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#apertus IRC Channel Logs

2016/11/08

Timezone: UTC


23:39
DGMurdockIII
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23:47
comradekingu
* back from mozfest (did mention the apertus to relevant people)
23:53
Bertl_oO
excellent!
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Spirit532
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05:12
Bertl_oO
off to bed now ... have a good one everyone!
05:12
Bertl_oO
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07:36
se6astian|away
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08:03
se6astian
good morning
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12:01
Bertl_zZ
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12:01
Bertl
morning folks!
12:36
kaiserlich
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13:44
comradekingu
heia
13:45
Bertl
hey
14:40
jucar
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15:16
comradekingu
i dreamt of filling the axiom beta up with non-conductive fluid for cooling
15:17
Bertl
go ahead
15:18
comradekingu
Im thinking sealing the hdmi ports will be the problem
15:18
Bertl
but you need to keep the fluid chilled as well
15:19
Bertl
there are watertight HDMI ports IIRC
15:20
Bertl
at least IPX7 should be available
15:21
jucar
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15:22
BogdanXor
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15:27
comradekingu
The fluid would eminate (?) heat via the body, and be transported around through convection, and possibly the fan
15:27
BogdanXor
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15:27
comradekingu
with the added benefit of having less/no noise
15:28
Bertl
well, that is probably a very bad idea
15:28
Bertl
there are parts in the Beta which can get very hot, like the FPGA
15:28
Bertl
and there are other parts you want to keep cool, like the sesnor
15:29
Bertl
having a medium connecting them will result in heat transfer between FPGA and sensor
15:29
Bertl
which will nicely cool the FPGA, but heat up the sensor
15:30
comradekingu
im thinking net benefits to cooling will lessen the effects of transfer
15:31
Bertl
a heat conducting medium does not cool per se, it just distributes heat evenly
15:31
BogdanXor
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15:31
comradekingu
That means more cooling if you can dissipate heat through the body instead of storing it locally
15:32
Bertl
it would be way simpler to simply connect the FPGA and maybe the power board to the body
15:32
Bertl
this way the hot parts would transfer the heat to the outside without too much affecting the cool parts
15:33
kaiserlich
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15:33
Bertl
you still need to get rid of the heat somehow
15:33
comradekingu
I live in Norway, works for me
15:34
comradekingu
i have an ample supply of -10 C going on
15:34
Bertl
excellent
15:36
comradekingu
seeing as the inside of the case isnt sheilded from heat-transfer, im thinking a direct heatpipe would be half an oven
15:36
comradekingu
Or that it would-re-circulate to a large degree around the contact point
15:37
comradekingu
That could be dealt with however
15:37
Bertl
if you want to go for passive cooling via the body, I would isolate the lens mount (maybe the entire front) from the rest of the body
15:38
Bertl
and connect the back to FPGA and power board
15:38
comradekingu
I would more probably screw a massive heatsink to the body, and heatpipe through the shell
15:38
Bertl
this way the sensor will stay pretty cool with -10C ambient and the rest of the camera will be nicely warm
15:39
comradekingu
I also thought of something (while awake) How about a system where you can dial in the focal ranges for stationary rolling shutter shots
15:40
Bertl
no idea what that means :)
15:40
comradekingu
So lets say you devide the picture into 5 parts, and set up the distances for each, it could then do that live when taking the image, getting everything in focus
15:41
comradekingu
So lets say im looking at something where the top end of the image is 500 meters away, and then the other parts are 400 200 100 and 0
15:42
Bertl
if you want everything in focus, just choose a small aperture :)
15:44
comradekingu
Yes, but i want the equivalent of turning while capturing
15:45
Bertl
would need to be quite fast I guess
15:46
comradekingu
However fast automatic lenses can keep up, i have only one, and that is 40+ years old
15:46
comradekingu
Lets say you just quickly drew a curve of what the distance was top to bottom in the image
15:47
comradekingu
Or the software interpollated between the set-points so it could get every line right
15:47
comradekingu
That would take right now, many many many images to do, and a whole lot of manual editing
15:48
comradekingu
Lets say you could also do it vertically, and you wouldnt need millions of pictures
15:48
Bertl
well, focus changes require mechanical movement and I doubt that this will work across the focal range within a frame
15:49
comradekingu
I was thinking it would work if the camera was stationary
16:05
se6astian
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BogdanXor
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kaiserlich
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17:43
Spirit532
comradekingu, if I read the scrollback correctly, you just want a motion controlled programmable AF puller that works via the lens interface, right?
17:43
Spirit532
motion control, rather.
17:43
Spirit532
curves and all.
17:47
Bertl
which is fast enough to pull the focus during a single frame
17:47
comradekingu
Spirit532: yes
17:47
Spirit532
impossible mechanically
17:47
Spirit532
period
17:47
Spirit532
ypi
17:47
comradekingu
I dont care how long it takes to shoot a single frame
17:47
Spirit532
not video?
17:47
comradekingu
stills
17:47
Spirit532
that's easy
17:47
comradekingu
I just want control of depth of field
17:47
Spirit532
just a bit of code, really
17:48
Spirit532
focus stacking?
17:48
comradekingu
if possible
17:48
Spirit532
yeah, that's easy
17:48
Spirit532
provided you know the interface, have the hardware already(connected to the ARM side of things, though FPGA via ARM would be ok too)
17:48
Spirit532
just a bit of software to sequence it, really
17:49
Bertl
if time is not important, it can be done via a shell script
17:49
Spirit532
shooo
17:49
Spirit532
you've got bare metal, run bare metal
17:49
Bertl
focus to 0, capture frame, step focus, capture frame, ...
17:49
Spirit532
yup
17:50
Spirit532
or just capture video at full res into RAM
17:50
Spirit532
and focus slowly
17:50
Spirit532
(but digitally, so it's smooth)
18:37
se6astian|away
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kaiserlich
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jucar
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21:00
Bertl
off for now ... bbl
21:00
Bertl
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21:40
se6astian
I am off to bed
21:40
se6astian
good night
21:40
se6astian
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