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Messages - JamesB

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Software Dev / Re: Chronos V0.3.2 full release
« on: January 05, 2020, 05:58:17 PM »
So I finally got around to test this version after all the end of year madness, and have to report that it works very well.  I had an initial scare when I updated and all that was shown was a color chart with a lower right noise snow screen and nothing happened.   I promptly forced reboot and all was normal, with interface loading.

Black calibration worked fine and I find that it does a better job than before "Could be my eyes deceiving but could be better banding elimination algo" Or the changelog feature: (Automatic ADC calibration during black calibration, which should reduce column banding across a wider temperature range.)

The most annoying bug from the RC2 which was peaking making the camera crawl on an external HDMI monitor is gone and it works perfectly with no slow down or lock-up.   I recorded about 7 clips and no lockups which were a common thing in the last RC. I will have to test for longer standby and rec times but so far very stable.

I can't wait for the new standard UI to start rolling out to see a larger screen preview along with the info.  Great work team!



Software Dev / Re: Chronos V0.3.2-RC1 and RC2
« on: November 12, 2019, 04:13:06 PM »
Will try and report back, was not aware of it sorry!

Software Dev / Re: Chronos V0.3.2-RC1 and RC2
« on: November 07, 2019, 12:04:00 AM »
I used the latest beta RC2 and the lag on peaking with an external monitor is gone but now the camera hangs on displaying video at random junctures.  The interface somewhat works but the exposure bar and live feed are gone or frozen. Only fix is getting the camera to shut down and start back up.  Happened about 7 times in a 4hr period.  No idea what is causing it, I tried with and without HDMI plugged in and behaved the same way.   

The frame selector bar on play tries to adjust but it's pegged at 0 and frame 2 even when you try to scroll higher or lower. No image is displayed either.   

Software Dev / Re: Updating the UI: Main Screen v2 + Dark Theme
« on: October 07, 2019, 02:26:29 PM »
I believe the current design you showed is excellent and a vast improvement that gives the frame much needed space. Very RED like and useful without digging  into menus. Would love to have it soon including the latest peaking fix so I can use my monitor with it again.

Software Dev / Re: Chronos V0.3.2-RC1
« on: August 10, 2019, 01:11:46 AM »
Interesting, thanks for the testing the camera is getting better every day!

Software Dev / Re: Chronos V0.3.2-RC1
« on: August 06, 2019, 11:24:53 PM »
Found another small problem.

In Firmware 0.3.1 the first frame of RAW DNGs was completely white and now Frame #1 is still full white and now new bug Frame #2 is the last frame of the recorded area instead of the second frame in the sequence as it should be. This is happening for all saved sequences. It is a minor inconvenience as I have to delete both 1,2 from the sequence before processing.

I did notice saving is much faster on SD cards for some reason on 0.3.2 RC1, I am getting 4.5-4.8fps instead of 3.8 as a maximum before.  Very welcome change!  ;D

Software Dev / Re: Chronos V0.3.2-RC1
« on: August 04, 2019, 10:43:15 PM »
Thanks so much, looking forward to the peaking patch, I miss the feature big-time since my monitor peaking is not as accurate as the one you guys have been able top include in-camera!

Software Dev / Re: Chronos V0.3.2-RC1
« on: July 29, 2019, 12:00:09 AM »
Ok did some testing...

Everything works as expected with what seems improved column noise pattern reduction after calibration. It still requires camera warming up to get to a point where the calibration works pretty well, that is about 26 minutes warm up.
Fan goes faster when using AC power vs the battery, that is to be expected.

1 Bug Found: when using HDMI monitoring, you activate the focus asist function (peaking) on the camera and it slows to a crawl then image locks up and no motion is attained. Only fix is unplug the HDMI cable and things return to normal.  Camera refreshes signal and regular operation resumes.

It seems the cpu is overwhelmed when peaking is activated and HDMI is operating. Tried with a field monitor and an LCD viewfinder both showed the same problem,

Great job on the nice features like improved fps and storage info + format options, much appreciated!  :D

Software Dev / Re: Chronos V0.3.2-RC1
« on: July 26, 2019, 12:58:04 AM »
Great News!

Do we have to factory calibrate after applying this update or just use it as is?  Will test this weekend. Thank you!

Chronos User Discussion / Re: Forced to sell wife has cancer :(
« on: June 01, 2019, 06:30:42 PM »
I feel for you, we have been in the same situation for over a year now. Pregnant wife 39yrs old first child and breast cancer. Baby is fine after two chemo rounds. Wife did 8 and is now in radiation therapy. It has been a tough experience emotionally and financially. We had to sell a lot of things and forego many others and bills keep coming in.  Wish you the best of luck with your situation, there is light at the end of the tunnel, hang in there and never lose focus.

Considering these cameras are now more expensive I am sure you will get takers.  Try also posting it on other services like eBay if it doesn't work out here.

Chronos User Discussion / Re: Wish List - Tripod Mount
« on: May 06, 2019, 04:05:54 PM »
My camera had the same problem but noticed that the thread itself is not anchored to the camera and rotates sometimes to the outside. Once the thread renained on the tripod screw when dismounting. If you use a pair of pliers or rubber band you can rotate it out if it has the same problem as my camera. I have been thinking of using superglue to bolt it forever but if it breaks one day it will be a nightmare to get it replaced.

The 2.1 is  10Ám sized pixels while the 1.4 is 6.6Ám or 34% larger on the 2.1 which is really great. Now the sensor is more advanced which means better noise control which shows in the demo footage and that was not even shot at the final camera specs but in a 4k sensor with 5.0um pixels which are smaller than the Chronos 1.4 6.6um.  So expect a serious low light performance upgrade in the final 2.1. 😉

Chronos User Discussion / Re: Chronos 1.4 screen upgrade?
« on: April 13, 2019, 02:12:55 PM »
This should be a popular upgrade, thanks!

Chronos User Discussion / Re: Introducing Chronos 2.1 HD!
« on: April 13, 2019, 02:11:11 PM »
As I understand, there will be a m4/3 mount accessory on the Chronos store at some point. What I don't know yet is how the reduced flange distance will factor into this. Aimed Research did a trial 3D printed m4/3 mount for the 1.4 and the tolerance and spaces were extremely small from C to m4/3.  There is value in offering m4/3 lens support because there are dozens of excellent non electronic manual cinema style lenses for the platform like rokinons and SLR magics.
The 2.1 seems to be a camera that will really change the market and allow ownership of full HD slow mo to everyone. Great Mission!

Chronos User Discussion / Re: Black calibration best practices
« on: April 02, 2019, 10:18:59 PM »
Thanks for reading the blog!

I personally do the following now on the Chronos:

1) Start up camera...
2) Do black calibration immediately.
3) Wait up to 15min redo black cal
4) Wait an extra 15min do a new Black cal then ready for first shoot.
5) Repeat black cal every 30min to 1hr of continued operation.

Sure it is laborious but it is really a matter of reducing this artifact as the sensor and camera heat up.  Many slow motion cameras have this problem and some of the best require a new calibration every shot or every time any setting is changed. Edgertronics dobauto calibration on every start up and on every setting change but since it only takes 2sec andchas an automatic shutter curtain it becomes easier. We still saw shadow bands and verticals on edgertronic footage as the camera warmed up or got hotter which is normal in our reviews.

Try NeatVideo noise reduction plug in, it does wonders with any residual banding.

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