Author Topic: Chronos 1.4 Footage Thread  (Read 1518 times)

DerpykV

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Re: Chronos 1.4 Footage Thread
« Reply #15 on: June 18, 2017, 03:01:44 PM »
I haven't seen any steady lines like those shown above but occasionally I have seen light/dark bands that will move vertically as the exposure time is adjusted. I'm not sure if they are associated with any particular resolution or frame rate but I'll see if I can reproduce it.

How about some electrical arcs crawling across and through wood:
http://i.imgur.com/zp64MPy.gifv
http://i.imgur.com/IfF5Kxe.gifv

The line is there for most shots over 15Kfps, It is most noticeable in low light situations. As long as you have plenty of light it shouldn't be an issue. We do hope to have the bug fixed in the next software release.

- Max

tesla500

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Re: Chronos 1.4 Footage Thread
« Reply #16 on: June 18, 2017, 03:09:22 PM »
I haven't seen any steady lines like those shown above but occasionally I have seen light/dark bands that will move vertically as the exposure time is adjusted. I'm not sure if they are associated with any particular resolution or frame rate but I'll see if I can reproduce it.

How about some electrical arcs crawling across and through wood:
http://i.imgur.com/zp64MPy.gifv
http://i.imgur.com/IfF5Kxe.gifv

Nice gifs dude! I want to make one of those but scared I'll shock myself to death. Want someone who knows what they are doing to make me one lol.
Anyway here is a video of what's going on guys - https://www.youtube.com/watch?v=n7jFQWE8b28&feature=youtu.be

In the first part I just lower the aperture to make the lines more visible, there is one permanent dark line, one lighter line, and then the bugged shutter line.
After the text, I am simply moving the shutter to show the moving line bug.
Help? It sort of makes lower resolutions unusable currently.

I had one sensor that had a problem like this, but it was quite obvious, I sent that sensor back to Luxima for evaluation and am waiting to hear back. This camera may have a similar problem but not as bad. I'd like to swap your camera out for another one and investigate the issue, especially to figure out a way catch these problems in production.

oakwhiz

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Re: Chronos 1.4 Footage Thread
« Reply #17 on: June 19, 2017, 02:17:53 AM »

PaulBryanTV

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Re: Chronos 1.4 Footage Thread
« Reply #18 on: June 19, 2017, 03:56:45 AM »
I had one sensor that had a problem like this, but it was quite obvious, I sent that sensor back to Luxima for evaluation and am waiting to hear back. This camera may have a similar problem but not as bad. I'd like to swap your camera out for another one and investigate the issue, especially to figure out a way catch these problems in production.

Sure dude, message me on Facebook.
There are 2 permanent lines, mostly noticeable in lower light, one dark line and one lighter, both about a 3rd from bottom / top.
Also here is a more complete waterballoon video, 2 minutes of it, bless her!
https://www.youtube.com/watch?v=k61bIRNfkmo

JamesB

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Re: Chronos 1.4 Footage Thread
« Reply #19 on: June 19, 2017, 05:03:05 PM »
Funny how both the dark "Spotting" non-linear pixels and the black lines both show up in under exposure. Could it be that it is the same problem that a 3 point calibration could solve?

I have seen the lines myself at high shutter speeds and could be some AD problem from the readout timing.

tesla500

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Re: Chronos 1.4 Footage Thread
« Reply #20 on: June 19, 2017, 05:41:26 PM »
Video card that had an odd failure, causing it to catch fire on power-on

https://www.youtube.com/watch?v=MbCxC5N2mQM

JamesB

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Re: Chronos 1.4 Footage Thread
« Reply #21 on: June 19, 2017, 05:59:05 PM »
Now that is troubleshooting!  They should send the link to the OEM

gyppor

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Hitting nails, very high frame rates!
« Reply #22 on: June 19, 2017, 10:02:35 PM »
Being able to go well above 1000-1200fps (where my two other cameras maxed out) seems to open up entire new worlds, there are so many things to film right at home. I love it, hours and hours of fun. I still feel like a kid on Christmas eve.

Hitting rusty nails with a hammer, filmed at 13,000-38,500 fps. Lighting was not optimal, there was cloud cover so I had to use a bit of gain to make things look ok. The shots turned out decent despite the exposure being just 26 microseconds in the last shot.

Taken with the computar lens from about 1m away.

https://youtu.be/znZG2JcAKrM

g

nik282000

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Re: Chronos 1.4 Footage Thread
« Reply #23 on: June 20, 2017, 03:41:37 PM »
Video card that had an odd failure, causing it to catch fire on power-on

https://www.youtube.com/watch?v=MbCxC5N2mQM

I wonder if it is related to https://en.wikipedia.org/wiki/Halt_and_Catch_Fire.

nik282000

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Re: Chronos 1.4 Footage Thread
« Reply #24 on: June 20, 2017, 08:20:14 PM »
All three of these shots were with a 135mm f2.8 from the 70's. The softness in the first two is from having the aperture wide open and having a lot of glare from behind and beside the subject. The last clip shows off how sharp the Chronos 1.4 can be with the right lenses and lighting. Thanks David!


https://youtu.be/nwI2mGTo_gk

PaulBryanTV

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Re: Chronos 1.4 Footage Thread
« Reply #25 on: June 21, 2017, 09:41:46 AM »
All three of these shots were with a 135mm f2.8 from the 70's. The softness in the first two is from having the aperture wide open and having a lot of glare from behind and beside the subject. The last clip shows off how sharp the Chronos 1.4 can be with the right lenses and lighting. Thanks David!


https://youtu.be/nwI2mGTo_gk

Already dropped a comment and like, keep it up! Enjoy seeing peoples test footage.

PaulBryanTV

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Re: Chronos 1.4 Footage Thread
« Reply #26 on: June 23, 2017, 07:34:35 AM »
Forgot to post this here...don't judge me! lol
https://www.youtube.com/watch?v=TNJlaCf9FKU

tesla500

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Re: Chronos 1.4 Footage Thread
« Reply #27 on: June 23, 2017, 11:44:04 PM »
Lauri from HPC/Beyond the Press took what is currently my favorite thing ever shot on Chronos:

https://youtu.be/U8R0txBYayg?t=288

I love how the garbage can changes color for a few hundred microseconds before breaking and reverting to the original color.

PaulBryanTV

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Re: Chronos 1.4 Footage Thread
« Reply #28 on: June 24, 2017, 08:08:15 AM »
Lauri from HPC/Beyond the Press took what is currently my favorite thing ever shot on Chronos:

https://youtu.be/U8R0txBYayg?t=288

I love how the garbage can changes color for a few hundred microseconds before breaking and reverting to the original color.
I agree, I love that shot! I've got a few lenses coming soon that will give me some more range of motion for stuff to record in interesting ways!
Want to work with ballistics and explosives a bit more now that we can comfortably achieve frame rates that show the characteristics of them in slow motion.

Critters

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Re: Chronos 1.4 Footage Thread
« Reply #29 on: June 26, 2017, 12:00:14 AM »
If Krontech are going to the effort of making a high speed camera portable... would be a shame to not take it to the streets
https://www.youtube.com/watch?v=C3FjvNL0UCU