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Messages - John DeLonghi

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1
Chronos User Discussion / Re: Let's talk lighting
« on: July 17, 2018, 02:56:45 AM »
Anyone tried these lights. I hope it doesn't flicker

https://www.amazon.com/gp/product/B01NCJSK5V/ref=ox_sc_act_title_1?smid=A25BIGUW7MK12R&psc=1

I am planing to buy two of these lights in additional to my Godox. Yes I only do macro shots and hopefully it works ok

Look at the power consumption - 40W @12-15V. That's not going to be a bright enough light for our needs.
It's maybe similar output to the Godox LED500.
I've got a Godox LED1000 and I don't find it much use for high speed work other than maybe using it as a weak fill-in.

2
Software Dev / Re: Improving the Jog Wheel, ideas.
« on: May 14, 2018, 03:11:39 AM »
I think it'll not be very pratical to select a value from a menu each time you want to switch it, I much prefer to set the values once and be able to switch between them with just a click.

Fair enough! Then I would suggest the following based on all the above:

Clicking the jogwheel will switch between the following speed settings:

- Single-step
- Slow
- Normal
- Fast

The textual representation of the currently selected speed would be displayed somewhere on screen during playback such that one gets feedback on what the current setting is when pressing the button.

The % settings for each such mode would have a reasonable set of defaults based on testing, but could optionally be fine-tuned in the camera settings somewhere if one wants to have more fine-control over those speeds.

Having those textual representations will make more sense to the average user, while still being able to be fine-tuned in camera settings if desired (to whatever granularity needed).

Good way to improve it.

3
Software Dev / Re: Software V0.3 RC1
« on: May 08, 2018, 02:06:27 AM »
I got the same first frame issue with 0.3 RC1, but it's no big deal to edit out for now.

I haven't seen the corrupted random frames yet, but I did notice a colour shift in a few frames in one sequence I was unable to explain, so maybe that's related?

4
Software Dev / Re: Software V0.3 Beta - Updated May 3 2018
« on: May 04, 2018, 07:32:49 AM »
I white balanced and black levelled both just before shooting each clip but it does look different. I'm going to do a few more tests to see how the WB is affected.
I've now had a chance to carry out some correction to both clips and once I correct WB and bring the level up on the 0.3.0 clip, they look pretty similar.

The lighting and lens settings were the same for both clips BTW.

A bit later I'll post the videos.

I'd be interested to know why there seems to be a pink cast in the raw image even though I set WB.

From the above, it's obvious that raw is still the way to go if you want the best possible results, but I suppose that will always be the case.
It would be good if the H.264 image could be a bit brighter and sharper. I find that more of an issue than colours being a bit off.

Anyway, here's the video straight out of the camera using the 0.3.0 firmware and saving in H.264:

https://youtu.be/eBRqvvl5TdM

and here's the version put together from the RAW frames with a bit of tweaking to show the ultimate quality:

https://youtu.be/IQM21j73wO4

5
Software Dev / Re: Software V0.3 Beta - Updated May 3 2018
« on: May 04, 2018, 04:49:25 AM »
These are framegrabs shot with the same setup just the firmware is different.
Scene lit with 5500K panel, settings were 1280x1024, 50% shutter.
H.264 @ 2bit/pixel
WB and BL set just before each recording

Ver 0.2.5:



Ver 0.3.0 RC1:



RAW frame (no processing done other than convert to .png):


6
Chronos User Discussion / Re: Is there a chronometer option?
« on: May 01, 2018, 08:55:27 AM »
Usually this is something done in editing, but I don't know how much experience you have of that side of things. You will also need to know the frame rate you shot with in order to make the onscreen clock accurate.

I can see how it would be quite useful to have a function built into the camera which burns the frame number into the video as an option, but I suspect it's not high on the list of things to do, so if  I were you I'd learn how to do it in post.

7
Chronos User Discussion / Re: Type of RAM
« on: March 22, 2018, 05:54:33 PM »
1 x 16, so get another 16 to upgrade to 32

8
Chronos User Discussion / Re: Type of RAM
« on: March 17, 2018, 06:29:02 AM »
For anyone in the UK looking for a RAM upgrade, MrMemory has the correct modules. I've upgraded both of my cameras with them and no problems at all.

https://www.mrmemory.co.uk/all-products/16gb-ddr3-pc3-12800-1600mhz-204-pin-sodimm

9
Chronos User Discussion / Re: Type of RAM
« on: March 16, 2018, 07:15:12 AM »
You take the 4 bolts out from the back, carefully disconnect the 3 ribbon cables so you can separate the display from the body.

Then take 4 screws out securing the main PCB from the body.

Carefully disconnect the 2 (i think) ribbon cables linking it to the main sensor PCB and then you'll have full access to the memory module connectors on the other side of the main PCB.

It's not difficult as long as you're careful with the ribbon cables and their connectors. If you are unsure how the ribbon cable connectors work, ask here first or do some googling.

10
Chronos User Discussion / Re: Type of RAM
« on: March 15, 2018, 11:42:37 AM »
This is what David has said before:

"while opening the camera doesn't void the warranty, damage due to improper user repairs isn't covered."

So, upgrading the RAM won't void anything but you need to be sure you are using the correct module(s) and you don't damage anything.

11
As long as you've installed Python as David details, the easiest way is to create a folder on your PC, copy the pyraw2dng.py file and your .raw file from the Chronos into it, then create a batch file to run it.

I've attached an example .bat file you can use.

So, in the folder you should have test.bat, test.raw and pyraw2dng.py. Edit your .bat file with a text editor to get the resolution and raw filename correct then just double click the test.bat file and it should run.

12
Quote from: patrickrebstock
how do you execute the script can you post screenshots for us not familiar with terminal?


Are you PC-based?

13
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: March 03, 2018, 08:49:56 AM »
A couple of new clips taken recently to test out RAW mode capture:

A black powder cannon:

https://youtu.be/Pvo1mEXXQ2s

Snow on a holly leaf:

https://youtu.be/rnCRfNZI0lE

A snowflake:

https://youtu.be/cDkK7L4CzS4

(Yes, we've had some snow here!)

14
Software Dev / Re: Updating the UI: Record Settings Edition
« on: February 28, 2018, 10:23:05 AM »
Something which might help those of you worried about 'fat finger' syndrome...

(This also helps when outside in the cold and wearing gloves).

I had one of these I got originally to use on an old smartphone which had a terrible touch screen. I've now got a better phone, so this was lying around and I thought I'd try it with the Chronos. 

https://www.amazon.com/AmazonBasics-Executive-Stylus-Touchscreen-Devices/dp/B008ULX012/ref=sr_1_5?s=wireless&ie=UTF8&qid=1519842118&sr=1-5&keywords=Touch+Screen+Stylus+Pen

It works a treat, so much so that I've tethered it to the side of my Chronos so it's always to hand.


15
Chronos User Discussion / Re: Chronos 1.4 RAW conversion tool - pyraw2dng
« on: February 28, 2018, 08:13:25 AM »
I've now managed to get over the 4GB limit using the method Dan D found, but on a Windows 10 PC.

If you want to save RAW files larger than 4GB, here's what you do:

Download and install the free utilities 'MiniTool Partition Wizard Free' and 'Ext2Fsd'.
Format a USB stick or SD card as EXT3 using MiniTool Partition Wizard. I've used a 128GB USB stick successfully.
Plug it into the Chronos and select it in the Save Location dropdown. If it doesn't appear, something's gone wrong with the formatting of the drive.
Record and save to the EXT3 drive (when you get the 4GB warning message just tell it to save anyway.)
When finished saving, plug the card/stick into your PC and use Ext2Fsd to copy the contents to an NTFS drive. 

I just did this with a 21GB recording. It took 47 minutes to save to the stick, but we know it's going to be slow at the moment.
The main thing is it worked I don't have the 4GB limit any more.

I think I better free up some hard drive space now  ;D

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