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Messages - tesla500

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16
I would recommend a maximum ambient temperature of 40C. You can check the internal temperature on the About tab in the Util window, as long as the System and Image Sensor temperatures stay under about 70C you should be fine.

The camera has over-temperature protection, it will simply turn off if it gets too hot, but the image quality will degrade slightly while it's hot. The warmer the sensor, the higher the image noise. This isn't permanent, it will go back to normal when it cools down.

David

17
You can use the m2 SSD on the top of the camera and they may not cover the screen

Good idea, did you make a setup using one of these?

18
This is an SSD holder for the Chronos 1.4 and 2.1-HD. This accessory is invaluable when shooting DNG on the go; save speed is vastly improved compared to an SD card. The camera can write about 60MB/s to a SATA SSD instead of ~12MB/s to most SD cards. DNG saves at about 12FPS on the 2.1-HD and about 18FPS on the 1.4, at full resolution.



We plan to offer this for sale in our store eventually, but you can 3D print one right now! The attached models have been updated from the pictures shown, the SD card opening was widened so you can easily grab an SD card with your fingers instead of needing pliers to remove it.

We're in the process of ordering custom versions of the eSATAp cables that have a short cable length to avoid the need to coil up the extra cable.


Items you'll need



3D Printer to print the SSD cage (see attached files)

3D Print Instructions
This file has been tested on the Makerbot Replicator 2X
Recommended settings:
Print with raft, raft expansion 12mm
Print with supports
Orient the part with the drive opening pointing straight up

We've been using these at Krontech for the last few months and these mounts are incredibly useful, let us know how they work for you! One modification we were thinking about is centering the SSD above the camera. Currently, it overhangs the screen and makes it harder to see if you're looking from an upward angle. Thoughts?

19
Chronos User Discussion / Re: Post Chronos 2.1 clips here!
« on: February 17, 2020, 03:14:21 PM »
Had some fun over the long weekend vacuuming sawdust

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

20
Chronos User Discussion / Re: eSATA 3G interface
« on: February 13, 2020, 11:34:24 PM »
If you get an eSATAp cable, you can power the drive with just one cable

You can find an example of this cable here. We also sell these on our web store.


21
Chronos User Discussion / Re: Chronos 2.1 newbie questions and impressions
« on: February 13, 2020, 01:20:15 PM »
If you want to do a speed ramp, an Arduino would work, as would pretty much any programmable signal generator. You need to generate a TTL pulse for each frame capture.

You mentioned wanting to trigger a studio flash on every frame, which one did you have in mind? Most studio flashes I know of can only fire at a rate of a few Hz or maybe tens of Hz at most, with a low flash power setting, not the kilohertz rate needed for this application.

The battery gauge isn't the most accurate, and will decrease quite quickly at the start of discharge then slow down later. The battery should last 1 hour before the camera shuts down. I just tested mine and it ran for 1 hour and 5 minutes. How long were you seeing until the LED on top starts flashing red? It's possible your battery is defective.

David

22
Chronos User Discussion / Re: Post Chronos 2.1 clips here!
« on: February 13, 2020, 10:48:20 AM »
I've never heard of dB gain when talking about video recording, what does this mean exactly?

dB is decebel, a way to measure two relative signal strengths. In this case, 6dB of gain is equivalent to 1 stop, or a doubling of sensitivity. So 24db is four doublings, or 16x gain.


Thanks!I dont know what is the Max Setting, but 24dB Still looks more than ok!Looking great.

I find that 24dB gain on the 2.1 is about the same apparent noise as 0dB gain on the 1.4, the new sensor is really phenomenal with respect to noise!

23
Chronos User Discussion / Re: eSATA 3G interface
« on: February 13, 2020, 10:44:26 AM »
The eSATA interface is 3Gbps, so second generation.

Due to CPU limitations, the real-world write speed when saving DNG will be about 50-60 megabytes per second to a SATA SSD.

24
Chronos User Discussion / Re: Chronos 2.1 lenses
« on: February 12, 2020, 04:45:30 PM »
It may look rather weak but the C mount is quite strong. As Simon said I've used large 1kg+ lenses without issue, including dropping a camera with a ~900g F mount lens attached about 1.2m onto concrete, and the lens mount held up just fine.

Obviously, don't do anything remotely high-G with lenses like this, but for general use they will be just fine.



25
Chronos User Discussion / Re: 11 second chronos 2.1 clip
« on: February 12, 2020, 03:15:36 PM »
I would love to have that 2.1 * ___ *

As soon as there is a European sales office so that customs duties are eliminated, I will get one too!

We're looking into expanding and having offices in other countries, but sadly that won't eliminate the VAT you need to pay. For most countries, the bulk of the import fees are VAT rather than duties, so cameras sold in Europe will need to have VAT added to the price before sale just like pretty much anything else that's sold in Europe.

26
Chronos User Discussion / Re: Chronos 2.1 lenses
« on: February 07, 2020, 07:17:45 PM »
Here are some lenses I highly recommend. We've been using them for taking promo videos and they work great. All of these lenses have proper built-in manual aperture controls that will work with the included Nikon-C adapter.

Nikon ED AF-S Nikkor 28-70mm 1:2.8 D
Best general purpose zoom lens we've used so far, equivalent to 14-35mm on the Chronos 1.4. Out of production but readily available on the used market.

Nikon 80-200mm f/2.8
Longer general purpose zoom. Equivalent to 40-100mm on the Chronos 1.4. If you're used to the zoom range of the Computar 12.5-75mm on the 1.4, the combination of this lens and the one above will duplicate that functionality, with a bit more zoom to boot.

For prime lenses, Rokinon makes a nice series of prime lenses and Cine lenses with manual aperture controls, any of these will suit the 2.1-HD very well. They have wider apertures than the zooms, especially in the ~35-70mm range. The pricing is very reasonable, most are in the $400-600 range

Here are more zoom lenses with f/2.8 or wider apertures. We havn't tried these ourselves, but as long as they have manual apertures they will work fine.

The 2.1-HD has a 4/3" image sensor, so the crop factor is 2:1 from full frame. You can use the Computar 12.5-75mm on the 2.1 up to about 1024x768 resolution or so (about half of full res) before it starts to vignette.

27
Chronos User Discussion / Re: Bad Image Quality
« on: December 10, 2018, 12:23:37 PM »
Hi, I'm new to the community.

I just got my new Camera, and out of the box the image quality was really bad.
After doing some adjustments with the shutter speed (max)/ resolution (max)/lens/ black calibration, it got better but it's NO where close to what I see posted on YouTube from everyone here.
Also the save footage is always way darker than whats on the display of the camera but that's possibly fine from what I read on the forum posts here.
Lastly the saved footage has somewhat of a black frame flicker effect, not sure what's happening here.

I'm currently of software version 0.3.0


I would seriously appreciate any help/ thank you in advance! :)

Hi Oli,

Please post an example image and/or video showing the problem. As others have said, it's very hard to tell what's wrong without seeing an example.

David

28
Chronos User Discussion / Re: Can no longer do backfocus adjusment
« on: November 20, 2018, 07:38:04 PM »
Solved via email. In case anyone else has this problem, the solution was to loosen the backfocus lock screw to ensure that the brass rod had enough clearance to allow the CS ring to be screwed into the proper depth.

29
Can you save video successfully to the storage device that has the update on it? Does the drive show up in the drive selection box in the save settings window?

30
Chronos User Discussion / Re: Waterproof/weatherproof enclosure?
« on: October 19, 2018, 04:09:49 PM »

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