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Topics - rdemyan

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Chronos User Discussion / 100,000 FPS with the 2.1 as previously advertised
« on: September 11, 2023, 11:25:06 AM »
When I purchased my 2.1, it was under the expectation that the camera would be able to reach 100,000 FPS per advertising on Kron Technologies website.  To my knowledge (and please correct me if I am wrong), the limit for this camera is still around 24,000 FPS.  Is there a way to increase the FPS even if it is an unadvertised method. 

Chronos User Discussion / Problems with Save
« on: November 01, 2022, 05:53:46 PM »
Has anyone else been having problems with "Save" on the 2.1. I spent the whole day setting  up an experiment that uses expensive reagants.  Video proceeded just fine, but when I tried to Save the clip to the USB drive plugged into the camera, the camera just kept trying to save the entire clip over and over again (from beginning to end even though I specified a small number of frames to be saved). All buttons to abort the save or even move to another page on the screen were grayed out.  Ultimately I had to reboot the camera. There was a file saved on the USB stick but it could not be opened by at least five different software programs that I tried.

This has happened more than once and is costing me a lot of money because of wasted chemicals.  Also, why doesn't the 2.1 save the last video clip in memory?  That way at least if I have to reboot the camera, I can try again to save the clip.  Maybe I'm missing something but I can't find a setting that allows me to save the last clip in RAM.

Chronos User Discussion / Recording Frames per second and playback
« on: August 02, 2022, 09:40:25 PM »
I am recording the movement of particles using the Chronos 2.1.  I need to determine the velocity.  I set the 2.1 to record at 640 x 96 which means the recording frame rate was 24,046 FPS.  But when I try to measure the movement of the particles frame by frame I'm getting velocities that I know are too high (there is a ruler in the frames).  I've recorded before at 24,046 FPS and not had a problem.

The only thing that I think I did differently was I reviewed the footage on the Chronos 2.1 before saving.  This time I set the playback FPS on the Chronos 2.1 to 25 instead of 60. I then saved the footage with the playback FPS still at 25.  Does that affect the time differential between frames?  The time differential between frames should be 1/24,046 or about 41.6 microseconds.  This time differential is in the denominator when calculating the velocity.  It is critical to calculating the correct results.

The only other thing I can think of is that the Chronos was on for a couple of hours including  an hour where I was off doing something else, but I left the camera on.  Does the FPS degrade if the Chronos gets hot or is on too long.  I don't think it was hot, but I didn't really check.  It didn't feel hot when my experiment was over and I put the Chronos away.

On the datasheets, why does Krontech list the FPS as "Max FPS"?

Chronos User Discussion / Set Chronos 2.1 clock
« on: July 07, 2022, 01:12:43 PM »
The save times of the videos recorded with my Chronos 2.1 are not the actual times.  They seem to be behind by around 25 - 28 minutes.  I guess that's because the Chronos clock is off??  How can I set the clock on my Chronos?  It's a real pain to try and match up the save time with the time I record manually based on my computer clock.

Chronos User Discussion / Software for measuring velocity
« on: May 17, 2022, 02:41:27 PM »
Hi:  Can anyone recommend software for measuring velocity on a video shot using a  Chronos camera.  I'm measuring the movement of waves, so I would think the software needs to be able to move forward frame by frame.  I would like to be able to extract the frames as needed.  Also, I'll need to be able to draw a line on the video which will act as a ruler.  The line needs to show up on extracted frames.

Also, in video editing software, when advancing frame by frame, does the software for a typical program like AVS Video editor know what the frame rate was that the video was shot at (not the playback FPS).  I seem to be seeing some discrepancies.

Are there finally plans in place to increase the 2.1 FPS.  Originally the promise was 100,000 FPS, which is one of the main reasons I purchased the camera.  But it came with a maximum of around 25,000 FPS.  Are any increases planned - even if it's only to 40,000 FPS like the 1.4?

Chronos User Discussion / Heavy lenses
« on: January 22, 2021, 01:15:31 PM »
The Chronos 2.1 is heavy.  I want to attach a Nikon 80-200 mm F2.8 lens, which at almost 3 pounds is even heavier.  Based on weight, a tripod collar should be used on the lens which means that the 2.1 will be unsupported except at the screw threads between the camera nd the lens.

This sounds tenuous at best.  Any suggestions?

Chronos User Discussion / Magnification changes as FPS changes
« on: December 09, 2020, 12:39:13 PM »
Can someone please help me understand how the magnification changes as the FPS changes. I think that a FPS setting of 1280 x 720 on the Chronos 2.1 color camera means that the frame is 1280 (pixels??) wide by 720 high.  Is my thinking here correct?

If I change it to 1280 x 240, then the image is magnified because the vertical  height is reduced.  Is that correct?  If correct, there should be a fair amount of magnification.  Is there any way to calculate the amount of magnification?

If I reduce the width from 1280 to say 640, then does that also increase the magnification in addition to any magnification increase due to decreasing the height?

I need to get a lot of magnification because I'm doing macro filming of sprays. Right now the extension tubes have the lens too close to the subject and it keeps getting very wet.

Any help is appreciated.


Does anyone know why the color Chronos 2.1 won't show a live view if the analog gain is greater than 6 dB?

Anyone know how to control the digital gain from the camera's webpage?  There is a way to control analog gain, but I haven't been able to find a way to control digital gain.

Chronos User Discussion / Why the vertical color bands
« on: November 17, 2020, 01:14:27 PM »

I'm starting to use my color Chronos 2.1 and I'm having trouble with  color vertical bands. The bands are much worse when I lower the exposure time.  Because I'm using the camera for scientific purposes, I need to use a low exposure time around 50 microseconds.  But I still get the bands at higher exposure times although not as strongly. Is there something I can do to get rid of these?

Chronos User Discussion / Playing back high-speed video
« on: October 14, 2020, 12:32:56 PM »
Hi All:

I just got the Chronos 2.1 last week and it is pretty cool.  But if I film something say at around 5000 fps in .mp4 format, how do I play it back?  If I use something like AVS video editor, I can only slow the speed down to .05.  I'm not sure what the speed is then.  0.05 of what?  It does seem like the higher the filming fps, the slower, in a relative sense, it plays back at a specific speed setting in the desktop software.  Ultimately my question is, how can I tell people who view my video what speed they are actually seeing, because it doesn't seem to be the speed that the video was filmed in.


Is it possible to have the Chronos 1.4 color version film in black and white by adjusting a setting on the camera itself?  Yes, I understand that the color version doesn't have quite the sensitivity or resolution as the monochrome version, just wondering if it is possible.

Chronos User Discussion / Desktop software to playback chronos videos
« on: July 25, 2020, 05:13:17 PM »
I'm a complete newbie with video.  I just shot my first video with my Chronos 1.4.

I'm looking for easy to use desktop software which will playback the videos that I shoot.  I'm not sure how this works since there are many individual files in each of the folders.  So software which maybe allows me to select a folder and then the software will "play" all of the files at a selected speed?

Chronos User Discussion / Static IP Address
« on: July 25, 2020, 08:02:49 AM »
I just received the 1.4 and am playing around with various aspects.  I would like to be able to use the web interface, however, out in the field I will not have an internet connection.

I thought that simply plugging the camera into the network connector of my computer would bring up the web page (after entering an IP address).  However, unlike a router, the IP address provided for the mini USB connection does not work when using a network cable.  Would assigning a static IP address solve this problem?  If so, how does one do that?

Also, has anyone run into the problem of attaching the camera to a computer running Windows 10 via a mini-USB causes Windows 10 to crash.  This has happened five times.  After Windows 10 restarts, the camera can be seen on the web page and operated from there.  However, if the connection is lost or a thumb drive plugged into the camera, Windows immediately crashes again.

With a network cable plugged into a router CONNECTED TO THE INTERNET, there are no crashes and the webpage readily comes up and is connected to the camera.  But I won't have an internet connection in the field.

Thanks for any help.

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