BrunoCH
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Posts posted by BrunoCH
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@Timotheus
Bad iPhone video. Hope it can help.
https://drive.google.com/file/d/1jOPTNaDZ4N-7kvtid5l6qOw_QpdFinhy/view?usp=sharing
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1 minute ago, Timotheus said:
@BrunoCH can you comment on the anamorphic functions of this monitor? Very interested whether it can display full size 2x stretch... Thanks.
I don't use anamorphic but you get 1X ; 1,33X ; 1,5X ; 1,66X ; 2X ; 2XMAG.
9 hours ago, androidlad said:17^3 precision is more than enough for monitoring. The ones that support higher precision all downconvert to 17^3 internally.
What do you mean about down convert internally? I expose my goal. I created with 3D LUT combine tool (colorizer.net) a Fuji deLOG -1 stop and another - 2 stop. these LUTs are to get a correct REC 709 image when I ETTR the FLOG on a low-contrast scene. But these LUTs are 3x65 and they don't work on my monitor.
Do you have an idea to do this?
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Good new ! Very good monitor but I'm a little disappointed by the Users LUTs. There are only 17x17x17. Not very useful. Hope the new firmware can improve this.
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Yes I formatted the card in FAT and I put the LUT at the root. The monitor recognizes the card but does not see the LUT.
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In LUTCalc, I made a LUT : False color for XT-3. I choose 3D 17x17x17. I check this LUT in FCPX. It works fine. But I can’t load this LUT in my monitor SWIT 55C.
Did anyone manage to do that?
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1 hour ago, DanielVranic said:
is HLG 10 bit or no?
Normally you can get the info with VideoSpec or Mediainfo (free app).
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3 hours ago, androidlad said:
It does.
What is your NLE? I saw something like this ugly thing on the FCPX viewer, but the export fixes that. And this magenta Flog thing isn't on the export.
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4 minutes ago, androidlad said:
There's a slight black bar at top and bottom yes.
The monitor doesn't work with 4K 50/60p. I set the HDMI output to 1080p though, it's sharp enough for critical focus.
Thanks for this answer
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On 12/1/2018 at 3:42 PM, androidlad said:
This is the best all around monitor:
https://***URL not allowed***/swit-cm55-affordable-lutenabled-55-monitor/
Grabbed it on cyber monday sale for only 189EUR and free shipping!
On the SWIT website :
“Standard HDMI-A input, supports:
3840×2160p (30 / 29.97 / 25 / 24 / 23.98) 1080p (60 / 59.94 / 50)
1080p (30 / 29.97 / 25 / 24 / 23.98)1080i (60 / 59.94 / 50) 720p (60 / 59.94 / 50) 480i/ 576i / 480p / 576p “
What happens if you shoot on XT3 in 4K DCI or 2K DCI 24p? The monitor doesn’t work? There is a crop?
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3 hours ago, androidlad said:
I asked Fujifilm about this, the customisation is only for the computer running the tether software, not for the camera display.
Thank for this answer. That's what I thought.
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It's written on owner's manual page 196 :
"HD framing can be customized using FUJIFILM Tether Shooting Plug-in PRO or Hyper-Utility Software HS-V5."
Has anyone tried this? What does this mean exactly? We can customize in the XT3 or only in the app? And what customization? Is it possible to create framing guides for 2.35 or 4/3?
@Snowbro : I would say the bottom photo is XT3.
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16 minutes ago, androidlad said:
4K is super-sampled from 6240 x 3510 (<30p), 5266 x 2962 (60p).
What do this mean?
6240x3510 video out of sensor downscale in 4K?
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17 hours ago, DanielVranic said:
Did many more 2K vs 4K test this weekend. 4K wins by a huge margin every time. Noise is much uglier and footage gets really unusable past 5000 ISO. 4K is still OK.
Still trying to find a workflow to convert to 709. Sony was much easier in Resolve to do Color Space Transform. Fuji doesn’t have an exact curve in their system.
Had best luck so far using Color Space Transform and setting it to Cineon Log and Rec.2020. My second technique was using the Fuji 2020-709 LUT and then doing a manual S-Curve on multiple nodes
If anyone know a better way, please let me know.
For my part, the noise level difference 4K vs 2K isn’t so important to making me change workflow. Remember human perception is more sensitive to noise level change than noise itself when it is at a reasonable level. I don’t use ISO sensitivity as an exposure parameter (because the sensor only has one sensitivity actually). When I shoot, most of the time, I use two sensitivity (one for exteriors and one for interiors) to maintain a constant noise level.
I use FCPX for editing and color grading.
11 hours ago, androidlad said:2K/HD on X-T3 is derived from weighted horizontal pixel binning and vertical line skipping, it's one of the main features of the 3.76um generation Sony sensor, it's an on-chip operation so less work for Fuji and less processing requirement.
Thank you for these explanations.
Do you have links to share?
And for 4k so how's it going?
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I did a quick 2K vs 4K test. You can download "trimmed" copies into QT of the original files. Only the length changes from the originals. No transcoding.
For the first two files (79 and 80) I wanted to compare moiré. But I didn't reproduce moiré (it is however the same pullover I've get moiré). Just a little bit of moiré above the bottom button on the 2K file. Nothing on the 4K. Not enough to conclude that there is less moire in 4K. I will try to repeat a test in another way.
For files 82 and 83 I wanted to compare the noise. There is a little less noise on the 4K vs 2K in a 2K timeline in FCPX.
All files are F-Log H265 10bits All-I, 400Mbps for 4k and 200Mbps for 2K.
79 and 80 : 680 ISO exposed to preserve the highlights.
82 and 83 : 3200 ISO exposed on the right.
(82 and 83 are out of focus. It is very difficult to focus on a Log ETTR)
https://drive.google.com/open?id=17e1c60bj81n8BQwoLP9xtQKKhCgOkC6a
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10 hours ago, DanielVranic said:
Attached are my examples - TIFF exports from Resolve-
First 2 are 2020-709 conversion, 2K and then 4K - 2nd set is Eterna LUT 2K and 4K
Your 2Ktiff is a 3840x2160 picture !?!
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1 hour ago, mercer said:
Good info, thanks @frontfocus!!! I didn’t know FLog was 2020. Is anyone experiencing any color shifts with a Rec709 transform?
On the file I shared above, the green of the pullover is not really accurate. But with 10 bits, there is so much latitude to correct.
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3 hours ago, mercer said:
I’m curious why there are noise issues with the 2K if there isn’t in 4K?
Is it common practice to ETTR F-Log? Does anyone know where middle grey is at in F-Log?
Me too I am curious to know. If I find the time, tomorrow or Saturday I do a test 2K vs 4K about moiré and noise. I'll share the file on google drive.
About exposing F-log, when I shoot a scene with a low contrast (very compress signal), I expose to the right. When I shoot a scene with high contrast, I expose to preserve the highlights.
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1 hour ago, mercer said:
Thanks Bruno, you really can push those files around. Thanks for posting.
What are your thoughts of the 2K vs 4K?
The original file is here
https://drive.google.com/file/d/1WrxAJs0NPvQ9jG5Sh5asBuxzfJjbC0j1/view?usp=sharing
- For my work (fiction shorts) I don’t need and I don’t want 4K. It’s too sharp on close-up. You need to use expensive filter like black pro-mist and/or soften in post.
- The 2K 200 Mbps is the best quality codec in the XT-3. (the equivalent in 4k should be 4x200=800Mbps)
- I think sometime, I can shoot 4K for a 2K timeline, when I need to crop or stabilize in post.
- I need to make more test for moiré. Theoretically there should be less moire in 4K. But the only shot I've seen moiré is this one on the green pullover.
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5 hours ago, mercer said:
Has anyone tested the 200mbps All-I 2K?
I must say, I think this camera may be the best camera available right now for the price and output.
Yep !
If you want I can send the file on google drive.
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3 minutes ago, androidlad said:
You should have tested in 4K. the 1080p mode on X-T3 (and on most cameras these days) is not supersampled. It's a combination of line-skipping and pixel-binning, hence the heavy moire.
You're right. I will test 4K for moiré. But for my work (short fiction) I don't need and I don't want 4K. Too much resolution and big file size.
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Some color grading to test the H265 10bits codec :
Very strong codec (but a few moiré on the pullover).
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I make a DIY support for my Roland R26 and I adapted this for the Zoom H4n. You can free download the .stl, and made your own support.
https://www.youmagine.com/designs/handheld-sound-recorder-support
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Nothing more. It's just different. I removed the pan bar and I pan and tilt directly with my two hands on the fig rig. I can switch very quickly between monopod shots and walking shots. For walking shots I down the monopod to minimal length and it comes something like a conterweight. And a last thing in outdoor situation. I can attach my jacket on my FigRig with a simple clip and hide my face and viewfinder to sunlight like guys who used to a view camera.
Sorry for my bad english.
User LUT monitor SWIT CM-55C
In: Cameras
Posted
I had the same idea. But something is buggy. I don't know if it's LUTCalc or the monitor (The LUTs seem to work correctly in FCPX). The LUTs with exposure compensation -2 and -3 stops work perfectly. The LUT deLOG and LUT exposure compensation -1 produce false colors in the highlights. I tried everything for hours I dropped.
https://drive.google.com/file/d/1LZMwjus41s9pEpzNwpJ9UfiBpl5C5h25/view?usp=sharing
I don't have photoshop.
There is also this solution but too complicated for me.
http://opensource.mikrosimage.eu/ColorPipe-tools/LUTLab/LUT_to_LUT/
I hope the kaisen firmware add downconvert high precision LUT to 17^3.