Brian Williams
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Posts posted by Brian Williams
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6 hours ago, BTM_Pix said:
It is UVC compliant so should be able to be used as is with any app that supports it like EasyCap or CameraFi (there are free versions of both that you can try it on)
Took me a while to figure this one out, damn iOS isn’t going to allow these apps any time soon.
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the z cam uses the USB-C connection to an iPhone, along with an iOS app, to allow the phone to work as a monitor; considering the FP can connect to a computer via USB and used as a webcam, wonder if this could be made to work the same way with a sigma iOS app. Of course no more ssd recording then I suppose
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55 minutes ago, The ghost of squig said:
Just need an OLPF. Whilst I like just about everything about this cam, the aliasing is a worry. I won't touch it until there's a solution.
I don’t know, a lot of well received cameras don’t have them, the Pocket 4K being one. I haven’t seen any footage of mine from the FP that concerns me.
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4 hours ago, mechanicalEYE said:
Using Powerextra batteries just fine.
Really? And battery level works with them? I’ll have to try them out then, are we talking BP-51’s or BLC-12’s?
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Just need a firmware update that allows Wasabi (or any other 3rd party) batteries and it'll be good to go.
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6 hours ago, rawshooter said:
A firmware update is out that fixes the CinemaDNG problems:
Yes! Pinocchio just became a real boy
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11 minutes ago, cpc said:
12-bit is linear. 10-bit is linear. 8-bit is non-linear.
So when @paulinventome says "the 8bit DNGs have a linearisation table attached to them", am I misunderstanding what that means?
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On 10/18/2019 at 12:20 PM, cpc said:
It is not linear. I haven't looked at the exact curve, but it does non-linear companding for the 8-bit raw. The 12-bit image is linear.
On 10/19/2019 at 3:17 AM, paulinventome said:Yes, i delved a little deeper and the 8bit DNGs have a linearisation table attached to them.52 minutes ago, cpc said:The 10-bit file is linear and the 8-bit file is non-linear.
I'm confused, it the 8-bit linear or not?
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24 minutes ago, rawshooter said:
Could it be that you mixed up the 8bit and the 10bit files?
No, I'm pretty positive that's correct, especially looking at the sequential numbers of the file names, I definitely went up the line, 8-bit, 10, 12 in order.
EDIT- Yeah, I checked via raw digger, they are correct.
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10 hours ago, Lars Steenhoff said:
Can you also make two cdng's one from the cropped apc mode and one full frame?
Ok here are two shots, both CINE mode, one uncropped, one APS-C cropped.
aps_crop_A001_005_20191106_000012.DNG non_crop_A001_006_20191106_000001.DNG
3 hours ago, paulinventome said:Thanks for the DNGs, it's really useful to compare the same frame in different modes. The two you did show that it is scaling the full width of the sensor and that the shadows in the 8 bit version are green. But overall a really interesting comparison. It would be super useful to do that with something that has dark to clipping in the scene and 8, 10 and 12 bit with a 14 bit stills control... But yeah, a bunch of work that you may have better things to do with your time! Cheers, Paul
OK, here you go, 8bit , 10bit, 12bit all from CINE mode and a 14bit still- sorry it wasn't on a tripod so the camera moved slightly
still-SDIM0189.DNG 12bit-A001_007_20191106_000006.DNG 10bit-A001_006_20191106_000005.DNG 8bit-A001_005_20191106_000004.DNG
We really need that firmware update for shooting to SSD- I exchanged my 500GB T5 for the 1GB version in hopes it might fix the issue, but no, a handful of CDNG clips are still coming in with frames misplaced in the sequence, and I don't have the patience anymore to go through them and try to correct the order.
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6 hours ago, Lars Steenhoff said:
Can you also make two cdng's one from the cropped apc mode and one full frame?
Ok I’ll do that in a bit.
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4 hours ago, rawshooter said:
Would be really grateful if people who own/used the camera could clarify whether or not it crops the sensor when shooting 4K CinemaDNG.
Normally, RAW video means 1:1 sensor readout. Since the FP has a 6K sensor, this would then mean a crop from full frame (36mm) to APS-C (24mm). However, it seems - from reading the manual - that the APS-C crop is only optional and the camera can record 4K CinemaDNG with full sensor readout. Is it then binned RAW?!?
I'm not sure how to test other than by doing this, but here are two DNG's, the first is a frame from CINE mode, a 4K DNG sequence (A001_002_20191105_000001.DNG), the second was taken in STILLS mode as a single DNG (SDIM0188.DNG).
Obviously the frame from STILLS mode is larger, but if you scale up the CDNG file, you'll see the framing matches, so no cropping (other than the vertical cropping to make it 16:9).
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Can’t afford that $300 Sigma loupe so making my own. A newer version is printing now that will be collapsible (also sanded and painted so not bright yellow)
- buggz and billdoubleu
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1 hour ago, thebrothersthre3 said:
Why not record the 8 bit RAW to an SSD?
Yeah, I totally could, it’s just that being able to ditch the SSD hanging off the side of the camera is the main pull for the 8-bit raw; if I have the SSD attached, I feel like I might as well go ahead and shoot 12-bit.
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This isn't going to sell the camera to anyone, but I will say, having completely written off the 8-bit raw before I even got the camera, I was intrigued by the article here to give it a go, and while you can't push the grade like you can with the 12-bit, having the benefit of being able to adjust the white balance after the fact is really great, and I'm totally sold on using the 8-bit. Just sucks that a fast UHS-II card with a fraction of the capacity is more expensive than a 500gb T5. (Or half-glass full, awesome that a T5 is cheaper than a fast UHS-II card with a fraction of the capacity!)
Shot with the Sigma MC-21and the Canon thrifty fifty (which is a horrible combination btw, the slowest focusing I've ever seen, they're both going back). Works great in manual. Looking forward to some stabilized L-Mounts.
- Lars Steenhoff, jase and heart0less
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Can anyone help figure this out? So after doing some research, I read that the battery the FP uses is the same as a Panasonic battery, I guess the same one the GH2 used? SO I bought two Wasabi BLC-12 batteries. When I put them in the camera, the camera turns on, but I was getting this weird indicator for the battery, which a lighting bolt over it, as though it were charging. So I looked it up in the manual, and it shows the attached screenshot, "Camera is operating on household power or an external battery."
How is that possibly since the camera isn't supposed to be able to run while charging? Or is that only the case when actually charging via USB?
So is it seeing this battery as though it were an external cord, and therefore I'll never actually get an idea of what the battery charge is?
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1 hour ago, Video Hummus said:
Someone needs to make a device with a USB-C port that takes the CDNG from the camera and outputs compressed CDNG to a T5 SSD in realtime.
I guess you could get one of those intel PC sticks, install slimRaw on it, and then write a script that runs whenever you attach an SSD to it to automatically start the compression process. Doesn’t sound so smooth when I write it out though.
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1 hour ago, Waynes said:
Such a shame they didn't go 6k and 4k 50 fps, with same compression data rate. Would have been more than cool. The little camera that is, but at the same time almost was.
Makes we wonder if the hackers could do 4kp50 or 6kp50 this way.
I'm sure they didn't do those thing you mention because it can't handle it, just like almost every other camera out there. You're disappointed that a $1900 Fullframe camera that shoots raw video can't do 6k raw at 50fps??
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3 hours ago, Anaconda_ said:
That's worrying, hopefully they'll come with a fix for that, and the mode switching very soon. What's Sigma's track record with updates?
It depends what NLE you're using, but you could import them all as still frames, sort by time created and then bring them into your timeline... the odd frame that is in the wrong place can't have been created 10 frames before it was captured... if that makes sense... so maybe that can help you avoid having to rename them all?
Well the more I edited, the more clips I found like that- maybe it was a one-off error. I finally figured out the pattern, every frame that ended in a 2 (ex. 0042) needed to go back 8 frames, so renamed to 0034 (well, renamed to 0033b, then do a batch renaming of the whole folder once they are all renamed so that everything is sequential), and so on down the list. A pain in the ass for sure, I can't imagine they won't fix it though. Scared to shoot raw on my SSD at the moment though.
Another weird thing- Sigma said that the first two frames of SSD sequences would be messed up for now, but I started seeing the second frame in each sequence was actually a frame from the previous sequence. Its all very odd.
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I'm also going to keep reminding myself that this is firmware 1.0, bc as I'm going through and editing what I shot this morning, I'm getting a bunch of DNG clips where, maybe every 10 frames, a frame is off by like 10 frames, so the whole clips keeps jumping all over the place. Fixable by combing through frame by frame and renaming them all, but a serious pain in the ass.
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5 hours ago, Andrew Reid said:
Sometimes the second frame of a Cinema DNG recording to an SSD is corrupt.
I am using version 1.0 of the firmware, so I am sure a fix will be coming soon.
Also the first frame of each sequence is scaled up, but Sigma acknowledged this in their recent press release- https://www.sigma-global.com/en/news/2019/10/24/2318/
But Andrew, am I doing something wrong here, I am correct in saying that switching from CINE to STILL carries over whatever Focus/ISO/Program mode setting you already have set in the prev mode?
I just came from shooting my kids Halloween school parade, and it was tricky to switch back and forth between video and stills; I would use the MF/AF switch on the lens to switch, use the CINE/STILL to switch the actual mode, then the Mode button to choose A for stills or C1 for video, so three steps really. And if I hadn't already setup C1, I would've also been having to set ISO. I really wish everything was separate so you could just switch modes solely with the CINE/STILL switch, I'm spoiled with my E-M1m2 setup.
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Is it me or is the camera system a little wonky? Like I would assume settings wouldn’t carry over from Stills to Cine, or vice versus, but if you set AF to manual In CINE mode, then switch over to stills, I’m still MF. Same for ISO, program mode. I’d hope these things would’ve stay specific to either mode, to make it easier to switch back and forth.
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Its not great, but if anyone wants this, here's a short 4K 12-bit DNG sequence I shot tonight-
Sigma Fp review and interview / Cinema DNG RAW
In: Cameras
Posted
And also, at least when I plugged the camera into my laptop as a webcam, you can’t record internally (or even open the menu). So yeah, it’s not an option at this point.
Honestly, I’d be ok with Sigma just implementing a feature that flips the screen vertically, so a mirror at 45 degrees could be used for looking down on the camera, Rolleiflex style. That’s how I tend to shoot 99% of the time with articulated screens anyway.