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Bolex RX5 timelapse + Tobin TTL motor


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#1 Arnis Hagendorfs

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Posted 08 November 2008 - 05:39 PM

Hello!

Just got from telecine my second roll of timelapse movies I'm filming with Bolex RX5 and Tobin timelapse motor. It is my second first one was overexposed as I did not read manuals :). Picture looks ok I mean grain and color, first one started to grow out of focus, only thing which you can notice is that picture is not stable. So, here is question: Is it possible to adjust camera to get stable picture and if yes who here in Europe can do it well and not too expensive :)

here is link:


Arnis
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#2 Ira Ratner

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Posted 08 November 2008 - 06:09 PM

Hey--that is amazing stuff. But it's simply out of focus.

What speed film did you use? And the lens? And the F-stop?

Also, did you mount the camera on reliable tripod?

I don't really think the tripod has anything to do with it, but the focus/aperture sure does. For this kind of stuff, you have to be shooting at F16 for a minimum.
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#3 Simon Wyss

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Posted 09 November 2008 - 07:29 AM

Beautiful. The camera belongs onto sturdy sticks, I mean a really stable tripod with a good head. You can't go too rugged. Maybe you wish to introduce an additional light like a sunbeam . . .
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#4 Ira Ratner

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Posted 09 November 2008 - 08:33 AM

Hey Arnis:

I just saw your clip at the park doing turbo mode. That was Flushing Meadows, right? Or is there a Unisphere like that somewhere else?
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#5 Arnis Hagendorfs

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Posted 09 November 2008 - 12:32 PM

I used Vision 3 500T film with ND 0.9 filter, and exposure was around 8.0 and Switar 25mm lenses. Last scene is 25mm + 5mm macro ring. i don't think that problem is in tripod I used old Bolex aluminum tripod which seems very stable. Quality at youtube is not very good but out of focus is only first scene others are good.

That was Flushing Meadows, right? Or is there a Unisphere like that somewhere else?

Sorry I don't understand what you mean, but first two plants was beans and the last one - clover.
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#6 Arnis Hagendorfs

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Posted 10 November 2008 - 09:08 AM

Hi again,

anyone know something about problem with unstable Bolex frame ?
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#7 Herb Montes

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Posted 10 November 2008 - 01:47 PM

Hi again,

anyone know something about problem with unstable Bolex frame ?


I tend to find Bolexes rather stable even in single frame mode. Project the film with the frameline showing. If it breathes then it is something with the camera. Other factors could be in the film transfer to video.
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#8 Anthony Schilling

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Posted 22 November 2008 - 12:41 PM

I used Vision 3 500T film with ND 0.9 filter, and exposure was around 8.0 and Switar 25mm lenses. Last scene is 25mm + 5mm macro ring. i don't think that problem is in tripod I used old Bolex aluminum tripod which seems very stable. Quality at youtube is not very good but out of focus is only first scene others are good.

That was Flushing Meadows, right? Or is there a Unisphere like that somewhere else?

Sorry I don't understand what you mean, but first two plants was beans and the last one - clover.


With the TTL, the exposures are almost 1/2 second, so you need about 5 stops of ND. Unless you were metering an f4 and used f8, theres your overexposure.
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