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Messages - tesla500

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Chronos User Discussion / Re: Bad Image Quality
« on: December 10, 2018, 12:23:37 PM »
Hi, I'm new to the community.

I just got my new Camera, and out of the box the image quality was really bad.
After doing some adjustments with the shutter speed (max)/ resolution (max)/lens/ black calibration, it got better but it's NO where close to what I see posted on YouTube from everyone here.
Also the save footage is always way darker than whats on the display of the camera but that's possibly fine from what I read on the forum posts here.
Lastly the saved footage has somewhat of a black frame flicker effect, not sure what's happening here.

I'm currently of software version 0.3.0

I would seriously appreciate any help/ thank you in advance! :)

Hi Oli,

Please post an example image and/or video showing the problem. As others have said, it's very hard to tell what's wrong without seeing an example.


Chronos User Discussion / Re: Can no longer do backfocus adjusment
« on: November 20, 2018, 07:38:04 PM »
Solved via email. In case anyone else has this problem, the solution was to loosen the backfocus lock screw to ensure that the brass rod had enough clearance to allow the CS ring to be screwed into the proper depth.

Can you save video successfully to the storage device that has the update on it? Does the drive show up in the drive selection box in the save settings window?

Chronos User Discussion / Re: Waterproof/weatherproof enclosure?
« on: October 19, 2018, 04:09:49 PM »

Software Dev / Re: Chronos V0.3.1 Beta
« on: October 17, 2018, 12:25:57 AM »
Is there something else missing from the CinemaDNG tags? Even Photoshop cannot open the files. No previews in macOS.
I'm having no trouble with the new beta 9 and Photoshop CS5 now.
TIFF files open with no issues. CinemaDNG does not open in Davinci Resolve or in Photoshop CC 2019. Even Lightroom CC 2015 does not want them.
And yes I'm using beta 9.

Could you upload a problem DNG file here so we can investigate?

Chronos User Discussion / Re: Moonlit stills, Chronos suitable?
« on: October 16, 2018, 04:44:34 PM »
The noise you're seeing here is actually just dark noise. Black cal won't work below about 60fps, so what you're seeing is an uncalibrated image. Try doing a black cal at 60fps then changing to 10fps.

Software Dev / Re: Software Roadmap - 0.3.1, 0.4.x, etc.
« on: September 19, 2018, 08:27:41 PM »
For several of the applications I would like to use my new Cronos 1.4 it would be really beneficial to have the ability to use the "Run-n-Gun" and the "Normal + Continuous" recording modes mentioned in the User Manual. I didn't see any express mention of them in the Software Roadmap and was curious as to when we might see that feature added to a software update?

Unfortunately we don't have a timeline for this right now. Those two modes require the use of dual video ports on the camera's CPU (one for live view, one for saving). We've come to find out that Texas Instruments built in no support for this in their software, even though the hardware has two fully functional video ports. Getting the second port running is a very large amount of effort, and is lower on the priority list compared to major, commonly requested features like Ethernet remote control, image quality improvements, and HDMI.

The issue with colored pixels that patrickrebstock is seeing is due (mostly) to a known bug in the new demosaic, see the post after this one for more info.

Nikon1 is still correct, this is an intrinsic issue with bayer pattern sensors, but it's not anywhere near as bad as the video Patrick posted makes it seem. Right now, for difficult scenes like this, the best you can do is save raw and use a very good demosaic such as Rawtherapee's Amaze algorithm, which handles these single pixels better, although our demosaic is pretty good compared to most (once the bug is worked out).

The "proper" solution requires a hardware change; an OLPF (optical low pass filter) placed in front of the image sensor, where the IR filter is. This deliberately blurs the image slightly before it hits the image sensor, smearing the sharp single pixel objects over adjacent pixels, which allows the normal demosaic interpolation to get the true color of the drops instead of the false color you're seeing. After demosaic, a digital sharpening filter undoes the blurring effect of the OLPF. I'm currently looking into having these made, they'd eventually make it into new production cameras, and also be available as a user installable upgrade for existing owners.

Can you successfully save video to those USB drives on the camera?

Chronos User Discussion / Re: transfer video to computer via code
« on: August 22, 2018, 04:17:04 PM »
I tried to ssh to the camera using Putty and it failed to open the connection. The error message is attached. Any thoughts? Thank you!

Try the following to connect to the camera via SSH and see if this works. If this doesn't, you may need to use an older version of Linux on your PC or investigate the encryption methods supported on your distro. The old Arago Linux build on the camera doesn't support modern crypto, and most systems today by default disallow the insecure modes supported by the camera

ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 root@

The card image mentioned above is V0.1, you can directly update to V0.3.0, then apply the demosaic update.

Software Dev / Re: Software V0.3 RC2 (Updated June 11, 2018)
« on: August 06, 2018, 03:21:16 PM »
I can't be the only one who has trouble with these updates.   No matter how I follow the instructions,   it still takes an hour of trying to shift files around until I either give up or get lucky and it eventually works.    I think I am still on version 2.0.   

You have one of the original prototypes which is not compatible with these updates (yet). Check your email shortly, we can upgrade your camera to accept the production firmware releases

This beta update adds a greatly improved demosaic for in-camera h264 saving. This brings the quality of saved MP4 files near that of externally processed RAW files. We've been using this regularly without issues, but as always with beta software, don't use it for anything mission critical where you can't recreate a shot.

This replaces the old bilinear demosaic with one based on AHD (Adaptive Homogeneity Directed), with some modifications for fewer color artifacts around single-pixel objects, and lower resource utilization.

This update must be installed over V0.3.0, if you have not installed that, follow the instructions on the software update page. Once you're on V0.3.0, you can download the attached update, the installation instructions are exactly the same as for V0.3.0 update linked above. Once installed, the application revision will remain the same but the FPGA revision will be 3.9

Let us know how it works!

Chronos User Discussion / Re: crash test filming with Chronos
« on: August 01, 2018, 03:37:03 PM »
I'm confident the camera will handle 16g acceleration. If it breaks we'll cover that under warranty. Small lenses such as the Computar primes should be fine but larger lenses would need a support cage.

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