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#apertus IRC Channel Logs

2023/03/30

Timezone: UTC


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14:55
polyrhythm
anuejn: ...are we looking at the same DNG?
14:55
polyrhythm
when I open it in darktable I get a black image and "Unsupported profile replaced with linear Rec 709"
14:56
polyrhythm
other programs just refuse to open it at all
14:57
polyrhythm
darktable does kind of open it in the sense that you'll see some purple-y weird thing in the "light table" view, but if you go to develop the image in the darkroom, it's just nonsense data
14:58
polyrhythm
just to double check i re-downloaded the DNG above and confirmed this behavior
14:58
anuejn
waaaaaat
14:58
polyrhythm
so there's definitely something screwy with the metadata, and some apps just can kind of roll with it and at least sort of load it
14:59
anuejn
jup that is true
14:59
polyrhythm
profile software (lumariver) straight up refuses to load it. as does adobe DNG converter
14:59
anuejn
it is also more screwed than my dngs
14:59
polyrhythm
well your DNGs just load garbled noise for me haha
14:59
anuejn
since this one I cannot convert with the adobe DNG convertar
14:59
polyrhythm
right
15:00
anuejn
do mine load in adobe dng converter for you?
15:00
polyrhythm
yeah they do
15:00
polyrhythm
the data is just nonsensical because of the float thing or whatever, but structurally it seems ok
15:02
anuejn
okay
15:02
anuejn
I see what is wrong with your dng
15:02
anuejn
it is lacking the color profile
15:03
polyrhythm
yeah that appears to be it given the darktable complaint
15:03
anuejn
did you just bake the dngs with an empty color profile
15:03
polyrhythm
i guess, I used the base_idf or whatever yml file
15:03
polyrhythm
i believe with the other yml file, I remember getting the garbled data? i don't remember why i used base
15:03
anuejn
(this is the metadata diff: https://www.diffchecker.com/tpjOcNT2/)
15:04
anuejn
ah base_ifd is the wrong one
15:04
polyrhythm
okay
15:04
polyrhythm
I'll try this flow again with either the included yml or at least hand-make one that has some pass-through matrices
15:04
anuejn
as it contains the tags that are written anyway
15:04
anuejn
sounds good
15:05
anuejn
it should contain the tags from default_dcp.yml
15:05
polyrhythm
got it
15:07
polyrhythm
maybe random question for se6astian but what's the deal with the e-mount lens decision?
15:07
polyrhythm
it's a completely whack idea from a cinema perspective since it's got a screwy flange distance for adapting any legitimate glass.
15:07
polyrhythm
standard should be PL...
15:08
polyrhythm
assuming our target audience includes film people, anyway
15:09
polyrhythm
I have a P+S Technik lens mount on one of my cinema cameras which is really nice. it is modular and can take PL, C, EF, and others
15:12
se6astian
we chose emount because we need a short FFD bayonet so any other mount standard can be easily adapted mechanically, MFT was too small for APSC projection circle
15:13
se6astian
we also considered P+S but since that always requires an adapter did not seem practical to us
15:13
polyrhythm
in practice for film people, the adapter is a trivial thing practically-speaking, but i see your reasoning regarding the bayonet
15:14
polyrhythm
i guess i am just myopically am considering the film case. i would want a straightforward plug and play for PL
15:14
se6astian
what do you mean with " screwy flange distance" ? no locking part like PL mount?
15:15
polyrhythm
i guess I am not being technically correct, but look at the nonsense involved for adapting a PL-mount properly: https://woodencamera.com/products/e-mount-to-pl-mount-pro-sony-alpha-fs7mkii-fx9
15:15
polyrhythm
you need like little spacer shims and a support bracket and all this crap
15:15
se6astian
we are open to design any mechanical native PL mount or other standard but since there are so many adapters out there already the demand has been low to non existance from the community side so far
15:16
polyrhythm
yeah i guess you would need more high end productions weighing in before you'd see demand for the high-end glass standard like PL
15:18
se6astian
possibly, from a manufacturing side PL would likely mean steel elements where we currently have aluminum and the question if our current manufacturer can meet the required accuracy, we are also designing shims currently, its unlikely any lens mount that has a defined FFD will be manufactureable without them, just the question if its hidden inside the camera by te manufacturer already
15:19
polyrhythm
yeah sure. I think my perspective is probably not ideal for a first run of a prototype camera, just trying to provide the perspective of somebody who has invested in a lot of nice cinema glass and would want to use the camera practically on-set
15:20
polyrhythm
rather than in a lab or in my bedroom, haha
15:24
se6astian
sure :D
15:24
se6astian
its still some way to get it out of the bedroom :P
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