Current Server Time: 21:38 (Central Europe)

#apertus IRC Channel Logs

2016/04/24

Timezone: UTC


00:14
Bertl
off to bed now ... have a good one everyone!
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Bertl
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09:49
Bertl_zZ
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09:49
Bertl
morning folks!
09:52
Alex_Chooks
Hi !
09:56
Bertl
hey Alex_Chooks! Who is Guillaume_Chooks?
10:09
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10:10
Guillaume_Chooks
Hi Bertl ! we are brothers ! If one of us is not here you can ask something to the other one !
10:11
Bertl
Great! I suspected something like that! Welcome!
10:15
Guillaume_Chooks
yeah you speack with me few month ago for fist 3d print part, my brother come after relaxiom campaign, and he is very contamined now :-D
10:16
Bertl
hehe
10:21
Guillaume_Chooks
we think about have contact and create something with french community. Maybe to meet on maker faire, to present the camera etc... But we can't have contact directly on the ecosystem!
10:23
Bertl
best coordinate with se6astian when he is around
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12:07
se6astian|away
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12:12
se6astian
Alex_Chooks: Makerfaire or local event sounds great
12:12
se6astian
let me know when it is and what you had in mind
12:12
se6astian
posters, flyers, cards, camera to demo, etc.
12:14
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12:19
Guillaume_Chooks
It could be great to have some posters or a kit for demo on events. But it could be great to have a technical guys that know perfectly every thing one the beta !
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12:20
Guillaume_Chooks
After we can join our forces and if we are a little team, with 3d print developpers, software etc... it can show to everybody the power of the concept !
12:22
se6astian
sounds like a plan
12:22
se6astian
when would there be such an event?
12:25
se6astian
the most considerate discussion about us on reddit so far: https://www.reddit.com/r/Filmmakers/comments/4g7pox/id_like_to_discuss_with_you_the_apertus_project/
12:27
Guillaume_Chooks
the next big maker faire is next week in paris so too late for me to organize something. Maybe we can start to contact all french guys and try to planning an event for the end of the summer when some beta will be here ?
12:34
se6astian
sounds good
12:34
se6astian
please email to fr [at] apertus.org
12:37
Guillaume_Chooks
ok great !
13:02
se6astian
that reaches 3 french speaking people in belgian
13:02
se6astian
*belgium
13:03
se6astian
but I guess it would make sense to contact the other french backers/community as well
13:03
se6astian
maybe a separate mailing list?
13:03
se6astian
for the future
13:03
se6astian
ok gotta go
13:03
se6astian
bbl
13:03
se6astian
changed nick to: se6astian|away
13:17
Guillaume_Chooks
yeah we can have a french language community, with belgium guys , switzerland etc... if every french guys are in contact directly it will be more easy to planning something i think
14:21
Bertl
off for a nap ... bbl
14:21
Bertl
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se6astian|away
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16:01
Bertl_zZ
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16:01
Bertl
back now ...
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17:25
rgon
Hi all. I would like to share a post on the blackmagic forums regarding image noise. I have previously read TEC cooling an image sensor just reduces dark current noise, which is useful on very slow shutter speeds especially for astrophotography. However, I have found this user which took a BMPC4k (same CMV12000 sensor as the A° Axiom Beta). The improvements are jaw-dropping.
17:25
rgon
This is the link: https://forum.blackmagicdesign.com/viewtopic.php?f=2&t=29701
17:25
Bertl
great! thanks!
17:26
rgon
At 3°C the noise at 800ISO (+3 F Stops) is almost gone. Don't forget all the pictures have been pushed up 3 stops
17:27
Bertl
we have a SFE which doesn't use the ZIF socket and thus allows for easy cooling of the sensor from the back
17:28
Bertl
so there are a number of options to test/investigate that with the Axiom
17:30
rgon
Wow cool! It would be great to see a better study on that!
17:31
Bertl
find somebody with an Axiom Beta and make your case
17:31
se6astian
I just had a look at the forum thread
17:32
se6astian
to me it is not clear how the temperature was measured
17:32
se6astian
does BM provide the sensor temperature somehow?
17:34
Bertl
I think it was just the environment
17:34
se6astian
well then those results can be anything honestly :)
17:35
Bertl
sure, but it is unlikely that they have heavy noise in the FPGA or other circuitry
17:36
Bertl
so, despite this not being scientifically, it suggests an impressive correlation between noise and temperature
17:36
Bertl
(which of course needs to be verified, it is just a single example)
17:36
se6astian
agreed
17:37
se6astian
luckily we can measure the sensor temperature on the Beta in several places and quite accurately :)
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19:40
rgon
Hey, I have just found another user which cooled his BMCC (not the 4k one unfortunately) with a peltier device. He cools the camera's aluminium casing (which is thermally coupled rather badly to the sensor) for 20 minutes before a shot. The forum thread has nice and detailed information. Here it is: https://forum.blackmagicdesign.com/viewtopic.php?f=2&t=24688
19:41
rgon
Hey, I have just found another user which cooled his BMCC (not the 4k one unfortunately) with a peltier device. He cools the camera's aluminium casing (which is thermally coupled rather badly to the sensor) for 20 minutes before a shot. The forum thread has nice and detailed information. Here it is: https://forum.blackmagicdesign.com/viewtopic.php?f=2&t=24688
19:42
rgon
Whoops I'm sorry I have sent the first message twice
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20:03
Bertl
rgon: no problem
20:06
rgon
It seems that part of my message wasn't sent (the blame is on my IRC client), it doesn't appear on the log. Sorry for the inconvenience. The guy was able to push the camera's Raw video up to 12.800ASA!!! A bit of noise reduction and the footage is usable. For those who haven't got much time, he posted a video here: https://vimeo.com/83725166/ (password: lowlight)
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21:36
se6astian
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22:39
Bertl
off to bed now ... have a good one!
22:40
Bertl
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Spirit532
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23:04
Spirit532
Hi everyone.
23:06
Spirit532
I'm currently working on a much, MUCH cheaper and lower-spec camera based on the microzed 7010 and the CMV2k sensor, so I thought I'd join
23:07
Spirit532
I'm far from an expert on high speed digital design, but as my requirements are a lot less strict, I figured I'd be able to do it. The only real issue right now is HDL, because I really suck at it, and I haven't actually done any real projects with FPGAs.
23:08
Spirit532
People have told me that I have to take this slow and learn the basics first, but I've learned C/C++ by dismantling kernel drivers and hacking games, skipping all the hello worlds and such.
23:09
Spirit532
However, I encountered the most hilarious, stupid problem - the microzed is not in stock ANYWHERE except some random supplier from Shenzhen for over $300(7010)
23:10
Spirit532
So I'm somewhat stuck at the moment, as the CMV2000 and the Microzed 7010 are the only components that are rather hard to acquire, though the sensor is on Mouser, which I think do ship to Belarus(which is where I am).
23:11
Spirit532
As you guys have done a massive amount of work already, albeit with a much better sensor(that I can't dream of affording), is there anything I should wach out for?
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