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23:22 | troy_s | alexML: Ugh.
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23:22 | troy_s | alexML: I will step you through a more proper toolset if you are interested. I am around tomorrow.
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23:40 | troy_s | alexML: Probably take ten minutes to give you the lowdown.
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03:27 | troy_s | God. SCREW DNG
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03:27 | troy_s | SERIOUSLY
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03:27 | troy_s | What a bunch of rubbish.
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04:24 | Bertl_zZ | changed nick to: Bertl
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04:24 | Bertl | morning folks!
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05:01 | Bertl | off for now ... bbl
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05:01 | Bertl | changed nick to: Bertl_oO
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05:34 | troy_s | Bertl_oO: Here's the updated matrix for D50 adapted based off of the Hutch chart
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05:34 | troy_s | Bertl_oO: Image: http://www.pasteall.org/pic/show.php?id=96530
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05:35 | troy_s | Bertl_oO: OCIO stanza http://www.pasteall.org/62722
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05:36 | troy_s | (The first matrix takes the camera raw to XYZ based on a D50 chromatic adaptation, the second stanza takes the data from XYZ D50 to sRGB D65)
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05:37 | troy_s | To view, use the Hutch colorchart raw12 data from irieger's shot, debayer it, and stuff it into a tif or like format. Load an OCIO enabled application with the above stanza included and simply flip the image to the colourspace.
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05:37 | troy_s | (Description in the stanza is old, so ignore it.)
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05:43 | troy_s | irieger: Did you pop any further sample footage.
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05:59 | troy_s | Here's the IT8 irieger shot using the HutchColor generated D65 result: http://www.pasteall.org/pic/show.php?id=96532
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05:59 | troy_s | (That is, it is using the matrix I derived from the HutchColor chart, not using a custom matrix based off of the IT8 in question.)
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05:59 | troy_s | And here's the ColorChecker Passport shot under the same HCT generated matrix, again, D65 adapted:
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06:00 | troy_s | http://www.pasteall.org/pic/show.php?id=96533
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06:00 | troy_s | Ok. Off for bed.
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06:01 | troy_s | At some point it would be great if Bertl_oO and irieger would be willing to learn OCIO so that we can all standardize on the OIIO image viewer and all see the same things using the proper transforms. I'm happy to push and maintain an OCIO configuration with LUTs but I need you folks on the same page.
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06:01 | troy_s | se6astian|away you too.
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06:01 | troy_s | (and anyone else interested, ping me.)
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06:02 | troy_s | irieger: Nice work on the tweaked registers. The results are pretty damn impressive for being this early.
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06:08 | troy_s | 15ms version of the Passport http://www.pasteall.org/pic/show.php?id=96534
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06:08 | troy_s | (the original was the 40ms
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06:08 | troy_s | 30ms version of the Passport http://www.pasteall.org/pic/show.php?id=96535
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06:09 | troy_s | 50ms version of the Passport http://www.pasteall.org/pic/show.php?id=96536
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06:09 | troy_s | Those are _all_ using the identical OCIO transform as given in the above stanza, all based off of the HCT with synthetic black and white D50 points added to the reference data in irieger 's directory.
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06:10 | troy_s | I also had to reformat the blasted HCT data using vi which was a bit of a pain, so perhaps irieger or Bertl_oO could upload it to the directory:
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06:11 | troy_s | http://www.pasteall.org/62723
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06:11 | troy_s | That's with the synthetic D50 black and white appended.
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06:13 | troy_s | Got to say, the charts look darn good.
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06:13 | troy_s | So much better than the Alpha data.
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06:13 | troy_s | Anyways, out. Ping me and make sure you use my handle.
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07:57 | intracube | troy_s: looks good
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07:57 | intracube | troy_s: looks like there's a slight green/blue cast to the shadows
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11:26 | John_K | hello all
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11:27 | John_K | Bertl_oO: do you remember what values you use fro the bypass caps on the dummy interface board?
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11:27 | John_K | for*
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11:27 | John_K | the 0805's
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12:05 | John_K | btw, there are major problems with the Sensor board v0.18 R1.3 BOM, a huge amount of parts are specified as 0402 when they are using 01005 foorprints
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12:07 | John_K | hrm, or its just really late and I'm missing something
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12:09 | John_K | gah board revisions are different, my pcb is r1.3 and the bom is r1.4 - look likes some components grew in the revision bump
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12:10 | John_K | time for bed
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12:25 | irieger | troy_s: I'm still sitting here trying to tweak sensor DR mostly. Getting around 6-7 stops currently which I don't see as enought and as everything else in the color science depends I'm currently focused on the DR
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12:26 | irieger | troy_s: I in general have no Problem with OCIO. Could throw it in Nuke/Fusion. Or just read the matrix from it to use my matlab code ;-)
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13:32 | troy_s | irieger: The PL should augment the DR
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13:34 | troy_s | intracube: Didn't see it. Nor did I look too closely.
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13:34 | troy_s | irieger: OCIO / OIIO as the baseline reference tools, not Nuke / Fusion.
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13:35 | troy_s | OIIO has iv the image viewer.
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13:35 | troy_s | Which when cyclically compiled has OCIO support.
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13:35 | troy_s | At least to baseline all of the working tools.
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13:46 | irieger | ok, didn't knew there was an image viewer in the package.
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13:46 | irieger | troy_s: PL?
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13:47 | troy_s | irieger: Piecewise Linear ramps
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13:48 | troy_s | irieger: Hopefully the PL ramps can deliver roughly equal bits per stop.
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13:48 | troy_s | (It isn't a curve, but perhaps some bending by the onboard chips with the PL ramp will get the DR up to where it needs to be.)
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13:49 | troy_s | (And keep the bits per stop equal.)
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13:49 | irieger | Ah, sure.
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13:53 | intracube | troy_s: no problem. I'm sure this is the first profile iteration of many :)
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13:53 | intracube | just for ref: http://imgur.com/UthfWAx
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13:54 | intracube | quite noticeable in context with Blender's (and imgur's) grey interface
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14:00 | troy_s | intracube: Notice how it scales to white.
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14:00 | troy_s | intracube: I will speculate and say that the illumination wasn't D50
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14:00 | troy_s | irieger: What did you light those charts with?
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14:01 | troy_s | intracube: What does the sample line yield on the Hutch?
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14:02 | irieger | troy_s: Have I already uploaded an image? Not sure.
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14:02 | troy_s | (I am reasonably sure the D50 XYZ to D65 matrix is accurate, but it was canned and I didn't do the math to derive it)
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14:02 | troy_s | irieger: The December 10th images? Are they yours?
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14:02 | troy_s | I was under the impression they were your set.
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14:03 | irieger | I'm not sure if/what I shared the last days. But I think you mean some images from se6astian|away or so. Can't say what they did. I'm many hundred kilometers away from the headquarters ;-)
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14:03 | troy_s | Hrm. Let me grab the link.
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14:04 | troy_s | http://files.apertus.org/AXIOM-Beta/snapshots/colorcharts/
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14:04 | intracube | troy_s: highlights are also lacking in blue slightly by the look of it
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14:04 | troy_s | (That HCT CIE file was yikes... No line breaks.)
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14:05 | irieger | Nope, not mine ...
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14:05 | troy_s | intracube: Sounds suspiciously like a skew along the magentaish / greenish axis, which stinks of good for nothing Kino Flo's.
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14:05 | troy_s | ;)
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14:05 | troy_s | Could be a matrix boo boo, but my gut says illumination tool.
| 14:06 | intracube | doesn't know pro-lighting :)
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14:06 | troy_s | Kino Flo are fluorescent tube fixtures.
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14:06 | troy_s | Widely known for their colorimetric poopyness.
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14:07 | troy_s | (Used regularly, but often requiring correction if accidentally hitting a face.)
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14:07 | irieger | troy_s: I'm doing everything with two 750W tungstens with a full CTB to have a roughly 5000K temp with a continous spectrum
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14:07 | troy_s | Not a great tool for profiling.
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14:07 | troy_s | Bingo.
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14:07 | troy_s | irieger: How much CTB?
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14:07 | irieger | troy_s: Nicely described.
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14:07 | intracube | troy_s: ah, ok
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14:08 | troy_s | irieger: I would think an HMI source would be less gel to reel down?
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14:08 | troy_s | Full CTB is a thick slab of gel.
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14:08 | irieger | troy_s: a full one per light. Gives me roundabout 5000K which is the area where most sensors are kind of at home.
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14:08 | troy_s | (Puts more reliance on Rosco and Lee.)
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14:08 | irieger | troy_s: I know. But its a much more nicely spread spectra
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14:08 | troy_s | irieger: More importantly the spectro results are all D50
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14:09 | troy_s | HMI should be pretty smooth too, reflectors depending.
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14:09 | irieger | as I already said I didn't so much color
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14:09 | troy_s | So six to seven stops in linear mode eh?
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14:09 | troy_s | Do you have NDs at your institute?
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14:10 | troy_s | (Gel)
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14:10 | irieger | Yep, HMI is pretty good too. Better than I thought actually after looking at the spectra now. Problem was: All the usable HMIs where on a shoot when I set up my lab last week
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14:11 | irieger | troy_s: currently yes, about 7 stops. And we have all kinds of correction, ND, WD etc.
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14:12 | troy_s | i1 Display Pro is on sale for 100$ off if anyone is interested. BHPhoto.
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14:12 | troy_s | Skookum good deal.
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14:12 | irieger | Have one already ;-)
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14:12 | troy_s | irieger: Have you ever set up a latitude test in camera?
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14:13 | troy_s | If you have ND or nets you can probably set one up rather easily.
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14:14 | troy_s | (Single frame, all stops represented in full stop or finer increments.)
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14:16 | troy_s | irieger: You are likely more than capable to start experimenting with that PL voltage
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14:45 | irieger | troy_s: Only worked with exposure adjustment but I have planned to shoot another test with some over/under via nets/additional lights or so. Even if not ideal the exposure shifting worked quite good with the blackmagic thought.
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14:46 | irieger | As said, I had to work with what was available. The other production just came back so in the coming days I should have access to more equipment. And I prefer nets over ND gels
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15:01 | troy_s | irieger: Look forward to your tests
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15:03 | irieger | me too ;-)
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15:07 | troy_s | irieger: Are you working on your PhD?
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15:17 | irieger | troy_s: Bachelor thesis ...
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15:17 | irieger | PhD is far away I'd say ;-)
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15:17 | irieger | don't know if I will go that route
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15:18 | irieger | The working title I now working under is 'Designing a color pipeline for the Apertus Axiom open source camera.'
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15:19 | troy_s | Lulz.
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15:19 | troy_s | That including dailies?
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15:19 | troy_s | The mighty fork between editorial and post.
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15:20 | irieger | well, shouldn't matter where it is used later on ;-)
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15:20 | troy_s | ???
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15:21 | troy_s | You said pipe, that would be included.
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15:21 | irieger | it's up to the users to use the tools, isn't it ;-)
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15:21 | troy_s | Otherwise it is more of a mesh grating.
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15:21 | troy_s | Oh god no.
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15:21 | troy_s | You sort of need to frame the pipe.
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15:22 | irieger | Sure. Let's see how it develops. In general I'm aiming to do the whole picture but it depends how it is going.
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19:55 | Bertl_oO | John_K: should be 47u, but 22u might be more than enough
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21:21 | Bertl_oO | off to bed now ... have a good one everyone!
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21:21 | Bertl_oO | changed nick to: Bertl_zZ
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22:05 | irieger | changed nick to: irieger|away
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