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Messages - gyppor

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Chronos User Discussion / Re: Filming welding arc - filter necessary?
« on: October 29, 2018, 11:16:26 PM »
Thanks, looks like I'll use a welding shade. I was hoping to film without the greenish tint of welding shades but I'd rather save my sensor!

Chronos User Discussion / Filming welding arc - filter necessary?
« on: October 28, 2018, 10:48:21 AM »
Hi Kron Tech,

If I want to film the arc from a stick welder, should I use a welding shade in front of the lens? I'm concerned the brightness and UV radiation might damage the sensor. I would have the shutter at a very small angle but I realize since it's an electronic shutter, the sensor will still be exposed to the intense UV light the whole time.



Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: June 29, 2018, 08:50:21 AM »
Your footage is amazing! Did you follow the first rocket manually or do you have a jig with some kind of actuator that pans the camera?

Here are two videos I took off of my set up filming rockets at the Spaceport Americas Cup.  This one pitches and follows the rocket and shoots at the default 1,057 fps.

This fixed mount is located near the top of the rail and shoots around 2,000 fps.  I hope to post how this camera was protected in the near future.

I'm impressed with the performance of the CHronos cameras.  They ran about 10 hours in 107F/40C temperatures and had no difficulty with them at all.


Software Dev / Re: Updating the UI: Input Methods Edition
« on: March 27, 2018, 09:03:05 PM »
I haven't been following these threads but just looking at the black/white layout with small font hurts my eyes... I hope you'll keep the buttons gray with bold writing. It looks much cleaner IMO.

I do like the big numeric keypad with the microsecond and millisecond keys for changing exposure and frame rate. This will help.

Chronos User Discussion / Re: Chronos 1.4 RAW conversion tool - pyraw2dng
« on: February 20, 2018, 07:38:27 PM »
Wow, that's dramatic. Really dramatic. I've never shot raw before but I'm going to take the plunge, 100%.

Software Dev / Re: Updating the UI
« on: February 08, 2018, 06:20:48 PM »
How hard would it be to allow the user to select which buttons we want and how they're arranged? For example, I will typically shoot in one location for several hours, so I don't need the WB button to be on the main screen. However, I'm always changing resolutions and frame rates, so I like the black cal button to be on the main screen as I use it all the time. But other users might have a different work flow. 

Trying to find a one-size-fits-all UI will be tough as everyone works differently; customization will alow you to keep everyone happy.

Having all the buttons on each screen by default, then allowing the user to remove the buttons they don't need frequently and make them accessible through a "menu" button would work well.

I think the seek bar should be customizeable as well - either at the bottom or on the right. Some users shoot with a 4:3 or square frame (scientific applications) and for them the seek bar on the right gives more real estate for the video frame. I mostly shoot in letterbox type frames so a seek bar on the bottom would work for me, but again, not for everyone.

As for the jog wheel, in the playback menu it has a function, maybe in the record menu it could be clicked to switch between exposure and frame rate, then rotated to change these? with perhaps press and turn for faster changes?

Alternatively, for users with gloves the jog wheel could be assigned strictly to cycling between buttons by turning, and pressing buttons by pressing. This would allow use without the touch screen.

Chronos User Discussion / Re: 2nd battery
« on: January 21, 2018, 11:15:18 PM »
I have an ebay battery that has slightly better life than the one that came with the camera, and fits perfectly in my early bird unit.

It's labeled model no. : CS-ENEL4
and the label has "Cameron Sino" for a brand.
It has a stated capacity of 1800 mAh.

I believe this is it:

Hope it helps some of you. Not the best battery but it fits the camera very well and is inexpensive.

Software Dev / Re: Software V0.3 Beta
« on: December 25, 2017, 03:45:53 PM »
I'm trying to reproduce the issue right now but no deal. The camera was cold (10 degrees) at the time I originally had the issue. I was just messing with the camera so I didn't get any footage. I'll try to put it in the garage for a while and let it cool down, and see if it does the same thing when cold.

On another note, is reducing minimum vertical resolution below 96 pixels on the docket for the next update?

Software Dev / Re: Software V0.3 Beta
« on: December 24, 2017, 03:43:11 PM »
I'm having a minor issue after the update - when I use very low resolutions, especially 336x96, I get one flashing horizontal brown line near the top of the frame and one flashing blue line near the middle. These show after a black calibration. I'm assuming this has to do with the RAM temperature - I sometimes had the flashing line issue in the past running previous firmware versions but it was always resolved by performing a black calibration. Now black cal doesn't eliminate the lines.

My camera is serial #18 running software version 0.3. I do have an edited resolutions file, I'm not sure if this would cause any issues?

Software Dev / Re: Access OS card with Windows PC?
« on: December 24, 2017, 12:55:42 AM »
I can provide some help here David (returning the favor :-)

I input 620x320 by mistake originally, which is invalid. (Normally selecting 620 pixels in-camera rounds off to 624). It did appear in the drop-down menu but I couldn't select it. the frame rate displayed next to it was something ludicrously high like "56...34264" or something to that effect.

I have 512x288, 448x240, 336x192 and 336x96 in my drop-down menu and they all work with software v0.3! My unit is one of the early bird ones. Maybe the bug only appears in some cameras?

I should also mention I really like the improved save speed inV0.3. It's going to really improve battery life for me - much less time spent saving. The next improvement I'm looking forward to is going above 38Kfps. I don't see much interest for it but hopefully there is enough to implement it!


Software Dev / Re: Access OS card with Windows PC?
« on: December 23, 2017, 10:56:55 PM »
There are two partitions, a FAT32 for boot and an EXT3 for the Linux OS. You need to access the card from a Linux system to see the second.

Thanks David, EXT3 was the keyword I needed! After a quick search I found a program called Paragon ExtFS for Windows which allowed me to access the partition and open the resolution file in Windows 7. Thanks again!

What other company gives customers this level of service? None that I can think of.

Edit: thanks Tretee for the notepad++ link as well, it opens the file with each resolution on its own line rather than notepad, which shows it as a string of numbers.


Software Dev / Re: Access OS card with Windows PC?
« on: December 23, 2017, 07:57:19 PM »
Tetree - I do see some files but no folders. David told me to look in /opt/camera/resolutions to find the text file in question, however I see no folders. Hidden files and folders are turned on. All I see on the micro SD card is:
I've installed notepad++ as you recommended but all the files I listed above appear as lines of gibberish. It seems I'm not seeing all there is to see on the card.

Any other ideas?


Software Dev / Access OS card with Windows PC?
« on: December 23, 2017, 02:29:20 PM »

Please forgive what is probably a really dumb question -

I want to edit the drop-down list of resolutions/frame rates on the main record settings screen. I don't have a linux machine available to access the contents of the OS microSD card on the camera, so I'm wondering if any 3rd party applications are available for PC to access and edit this type of file. I don't know what the extension is. I have zero experience with linux.


Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: December 04, 2017, 06:59:40 PM »
Here are more blast waves in slow motion at 8250 and 7400 fps, one hitting a snowman and the other some propped up dry plant stems.

Some of you may be reminded of the artificial forest created in Nevada in the 50s for one of the atomic tests :-)


Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: November 20, 2017, 11:18:00 PM »
Various shots of bullets being fired and striking a variety of things:

An explosion at the water's surface 3,400 fps - re-creation of the crossroads-baker atomic test shot ;-)

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