Thread: Speedbooster tests

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  1. #1 Speedbooster tests 
    Senior Member James Miller 72's Avatar
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    Attached are a couple of quick tests using an older E-EF speedbooster (not ultra as that bigger). Nearly fits without OLPF housing removed. (of course you have to be very careful here) - Just wanted to see if there would be enough room to fashion a dumb EF lens mount to this, will have to 3D print one. Shots are 'Whacked' so no mount and a bit of tilt and shift distortions to be assumed.

    Going by tests from Full Frame 35mm (Sony A7s) 5k now matches Full Frame 35mm. 6k is porthole of course. A 35mm at 4k is about a 50mm on full frame (single picture).

    Sometimes I really want higher frame rates at without so much crop, and extra speed is a nice touch.

    Custom OLPF (not shown) is tacked onto the front glass of the speedbooster although this has some IR cut I used a IR cut filter (52mm) on this Nikon 35mm Lens.
    To do. Create a housing for the speed booster modded version of OLPF option so we don't loose OLPF and IR cut. Create a lens mount to accommodate the new flange distance.

    Of course I would love metabones to do this, even if a custom low order amount was placed.
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  2. #2  
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    Cool test. I'm guessing the whacked/tilt-shifting is because nothing is machined (like you were holding it together by hand)?

    As much as I'd love for something like this to materialize, I'm starting to think it'd be simpler/easier/cheaper to just get a Sony/E-mount camera and a off-the-shelf speedbooster that literally clicks on/off the camera like a lens swap (rather than having to remove/replace the mount). Speaking of which, I'd love to compare an A7sII-FF35 4k frame to an A7sII-in-S35mode-with-Speedbooster 4k frame. They should have close FOV, but be 1stop brighter, and (most interesting) to see what happens to resolution and apparent sharpness.
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  3. #3  
    Really cool!

    As I understand it´s very tight to fit a speedboats onto the epic dragon, and I don't know about the space in the "sensor /olpf" cavity for weapon but I can only imagine RED made some extra room, and for sure the 8k version there of must have a lot more room.

    So why can not red make a speed boasted OLPF / large format kind of mount?

    for the 8k weapon that would be so cool. Extra light and massive field of view on long lenses.
    Björn Benckert
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  4. #4  
    Senior Member James Miller 72's Avatar
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    I now have adapted an old nikon mount, added a circular OLPF and have the speedbooster element set at the right distance to allow infinity. I don't have to whack it now. Will machine a housing tomorrow to stabilise the mount. Looking very nice though.
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  5. #5  
    Senior Member David W. Jones's Avatar
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    Great, keep us posted.
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  6. #6  
    Senior Member James Miller 72's Avatar
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    4k WS 10:1 with Cheap Nikon 35mm at F2. - Light fading fast here now.
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  7. #7  
    Senior Member Zeb B's Avatar
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    Cool concept
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  8. #8  
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    Yup, very cool test and concept!
    Maik Mueller || http://www.maikmueller.art
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  9. #9  
    Senior Member Mendes Nabil's Avatar
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    Can't wait to hear more about these tests, Raven definitely needs that! ;)
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  10. #10  
    Senior Member Nick Morrison's Avatar
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    Wow, James you just opened the door...keep us posted....proof that IT'S POSSIBLE!!!!!

    Very, very exciting...

    Thanks again for doing this!
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