Announcement

Collapse
No announcement yet.

Brief thoughts and a bit of footage from the URSA Mini 4.6K

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #46
    Originally posted by Joe Giambrone View Post
    I see fixed pattern noise in the cloud shot at the end. Is that fixable? Is there some "black shading" or calibration function, like Red has?
    Hey Joe, are you referring to some light blobs on the left side? I actually had some smudges on my ND filter from rain, that I only noticed after the fact. So there are 2 consistent blobs tracking from the left side of frame as I pan.
    Test footage Vimeo page: https://vimeo.com/romanalaivi

    Comment


    • #47
      How did you use Canon FD lenses on a Canon EF mount??
      https://www.youtube.com/c/SoundSpeeding

      Comment


      • #48
        No clipping in this shot either - shot at 1080p ProRes 422 (not even HQ) at ISO 800 -

        NO noise reduction applied, it was exposed in the middle - some sharpening applied.

        You can see some CA from the Canon 24-105 lens I was using (at f5.6 if I recall correctly)

        So this has been downscaled from the full 4.6k sensor resolution to 1080p In camera.

        Tom Majerski
        Cinematographer / Photographer / CGI Artist / Filmmaker

        http://www.TetraGrade.com
        http://www.imdb.com/name/nm5157752/

        Comment


        • #49
          Wait raw is enabled right?
          www.lightformfilm.com
          https://vimeo.com/suwanchote

          follow me on instagram @lightformfilm

          Comment


          • #50
            Originally posted by Note Suwanchote View Post
            Wait raw is enabled right?
            Yes
            Tom Majerski
            Cinematographer / Photographer / CGI Artist / Filmmaker

            http://www.TetraGrade.com
            http://www.imdb.com/name/nm5157752/

            Comment


            • #51
              If you forgive the bad white balancing here - have a look at the difference between Raw Lossless (10.5MB per frame) compared to 3:1 Lossy (4MB per frame)

              The fabric backdrop has that pattern on it, its not moire.

              I didnt label which was which before - and I cannot remember now.

              I remember pixel peeping at 300% in the shadows and could see a slight difference in the 3:1, less detail - but only but a tiny amount, and it was so close to 0% anyway then its hardly much a of a loss.

              Tom Majerski
              Cinematographer / Photographer / CGI Artist / Filmmaker

              http://www.TetraGrade.com
              http://www.imdb.com/name/nm5157752/

              Comment


              • #52
                Originally posted by Tom View Post
                have a look at the difference between Raw Lossless (10.5MB per frame) compared to 3:1 Lossy (4MB per frame)
                Is 4:1 enabled, and if so, how does it look compared to 3:1 and ProRes?

                Comment


                • #53
                  In Kholi's first clip, in the UHD file, there's quite some color moire in the chairs at the right. The camera could really benefit from a light OLPF like the ones from Mosaic. Any idea if that's in the works by them?
                  Álex Montoya on IMDB
                  https://www.imdb.com/name/nm0600257/

                  Comment


                  • #54
                    No moire here, Fauxto, check your video scaling option, I'm pretty sure that the source footage is moire free.

                    Comment


                    • #55
                      Originally posted by Max Minoia View Post
                      No moire here, Fauxto, check your video scaling option, I'm pretty sure that the source footage is moire free.

                      Nah, the be fair - if you look at the footage at 100%, there is a tiny bit of it just before they walk past it.

                      If you guys remember how the 4k cam also didnt have a OLPF and because of its higher res - moire was naturally less common, this time its even less common due to the 4.6k res.

                      I suspect (although have not tested for it) that any downscaled ProRes format (rather than raw) will maybe show moire a bit more, because of the internal scaling - but time will tell.
                      Tom Majerski
                      Cinematographer / Photographer / CGI Artist / Filmmaker

                      http://www.TetraGrade.com
                      http://www.imdb.com/name/nm5157752/

                      Comment


                      • #56
                        Thanks for posting this guys. Looks amazing!!
                        http://www.thedreamers.nl/en

                        Comment


                        • #57
                          Definitely the spiritual successor in looks to the 2.5k by the looks of things, which I'm chuffed about. Cheers for sharing guys.

                          Comment


                          • #58
                            Yeah, the problem is downscaling, though minimal at the start, it usuallly gets worse when you downscale. I was wondering if there's some algorithm that minimizes it.
                            Álex Montoya on IMDB
                            https://www.imdb.com/name/nm0600257/

                            Comment


                            • #59
                              Originally posted by Roman
                              The new Film log is something else. Gone are the days of needing a LUT just to "correct" your footage in order to get it where it needs to be. There's enough contrast / saturation built into the log to get your images looking right in just 1 or 2 nodes.
                              Originally posted by Tom
                              One of the things I am most excited about is the new film profile. It makes getting good and accurate images only couple of clicks away. Seriously, add a bit of contrast and you're there.
                              Does this mean that the film log curve is centered around middle gray and that the color space aligns primaries with the primaries of rec709?

                              I am not sure I get what does "There's enough contrast / saturation built into the log" actually mean. Surely a flexible log-ish image would have (very) low contrast.
                              Shutter Angle: The science and magic of shooting moving pictures

                              Comment


                              • #60
                                Originally posted by cpc View Post
                                Does this mean that the film log curve is centered around middle gray and that the color space aligns primaries with the primaries of rec709?

                                I am not sure I get what does "There's enough contrast / saturation built into the log" actually mean. Surely a flexible log-ish image would have (very) low contrast.

                                The contrast is more like with the Alexa, how the mid tones are brighter - I wouldn't say that the Contrast is built in - but the saturation is richer than before and the hue is pretty much bang on. Previously if you added some contrast and saturation with the old BMDFILM profile - you needed to do secondary tweaks to get natural colour and nice mid tones. Now, if you slighty increase the saturation and add a moderate amount of contrast (even just using the contrast value rather than curves) - you end up with an accurate, good looking image. Getting the footage to that perfect starting point is very easy.

                                I know a lot of people found the grading workflow to be a difficult learning curve with the previous cameras - this time, it is much much easier to deal with without compromising the flexibility of the image.
                                Tom Majerski
                                Cinematographer / Photographer / CGI Artist / Filmmaker

                                http://www.TetraGrade.com
                                http://www.imdb.com/name/nm5157752/

                                Comment

                                Working...
                                X