Canon PowerShot S90
ƒ/2
6 mm
1/30
200

…with wide angle and manual focus rig for the zoom. A cool setup for documentary film recording.

Running in parallel, the wide-angle lens can record for much longer on a same-size memory card since less pixels change per second for the HD video compression algorithm.

10 responses to “Canon 5D Mark II x 2”

  1. I imagine they must have used a similar setup for the HDR video that PhotonQ recently referred to in one of the blogs. It was created with 2 Canon 5Ds.

  2. Interesting, it should be the opposite, when the lens is zoomed in there should be less detail in the frame. As in MPEG-2 even with Full HD compressed in the MXF*2 format the sensor massive data is sampled by the colors and data in the camera computing program, and according to how many different shades there is in the frame the camera is computing an image similar to the data that actually comes to the sensor. Surely there should be less sharp details and color in zoomed in image, as focal length is shorter, and therefore less data for the outcome file. If the camera is stable, surely not many pixels change and the opposite can be true.

  3. I assume that the key is that this works when the wide-angle shot contains a lot of static pixels while the close-up would make the active area fill much more of the screen. So it would work for a long shot of two people sitting in chairs talking to one another vs. a close-up on one face, but wouldn’t work for a tracking shot or a sky full of birds or whatever.

  4. I guess it depends on how much motion there is. The same panning speed is much less image motion in wide angle, and can be encoded with less bits.

  5. Hey, that’s Matt filming you for his documentary about the Singularity University! 🙂

  6. exactly. Matt and Judy swang by.

    I was thinking of the same logic as Bill.
    Obskura: He has both cameras on tripods. So the primary inter-frame motion is my talking head, and on wide angle, I take up a small part of the frame.

    j_silla: that may be true for a JPEG compression, but with MPEG, the inter-frame compression factors dominate the intra-frame.

  7. Nice to see the setup, I’m getting pretty close to shooting in a very similar style, wide and tight at the same time. For my purpose, I’m probably going to run a third 5DM2 off to the side for an alternate angle when needed. It is truly amazing what technology we have at our fingertips now compared to a few years back!

  8. I am sure you are right there, I only pretend to know something about technology. What is interesting to me about these cameras is that, they are advertised as full HD, yes they do give a pretty good image, 1 CCD, HD 720 frame sise en.wikipedia.org/wiki/File:UHDV.svg , H.264 compression; instead of 3 CCD, 1080 frame HD, motion jpeg compression. 7D as I understand is having some interesting h.264 compression 1080 frame, Surely this is not the real HD recording in RAW files with no compression, but most most consumers would not care to purge it enough to notice. Full HD in 10 MB / the same Real HD in 50 GB, who cares? Sure the differences are massive to filmmakers, but consumer is well confused between full and real HD.

  9. Where’s the super 8 camera? You’re image wouldn’t take up a lotta pixels on that format.

  10. Would someone please let me know how to contact this rig-maker 🙂 I am preping for a 3D reality tv series shoot, and need an inexpensive set up. Wonder how he adjusts the inner ocular, changing how much depth I have in the frame, and the convergence angle, meaning how far out of the frame the characters come or are pushed to the back. I mean how has he connected the cameras so he can change both parameters while he is shooting, and how does he line up the cameras without a unified monitor to view the endresult? Thanks a million, jaanus@quicksummer.com

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