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In Depth Look at SpeedBooster Bokeh

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  • In Depth Look at SpeedBooster Bokeh

    LINK: http://www.similaar.com/foto/lenstests/bokehtests.html
    My Official Blackmagic Micro Footage: https://vimeo.com/155747487

  • #2
    Those tests were on an APS-C sensor. In my experience, and I use the Speed Booster daily, the Speed Boosted on the BMCC is a great tool and it works fine on most of my lenses (tho I only use it on a few). Since the BMCC is a lot smaller than APS-C and even a little smaller than MFT the soft corners and funky bokah that appears on the edges barely come into play.

    The lenses I own are:
    11-16mm 2.8 Tokina
    17-50mm 2.8 Sigma
    20mm 3.5 Nikon
    28mm 2.8 Nikon
    35mm 2 Nikon
    50mm 1.4 Nikon
    85mm 1.8 Nikon
    105mm 2.5 Nikon
    135mm 2.8 Nikon

    You just need to use it with sharp glass, and only use it when you need to.

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    • #3
      Frank Glencairn posted a still and the blurred part of the image looked really odd. Do you find the out of focus areas look strange in your own footage?
      Paul Del Vecchio - Director/Producer
      http://www.PaulDV.net
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      • #4
        Originally posted by PaulDelVecchio View Post
        Frank Glencairn posted a still and the blurred part of the image looked really odd. Do you find the out of focus areas look strange in your own footage?
        A little on the edges on some lenses, but not strange enough to not use it for it's benifits. It's not all out of focus areas just along the out of focus edges.

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        • #5
          To be fair, Frank was using an older/vintage lens, correct? Seems like the Speedbooster has less artifacts on "clean"/sharp/new glass.

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          • #6
            My Nikon 85mm f1.8 looks amazing with it.

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            • #7
              Maybe it's just that 50mm Nikon at 1.4.
              I shot a lot with the booster lately (and was happy with the results), but I usually don't shoot wide open, so I can't say.
              Maybe I have some time on my hands tomorrow, than I look into it.
              Blog: http://frankglencairn.wordpress.com/

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              • #8
                I have a big test some friends and I are doing in a couple weeks testing the BMCC, and hopefully my BMPCC, along with a Red Scarlet, and a 5D3 shooting RAW. I'll make sure I put some Speed Booster tests in the mix as well attached to both the BMCC and BMPCC.

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                • #9
                  Originally posted by Frank Glencairn View Post
                  Maybe it's just that 50mm Nikon at 1.4.
                  I shot a lot with the booster lately (and was happy with the results), but I usually don't shoot wide open, so I can't say.
                  Maybe I have some time on my hands tomorrow, than I look into it.
                  Nobody should really be shooting wide open anyway unless you have no other option (lack of light) or it's a test of some kind. I personally try to be 2-3 stops from open.

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                  • #10
                    Originally posted by Brian@202020 View Post
                    Nobody should really be shooting wide open anyway unless you have no other option (lack of light) or it's a test of some kind. I personally try to be 2-3 stops from open.
                    There are several lenses designed to be shot wide open, manufacturers have clearly explained this several times. Slr Magic for example has stated that that their 35mm lens 1.4 and 0.95 are designed to be shot wide open and stopping them down does not improve any quality whatsoever and only lessens the depth of field.

                    Panasonic zoom lenses at 2.8 are also designed to be shot wide open as many others, so while yes for many lenses stopping them down can improve image I would not use a blanket statement like this for all lenses especially when the manufacturers themselves have stated otherwise.

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                    • #11
                      For me it's not about image quality - but my focus puller would...

                      and here comes your German saying for today:

                      "....jump with his arse into my face..."

                      ... if I ask for anything under 2.8, and even that can be quite hairy.
                      Blog: http://frankglencairn.wordpress.com/

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                      • #12
                        SLR Magic might say it doesn't improve the image when stopping down, but there are many examples online that state that it does. I haven't used them enough, so I don't know personally myself. If by "Panasonic zoom lenses at 2.8" you are referring to the 12-35, it definitely looks better at f4 than f2.8. This I know for a fact.

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                        • #13
                          I wouldn't be shooting wide open. On my Rokinons, I'd shoot lowest T2. I stay away from T1.5 cuz it's way too soft, smeary contrast, etc, so I'd be at T2 the widest but if it's a Speedbooster on a BMCC MFT, I'd most likely be shooting at T2.8 or higher because now I'd be working with a FOV of Super35 size.

                          I was just concerned with the image that you posted, Frank, because the blur and image quality seemed weird. If it's just the lens, then I'm willing to give the Speedbooster another look and consider it. I'd be using Rokinon, Leica and Zeiss lenses not wide open.
                          Paul Del Vecchio - Director/Producer
                          http://www.PaulDV.net
                          https://vimeo.com/channels/directorpauldv
                          http://www.youtube.com/user/pdelvecchio814
                          http://www.twitter.com/pauldv

                          https://www.facebook.com/pages/Paul-...io/58731646898

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                          • #14
                            Frank, was that image you posted shot ProRes or RAW?

                            Originally posted by Frank Glencairn View Post
                            Maybe it's just that 50mm Nikon at 1.4.
                            I shot a lot with the booster lately (and was happy with the results), but I usually don't shoot wide open, so I can't say.
                            Maybe I have some time on my hands tomorrow, than I look into it.
                            Paul Del Vecchio - Director/Producer
                            http://www.PaulDV.net
                            https://vimeo.com/channels/directorpauldv
                            http://www.youtube.com/user/pdelvecchio814
                            http://www.twitter.com/pauldv

                            https://www.facebook.com/pages/Paul-...io/58731646898

                            Comment


                            • #15
                              ProRes
                              Blog: http://frankglencairn.wordpress.com/

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