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Chronos User Discussion / Re: Serial numbers.
« Last post by NoDak on December 02, 2017, 09:43:05 PM »
I always thought it funny that they chose the number 42, given its significance and meaning in Jewish numerology
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by hydraulicpresschannel on December 02, 2017, 12:19:29 PM »
We were filming somethings couple weeks ago with big and expensive phantom camera but the chronos footage turned out also surprisingly good on this 5 meter long stick of dynamite video

The chronos footage starts on 8:20

I was wondering, What model phantom were you filming with? I recall you saying "the best one" Would that be a v2512?


Yep it was v2512 with fast option and larges memory. Only problem was the finnish weather and short day :D But I got funding for the camera with really short notice and it's just couple days in country when you order that so you get the weather that happens to be on filming day. We actually filmed this week also one day with the thing since one of my friends customer needed 80 000 fps camera so they had to rent that one again and they needed it only for one day and I got the second day really cheap since minium rent period is two days.

This time we did some DIY shaped charges and 70 litre gasoline bomb :D The shaped charges looked quite nice with the phantom but I got also really nice clip with the chronos from gasoline bomb. I am publishing that video tommorow and I can add link here when it's out.

But in generally I think that the v2512 phantom and chronos are good match for youtube videos. You can take clip from small details with really high frame rate with the phantom and then wider shot with chronos with speed aronud 1000-3000fps. I am probably filming next time when it's bit more light or if I get somebody else to pay for the phantom.

I think this is also really nice shot
It's the same reaction filmed with two chronos cameras, color version and black and white. I had color version recording 500fps to get more light and black and white little bit faster. I think I could do better now since this was my first video with the black and white model and I didn't know how to exactly set it up to get best possible picture.
Software Dev / Re: Improving the Jog Wheel, ideas.
« Last post by patrickrebstock on November 29, 2017, 06:01:26 PM »
jog wheel for exposure  shutter speed changes during standby, or even while recording
Software Dev / Re: Software v0.3?
« Last post by patrickrebstock on November 29, 2017, 12:35:28 PM »
The next version is being worked on right now. Features in this coming version are:
  • Remembering settings across reboots (most common request!)
  • Fix for a potential cold-temperature RAM issue (seen as horizontal bands of colored pixels)
  • Autonomous operation with automatic save-after-trigger and automatic recording start after save
  • Maybe HDMI

If HDMI doesn't get into this release, it will be in the next.

Ethernet will be coming in a subsequent update, it's a big project, the entire low-level camera control needs to be broken out of the user application and made to work over network.

Also, the open source release is imminent, finally have a working build environment that doesn't have any of the NDA code in it! Hopefully within the week.

Any update on a timeframe for this update?
just wondering because the new features will effect how i have my waterhousing controls made.
so exited!
thanks David
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by Martin on November 28, 2017, 06:41:29 PM »
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.

Hey :)

Did you film using the battery or was the Chronos plugged into a power outlet there?
If it's been on an outlet: maybe there are things on the same grid which introduce small linespikes and result in such artifacts?

All the best
Chronos User Discussion / Re: Adapting other lenses to C-mount
« Last post by Martin on November 28, 2017, 06:14:14 PM »
Just fyi i went with a fotodiox EF adapter and the
Samyang 14mm T3,1 ED AS IF UMC II VDSLR lenses - works great and is a “normal” focal length.

Hey :)
Nice, I bet that lens is sharp as well! :D  AND You can get really close..
I've been testing a few Nikon lenses again but e.g. with the 85mm f1.8, sometimes, I sit 2-3 meters away from the event  :(
(but it's soo much sharper wide open, than the 50mm f1.4)

All the best! :)

I'm not familiar with the Sony lenses but if you don't need any electronic controls, I think I can make you one.
Just hunt down a physical drawing of the mount for me and I'll tackle a prototype grade mount.

 :o :o :o
 :D :D :D

Thank you very much for the kind offer!! I'm kinda speechless :)

I was a bit bummed out to learn that there were no adapters for that configuration, but I kept the lens and my next step would have been to ask every manufacturer if something like that is in the pipeline or could be made on special order..

Then there's Nathan  :D

I will try mailing the companies first, I guess..
MAYBE, I'll get lucky with one of them, which would be the easiest, most "painless" option, but I'll start hunting for those e-mount specs as well and keep you informed, progress-wise :)

Thanks again for the helping hand, Nathan!
All the best


PS: I might upload my first presentable clip soon, of things previously very fast ;)
Chronos User Discussion / Re: Serial numbers.
« Last post by tesla500 on November 27, 2017, 08:54:23 PM »
I made sure to keep the answer to everything to myself, hehe. I have 00042.

A certain space related company got 00321, and a nice signed letter from all the staff thanking them for inspiring all of us.

00009 is on my desk, being used for software development and testing.

We haven't made 00666 yet, who should that be reserved for?
Chronos User Discussion / Re: Insanely high speed slit scan method?
« Last post by AimedResearch on November 27, 2017, 08:22:45 PM »

The high-speed imaging industry uses high-speed streak cameras in the way you just described.  With the Chronos 1.4, you would run into a problem with the exposure needed to pull it off.  To get good detail to build an image from lines you would probably need 750ns exposures or faster.  Even if you ran the Chronos at the fastest exposure, you wouldn't have the light.  If you ran the camera at 1-million fps you would be forced to have a <1us exposure.

The picture I posted above was captured with a 500ns flash and a relatively inexpensive Nikon DSLR.  Projectile is exiting 6 inches of gel.  A flash unit like this could be utilized with a Chronos with full exposure at any given resolution (1/frame rate) or frame rate to capture a similar image.
Chronos User Discussion / Re: Insanely high speed slit scan method?
« Last post by Max on November 27, 2017, 08:19:31 PM »
Does it support width of less than 96px? As a vertical pixel strip of maximum resolution height with a 1px width is what most would use.
For example a side profile shot of a bullet in mid air from left to right.

If you can incorporate this in some manner I think it would be awesome. Especially for content creators and photographers in the high speed niche.
Theoretically whats the maximum fps the sensor could handle? I think if you can put even a basic test feature of this in, you'd REALLY turn some heads in the industry.
Something like a 500K fps slitscan would lead to some INCREDIBLE images being made, particularly for ballistics / explosives.

After the updates, yes it would be possible, but with speed, you will need to decrease the exposure time, so if you were to expose at half a million FPS the amount of light required for the exposure would be insane.

There is also another issue, we can't export anything easily with capability over 200,000fps because it becomes a federally regulated product, mainly because it is a tool that can be used easily for nuclear research.   :o

Sorry, misinterpreted what you said, Due to sensor capabilities we can't narrow the sensor field below 336 pixels horizontally with framerate benefits, but you can do 336x1 for a slit shot once we get the blackspace working.
Chronos User Discussion / Re: Insanely high speed slit scan method?
« Last post by AimedResearch on November 27, 2017, 08:07:42 PM »
Hi David and others!
Just wondering after reading a lot of articles online about photo finishes, is it possible to make the Chronos read out a 1x720px image at even higher speeds for stuff such as high velocity weapons etc? So we could create high res 'frozen in time' style images from the footage using something like Slit Cam?

As the bullet or projectile would travel through the horizontal axis creating a full image of itself, so we only need the vertical resolution?
Would this make the camera be able to record insanely high speeds?
Is it even possible? Just an idea.

You mean like this?: (see attachment)
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