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Messages - rdemyan

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Chronos User Discussion / Re: Static IP Address
« on: July 25, 2020, 10:26:40 AM »
I was able to solve the immediate problem of not being able to save recordings.  I found the misplaced SD card and inserted it into the 1.4 camera.  I then formatted it and the camera was able to save to the card.  I guess any other storage device that has already been formatted (even if that format is FAT32 or the other supported formats) will not work.  Hopefully someone who knows more will chime in and provide more information on this topic.

With regards to running the web based GUI without an internet connection, I was not able to do this.  I did try using a network switch which did help if and only if the switch also had an active internet connection.  I think I was able to assign a static IP address, but that too did not work unless there was an active internet connection.  The only time I could bring up the web page and have the web page recognize the camera was when the switch also had an active internet connection.  Again, hopefully someone has more information on this as I was hoping to control the camera using the web page but without an active internet connection.

Chronos User Discussion / Re: Static IP Address
« on: July 25, 2020, 08:59:13 AM »
I tried using a switch.  As expected, it works if there is an internet connection. Once the Chronos has an assigned IP address, the internet connection can be removed and the webpage on the computer still works.

However, if the router or camera is turned off or if the network cable from camera to router is removed, then the camera IP address is lost and the webpage does not recognize the camera.

Would assigning a static IP address solve this issue?

Chronos User Discussion / Re: Static IP Address
« on: July 25, 2020, 08:20:25 AM »
Thanks, I'll give that a try.

While I am pleasantly surprised at how quickly I was able to start recording video, I am equally dismayed by my inability to save recordings.  I have tried everything I can think of, but nothing works.  Unfortunately, I misplaced the SD card that comes with the camera.  However, I have tried to connect a hard drive and also tried a thumb drive.  The camera recognizes that the drives are attached, but always throws up an error message when I try to save.  When using the camera interface to save, the message is almost always "Save Folder does not exist".  When I've been able to use the web page, either nothing happens after clicking "Save", when a hard drive is attached, or the message is "Recording failed. Read-only file system", when a thumb drive is attached.

I also tried inserting the SD card from my Nikon camera, but the Chronos does not recognize that it is inserted.

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.

Chronos User Discussion / Macro Video
« on: July 14, 2020, 08:30:27 PM »
I would like to do some macro work with  the monochrome version of the 1.4 (which I should receive any day now).

Will the following lens work?

computar C-Mount 13-130mm Varifocal Lens

Listings say that it is compatible with 1/2" cameras and uses a C-mount.  I assume the 1/2" is the sensor size, but I'm not sure.


What is the sensor size of the 1.4 Monochrome version?

Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: June 22, 2020, 04:31:27 PM »

I'm planning to buy a Chronos 1.4 black and white to video water sprays and similar.  I really enjoyed watching the video you posed at the beginning of this thread of water hitting a spoon and then spreading out.  What frame rate did you  use?


Chronos User Discussion / Re: Extracting still images
« on: June 22, 2020, 03:55:42 PM »
Thanks.  You are someone who has decades of hands-on experience, whereas I am a total novice.  I don't want to damage my lens by trying some of these things.

I could still try the to use extension tubes with my lens on the Kronos 1.4, couldn't I?

Chronos User Discussion / Re: Extracting still images
« on: June 22, 2020, 03:38:30 PM »
Yes, thanks for the explanation.

What about setting the Fstop if I use a retroadapter?  How am I going to do that since the lenses I have do not have aperture rings?

Here's a video of a guy who compared the Raynox DCR 250 with extension tubes and with a macro lens.  He thinks the sharpness is very good, although the macro is a bit sharper.

Chronos User Discussion / Re: Extracting still images
« on: June 22, 2020, 01:55:28 PM »
Interesting that when googling the retroadapter ring, most of what comes up is from Germany.  Even on American eBay I only saw these rings, by themselves, sold from Germany. Further, virtually all of the videos  explaining the concept that result from a search are in German. Not that it matters, just curious if American sellers do not support this type of ring or is there some other reason. 

Anyway, I watched a German video where the guy compared this retroadapter ring with the raynox dcr-250. I understood most of it although I'm not familiar with  most of the "camera-specific" German words.  If I understood correctly, the raynox dcr-250 just snaps onto the front of the lens and does not mess with the contacts, so I can continue to set the aperture as I do now.  The retro adapter requires the lens to be reversed, which seems strange, but I guess also means that I will have an issue with the aperture since my 50 mm lens does not have an aperture ring.  What's your opinion of the raynox dcr-250?  Below is a link to the video I watched.

Chronos User Discussion / Re: Extracting still images
« on: June 22, 2020, 12:36:05 PM »
Hi Nikon1:

I will most likely be buying the Chronos 1.4 (black and white) in July.  Which lens do you recommend for my needs.  Is there an adapter that will allow me to use the Nikon 50 mm prime that you recommended for my photo camera and which I do have.  As you know I need sharp images.

Also, do you have any recommendations for video editing software that provide excellent sharpening and noise reduction.


Chronos User Discussion / Re: Extracting still images
« on: June 22, 2020, 12:01:56 PM »
Hi Photopage:

Sorry for the late reply.  Thanks for taking the time to try to verify the exposure.

In looking at the pictures, I am confused.  If each still is one microsecond exposure, why aren't the images much clearer.  In looking at the images, I have no idea what I'm looking at.


Software Dev / Re: Chronos V0.4.0 Beta - Debian and Networking
« on: May 02, 2020, 09:59:24 AM »
"The shutter speed can be set regardless but the issue is the amount of light required. David said figure 7 Lux per FPS. I presume thatís at 360 deg shutter so even way more light at higher shutter speeds. As long as the file remains on github, you can use it. Download it now and save it in anticipation of getting a camera. Iíll check and confirm tomorrow."

Thanks.  I reread this thread and it looks like the Voyager release on 3/31/2020 supports a minimum vertical height of 32.  I'm not sure, but I think that corresponds to a 109,000 fps when the horizontal is 320 or maybe it is 336.

Software Dev / Re: Chronos V0.4.0 Beta - Debian and Networking
« on: May 01, 2020, 01:32:03 PM »
If I buy a Chronos 1.4 camera now and receive it in a month or so, will the "unstable" version still be available so I can film at 109,000 frames per second?  Also, it is critical that I have an exposure time of around 1 microsecond.  Can the exposure time be set to around 1 microsecond throughout the entire range from 1000 fps to 109,000 fps?

Chronos User Discussion / Re: Extracting still images
« on: May 01, 2020, 10:13:54 AM »
"The 2.1 can shoot with exposures down to a micro second.  I just tested it."

I've pretty much decided that I am going to buy one of the cameras.  The datasheet for the 2.1 says that the minimum exposure time is 10 microseconds and not 1 microsecond.  Would you please confirm that you were able to get 1 microsecond?

Also, is the fps really limited to 24,046 per the datasheet?  It seems odd for a higher resolution camera and given that the initial announcements for the 2.1 said the camera would be able to shoot 100K fps.


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