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C/Y Sigma 28-70/2.8 Video Test

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  • C/Y Sigma 28-70/2.8 Video Test

    Bought cheapish zoom just for fun and had some time to test it tonight.
    I used the BMPCC in film mode and the BMPC4K in video since I was also comparing it to a Canon 24-105/4.
    The sun is almost set so its not exactly bright.



    Here is a quick test to compare sharpness, both are shoot in 4K Raw, f5.6, 5000K.
    I have opened both in ACR, left the white balance alone but pushed auto in basic settings. Then I have aded unsharp mask to half of he sigma image and saved them both as jpegs.

    Canon 24-105/4 L
    Canon241054Sharpness.jpg

    Sigma 28-70/2.8
    Sigma287028Sharpnessnounmask.jpg

    Sigma287028Sharpness.jpg
    Last edited by Nisse-Tuta; 08-23-2014, 04:57 AM.
    Youtube
    Videos, Tests, Tutorials, Reviews and so on : https://www.youtube.com/user/mattiasburling

  • #2
    Thoughts? Looks quite sharp to my eye. Always looking for zoom options for the BM4K, thanks for posting.

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    • #3
      Originally posted by jsolterbeck View Post
      Thoughts? Looks quite sharp to my eye. Always looking for zoom options for the BM4K, thanks for posting.
      Im a bit undecided. It looks ok, not as Sharp as the Canon but that is ten times more expensive if you buy it new.
      The 24-105 has been my goto lens for a long time but on the BMPC4K f4 is a bit slow so I need something else.
      If I start liking this lens I will keep it and get the 18-35 and a 70-200. Because lately I find myself shooting tele or kind of wide, rarley in between.
      Youtube
      Videos, Tests, Tutorials, Reviews and so on : https://www.youtube.com/user/mattiasburling

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      • #4
        The in-focus areas, if you can find them, look not sharp enough for downscaled 4K. The lens should actually be able to do that. Even my old Sigma 18-50 2.8 does!

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        • #5
          Originally posted by stier View Post
          The in-focus areas, if you can find them, look not sharp enough for downscaled 4K. The lens should actually be able to do that. Even my old Sigma 18-50 2.8 does!
          I can make a test comparing sharpness and upload stills because youtube really did a number on this one, but it will have to wait untill next week.
          Youtube
          Videos, Tests, Tutorials, Reviews and so on : https://www.youtube.com/user/mattiasburling

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          • #6
            I just updated my first post with a quick comparison in sharpness, sorry but I have no charts or anything so I just grabbed the first thing I saw.
            Youtube
            Videos, Tests, Tutorials, Reviews and so on : https://www.youtube.com/user/mattiasburling

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            • #7
              Speaking of sharpness I used the lens for this video,

              Youtube
              Videos, Tests, Tutorials, Reviews and so on : https://www.youtube.com/user/mattiasburling

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