Recent Posts

Pages: 1 [2] 3 4 ... 10
11
Chronos User Discussion / Re: external trigger
« Last post by BiduleOhm on October 21, 2017, 06:31:34 AM »
It's already available, see page 11 and 12 of the manual http://www.krontech.ca/uploads/9/3/8/3/93836312/chronos_1.4_user_manual_rev_3.pdf ;)
12
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by tesla500 on October 20, 2017, 11:29:25 PM »
Got some new footage:

https://www.youtube.com/watch?v=SPf6Pv2KeGk

It was on a German "outdoor" shooting range, so basically indoors... low light conditions. Still don't have constant light sources to illuminate the scene.

There are colored lines visible some times. I know this can happen when the memory is cold, but it was about 16 C, which I wouldn't consider cold. Is there any way to prevent this? I plan to do some more filming in early January, and don't want all of the footage to show these lines.

Also I got trouble with focusing. It seems like the adaptor ring doesn't have a good hard stop, and the backfocus needs to be set depending on the torque that was applied when mounting the lens. I still store the camera in its shipping box, because this is very well stuffed, but that means I need to take off the lens for storing.

Any ideas on how to get this fixed?

The cold temperature RAM issue will be completely fixed in the next update. We're just testing this update right now before releasing it, expect it in a week or so assuming no problems are found. We've tested the camera down to -20C and there is no issue at all with the new software.

To avoid taking off the lens, cut out a portion of the box foam so you can store the camera without taking off the lens. Also, check that you tighten the backfocus lock setscrew enough, if it's not tight the ring will spin and change backfocus when you screw the lens in hard.

David



13
Chronos User Discussion / Re: external trigger
« Last post by pstest on October 20, 2017, 05:34:27 PM »
Thanks Tesla500
Mechanical rotation events have an inherent inertial and frictional delay after the event "start" command signal is executed.  The time or frame at which the motion command input signal is executed must be known Without a known event start time, there is no basis upon which to determine acceleration/deceleration behavior or capacity to optimize the behavior.  Camera tools exist to delete frames after event is complete.

2 Potential workarounds come to mind:
    1.  Preferred work around: I purchased the switch cable w/push button S/W. 
         Hack the switch leads; connect to computer using opto-coupler FET circuit instructed with
         computer that issues the rotational event motion command signal.  My assumption is, since the
         push button is a continuity interrupt to start recording, electronic switch closure can replace
         the button. the external opto-coupled trigger circuit would have to be developed about
         required electronic parameters & specs. Aspects such as impedance, trigger signal duration, 0-
         6.6V or 5V TTL assumed to be supported?, amperage limits, etc.
         Is KronTech willing to support this effort providing the BNC port electronic parameters to assist
         in development of an opto-coupled triggering circuit?
         This support a digitally integrated test environment.

    2.  Less preferred method - place a visual signal (LED) in the FOV with the LED actuating when
         motion command signal is executed - The manual push button camera triggering would be
         followed by motion command signal execution.  this can be a manual actuation of both the
         push button and motion execution or trigger delay technique which has not been conceived on
         my part at this time.

Another question - how is data stored and retrieved from camera?

Please advise if Krontech can support info-sharing as detailed in #1 above.

Best Regards
pstest
14
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by Fyodor on October 20, 2017, 01:04:16 PM »
Sorry. Was meant to be "not listed", instead I selected "private". Now it should be available over this link.
16
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by Fyodor on October 20, 2017, 02:58:29 AM »
Got some new footage:

https://www.youtube.com/watch?v=SPf6Pv2KeGk

It was on a German "outdoor" shooting range, so basically indoors... low light conditions. Still don't have constant light sources to illuminate the scene.

There are colored lines visible some times. I know this can happen when the memory is cold, but it was about 16 C, which I wouldn't consider cold. Is there any way to prevent this? I plan to do some more filming in early January, and don't want all of the footage to show these lines.

Also I got trouble with focusing. It seems like the adaptor ring doesn't have a good hard stop, and the backfocus needs to be set depending on the torque that was applied when mounting the lens. I still store the camera in its shipping box, because this is very well stuffed, but that means I need to take off the lens for storing.

Any ideas on how to get this fixed?
17
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by BlackthorneMedia on October 19, 2017, 02:09:16 PM »

great to see someone getting some bird in flight shots!

Now that I have added my actual video link (LOL) you can check out some more.


I agree...great idea with the holosight!
18
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by patrickrebstock on October 19, 2017, 12:27:14 PM »
I finally have a way to quickly aim and follow targets using a $40 Amazon gun sight, now I just need to find a way to quickly pull focus.

All the clips were shot with a 400mm lens (effective 1560mm) at ~f8-f11 and 6db gain on the camera.

https://youtu.be/JyLn4jDvqTU
great to see someone getting some bird in flight shots!
19
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by BlackthorneMedia on October 19, 2017, 12:24:01 PM »
Our forst couple of hours running around shooting anything that we could find that moved fast. LOL. Its funny, once you get to 1000 FPS its kinda hard to find something compelling to shoot.

As we are a firearms marketing firm ,expect more of that soon!

For now we wanted to get some time with the 1.4 and get sued to how it handles light and setting up shots,  working with the firmware and just general use and setup/teardown. So here is a nice relaxing slowmo vid comprised of local Prince Edward County Ontario attractions.

Computar 12.5-75mm f/1.2 zoom lens

https://vimeo.com/238853984

20
Chronos User Discussion / Re: trigger cable for IO1 (BNC)
« Last post by wally_x on October 18, 2017, 05:55:15 PM »
I bought a cheap 75ohm bnc cable on amazon and it fit and worked fine.

I also used a normally close button in my diy trigger (just used what I had laying around and didn't see this post in time) but it works fine. I just click the invert button in the trigger control panel.

Pages: 1 [2] 3 4 ... 10