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Old March 2nd, 2014, 02:03 PM   #1
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BMPCC - Microphone Prototype


No Preamp, no battery. Only "PlugIn Power" from Pocket Camera.
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Old March 3rd, 2014, 03:10 AM   #2
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Re: BMPCC - Microphone Prototype

It's quite a nice video, but I didn't see the microphone anywhere in it. :-P

(sounds great through my Event 20/20 monitoring speakers)

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Old March 3rd, 2014, 03:28 AM   #3
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Re: BMPCC - Microphone Prototype



1x Headphones, 1x Microphone



Prototype Mic... all sounds with pocket "100%" Level.

Mic (Version 1.0):
- Non-directional Stereo
- 10-18.000 Hz
- S/N Ratio 82 dB (1 kHz)
- max. Sound Level 120 dB S.P.L.
- Sensitivity -30 dB (1 kHz)
- 990 ľA Current Consumption (9V - ab 2V)
- Impedance ca. 3 kOhm
- Windshield

Stereo Headphones:
- Perfectly closed System for Sound record
- System 40mm, Dynamic
- Frequency Range 10- 20.000Hz
- Impedance 32 Ohm
- max. Input power 500mW
- Sensitivity 105 db / 1 mW
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Old March 3rd, 2014, 07:23 AM   #4
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Re: BMPCC - Microphone Prototype

Interesting!

Just a thought: if the operator sneezes while recording .... it's going to be in stereo? :-)

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Old March 3rd, 2014, 07:32 AM   #5
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Re: BMPCC - Microphone Prototype

yes ;-)

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Old March 3rd, 2014, 09:46 AM   #6
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Re: BMPCC - Microphone Prototype

The Mouseketeers!!!
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Old March 3rd, 2014, 09:58 AM   #7
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Re: BMPCC - Microphone Prototype

The next prototype ;-)



Above: A two-horn system at Bolling Field, USA, in 1921. Acoustic radar.....
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Old March 4th, 2014, 05:55 AM   #8
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Re: BMPCC - Microphone Prototype

Hi Wolfgang,

I am a bit puzzled by your prototype pocket camera powered microphone as I did not think there was any power available from the BMPCC.

However I am impressed with the amount of detail and the shades of colour in your shots.

Were you using ProRes HQ or DNG and also what lens were you using?
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Old March 4th, 2014, 09:45 AM   #9
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Re: BMPCC - Microphone Prototype

The BMPCC has 2.47 V PlugIn Power, no problem...

demo filmed in Prores "Film", 24 fps, 800ASA, Shutter Angle180, (100 Euro Lens) Olympus M.Zuiko Digital 14-42mm F1:3,5-5,6 - sharpness + color in Premiere Pro CS6.
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Old March 4th, 2014, 10:12 AM   #10
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Re: BMPCC - Microphone Prototype



Prototype: Today testing the ultmativ windshield...

http://www.fxcinema.de/temp/wind.mp3 (windmachine with 3 m/s)

Left Channel with new windshield, right channel only pop-filter.


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Last edited by Wolfgang Winne; March 4th, 2014 at 11:29 AM.
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Old March 5th, 2014, 01:33 AM   #11
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Re: BMPCC - Microphone Prototype

Thanks Wolfgang,

Interesting, I have tested the same lens but was very disappointed with its sharpness and I returned it to my supplier. At that stage I did not add any sharpening which I am now trying with other lenses.
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Old March 5th, 2014, 02:25 AM   #12
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Re: BMPCC - Microphone Prototype

O.K. Metabones speedbooster with Nikon Lens are sharper....

here my Olympus digital M.ZUIKO 14-42mm 1:3.5 with BMPCC



pure sharpness with BMPCC/Speedbooster/Nikon 60mm

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Old March 6th, 2014, 12:11 AM   #13
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Re: BMPCC - Microphone Prototype

Hi and thanks again Wolfgang,

More contrast and a bit more definition with the Nikon, is it the 60mm Micro Nikkor? What should I think about the colour patterns?
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Old March 6th, 2014, 07:30 PM   #14
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Re: BMPCC - Microphone Prototype

I don't quite understand this topic, is it because you are going to try to sell the mic setup and are keeping what it all is a secret for now?

Anyways the sound sounds amazing to me so if you will ever share what it is and how to set it up please tell me as I would like to see how much all the pieces cost and if it is practical to build one myself, whatever it is that is.
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Old March 7th, 2014, 12:37 AM   #15
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Re: BMPCC - Microphone Prototype

Dylan,
I am guilty of taking this thread off topic but I have also wondered about its original purpose. In the absence of any other information it looks as though the headphone diaphragms are being used as microphones with their outputs being fed into the BMPCC mic input. This would explain the placement of the wind protection fur patches but not the power consumption.
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