes would be just the start on the cinematography crative process. What do you think?
  14. Hello everybody, Has anyone of you made a comparative test between Alexa and Amira under the same conditions? According to Tech Specs, both cameras have exactly the same sensor. But is it possible to tell the difference between the two cameras, assuming they are using the same codec and ISO settings, the same lens and t-stop and the same lighting conditions? I´m looking forward to hear your opinions and experiences about this. Thanks, Matteo
  15. Hey Everybody, Ever wondered how to professionally remove unwanted video noise from your videos? Check this tutorial: Thanks for watching and please subscribe. Cheerz, Ruan Lotter Youtube: www.youtube.com/tunnelviziontv Twitter: www.twitter.com/ruanlotter
  • Create New...