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Messages - Nikon1

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136
Chronos User Discussion / Re: Sigma 600mm Lens On Chronos
« on: April 16, 2022, 11:35:51 PM »
Man, could probably figured that as soon, as i read about you putting a 600mm Lens on there, but of course it would only be a question of time until you would find a excuse to put gun-sights on the Camera  ;D .
 .
 Lets see how long until actual Camera Finderscope to aim your Lens  ;)
 https://www.wikiwand.com/en/Finderscope
 

137
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: April 16, 2022, 08:33:14 PM »
@B.H.V: Regards upscaling, i wonder how it would do with some Really Nasty, Busy Background or lot of Random Highlights like Water Drops and Stuff, or even worse Glitter and Stuff like That. Guess that would be about the Worst you could Throw at it. Anything with a Well Blurred out/ Soft Background and Clean Lines should do quite Well for Upscaling, especially if they keep working on it all the Time.

138
Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: April 16, 2022, 07:06:37 PM »
@B.H.V: I guess the very clear Separation from the Background helps the Upscaling Software a lot, but that is some Really Impressive Resolution, Sharpness and Especially Fidelity for that coming from a 1.4! Does also not look oversharpened like some Upscaling tends to do sometimes.

139
Chronos User Discussion / Re: Unbalanced colors in .dng, .mp4 files
« on: April 14, 2022, 11:14:53 AM »
Thanks, will have a look at that, and play with those Settings myself, if i have a bit of spare time.
 .
 I dont really think its correctly described as compatibility issues. Color Science and all the Different Color Spaces are one Hell of a Beast to tackle or even to grasp somewhat at all, here is just some Papers, explaining the very basics of it:
 https://www.xritephoto.com/documents/literature/en/L11-176_Guide_to_CM_en.pdf
 https://xritephoto.com/documents/literature/en/L11-029_color_guide_EN.pdf
 .
 Comes down to a lot of things, as Color is also a lot up to interpretation like for example just White Balance. Then also the Fact, that DNG is a RAW Format, which currently does not seem to have a Color Profile/ Preset embedded, meaning it is what the Camera actually sees, and the mp4 Compressed Output would be a lot closer to what it shows you on the Screen, as that has all Color Settings fully baked in.
 ALSO (tbf. dont know about newer ones, heard the current batches of Chronos Cameras will get a much improved Internal Screen, though i cant speak for those, as i still only know the default "Version 1.0" Screen of the 2.1 and the very original 1.4 Screen), the Screen isnt Terribly color Accurate.
 If you want to actually get displayed what the Camera Sees, use a Calibrated or at least very Color Accurate External HDMI Screen to Shoot anything (i use a 502 Bright SmallHD On-Camera Monitor, which is accurate enough for my use).
 .
 And this is not really a Issue with the Chronos Camera really, plenty of different Cameras have quite different opinions on how things look or have to look.
 Just look at Color Comparisons between Shots from Canon, Nikon, Pentax, Sony, Panasonic, and some Cine-Cameras (plenty of those Kinds of Comparisons online and on YT), when unbalanced, without any Color Matching or Color Correction done. There is Quite a lot of Subjectivity about Color tbh.
 And given, you probably usually Stick to your Brand of Camera mostly, you kind of know what you will get and what to expect from the "Look" you get from it, cause you are used to it.
 Have heard People call Nikon Cameras "Yellow Picture Camera", and not only because of the color of their Company Logo, but also because they say that their Footage and Images are way to Yellow biased, and so on.
 And Brands like Nikon do put plenty of Effort in their Color Science, and some People still complain.
 .
 If you want truly Repeatable Colors, especially between different Colors and / or in different lighting Situations, there is pretty much no way around a Color Calibration Target of some Kind, like those Color-Checkers (which i use for any Shot i do on the Chronos! have never used one ever before getting my Chronos, but with the 2.1, i kind of need to use it to get accurate Colors. Camera can and will produce very usable Results without, but color can look quite different from Other Cameras, when Shooting the Same Scene.).
 I do still hope, that Color Science at Krontech does improve Further, so you would still get something a bit closer to most Mainstream Cameras in terms of Color without using a color-Checker on every single Shot/ Light Change, but i mean for now its usable enough. Especially if you find yourself in a lot of Similar Light-Situations, you could Probably Mostly reuse the Same Settings or just make a LUT or Preset for your Color Correction if you do end up using it for Studio Lighting, and get pretty much perfect Color with no additional work other than Slapping your Color Correction on every time (gonna have to do some kind of Grading/ Color work anyways, if shooting DNG, else you would probably just go with .mp4 for Basic Footage output).

140
Chronos User Discussion / Re: Unbalanced colors in .dng, .mp4 files
« on: April 14, 2022, 08:13:09 AM »
Thanks. I have no experience with DaVinci Resolve or similar softwares but I will dig into it.

Meanwhile I was able to adjust the photo brightness and achieve similar results as shotwell by the simple script below

import cv2
import numpy as np

def change_brightness(img, value=30):
    hsv = cv2.cvtColor(img, cv2.COLOR_BGR2HSV)
    h, s, v = cv2.split(hsv)                                                                                                                                                       
    v = cv2.multiply(v,value)
    v[v > 255] = 255
    v[v < 0] = 0
    final_hsv = cv2.merge((h, s, v))
    img = cv2.cvtColor(final_hsv, cv2.COLOR_HSV2BGR)
    return img


img = cv2.imread('./frame_notadjusted.jpg')                                                                                                                                       
img = change_brightness(img, value=5)                                                                                                                         
cv2.imwrite('ColorAdjusted_py.jpg', img)

 Can you explain whatever is happening there? I on the other Hand probably know less about code than you about Editing Software, but just from looking at it, is this basically just some kind of Color Space Conversion from HSV Color Space to RGB Color Space or something? If that seems To fix the Problem you are having, that might be a clue to what is wrong in the Color Science of the Camera? would be worth looking into at least, i guess.
 Thanks however for Sharing anyways, even though i have no clue at all of what i am looking at.

141
Chronos User Discussion / Re: Unbalanced colors in .dng, .mp4 files
« on: April 13, 2022, 02:17:51 PM »
Short on time rn, so i just leave this here, hope this helps any, else just post any left over Questions again:
 https://forum.krontech.ca/index.php?topic=687.msg4734#msg4734 
(LUT is for 0.7.0, meanwhile 0.7.1 is released, in which the Color was somewhat fixed/ changed/ improved, so might not work anymore/ as well, but you can easily make you own LUT with a Color-Checker)

142
Chronos User Discussion / Re: Boot failure after OS update
« on: April 13, 2022, 02:13:35 PM »
I talked about this exact topic very recently here, maybe check this out:
 https://forum.krontech.ca/index.php?topic=755.0
 Otherwise, if the Boot Fails on a newly Flashed Card, just retry to Flash it, maybe even with a Fresh Download of the Firmware File, just to make sure the File you try to Flash with is not broken or something. If that still leads to the Same Result, try a new/ other SD-Card with the Same Capacity (not completely sure about Minimum Required Size, but i think 16 or 32GB is pretty much the Smallest ones you can get todays anyways...), because Micro-SD-Cards can and will sometimes just Fail, when you Flash a new Firmware or even in everyday use, even though its extremely rare, but can happen.
 If a new Flash on the Same Card with a Fresh Firmware File AND a new Flash on a New Card both will not work, its likely you have some other issue with the Camera, but i assume that should solve it (assuming you did nothing wrong with Flashing the Firmware, but what you linked is the Correct Procedure and somewhat hard to do wrong, so i think that should not be a Problem).

143
Chronos User Discussion / Re: Saving to Network Storage (NFS)
« on: April 11, 2022, 06:53:39 PM »
There are also these Forum Posts / Threads, which one off is still on a pretty dated Firmware version, and both seem to use Some Linux OS, from flying over it very quickly. But maybe you can get some information out of there, or if not send a Personal Message to anyone in there, that got it to work aparently.
 https://forum.krontech.ca/index.php?topic=567.0
 https://forum.krontech.ca/index.php?topic=561.0

144
Chronos User Discussion / Re: Saving to Network Storage (NFS)
« on: April 11, 2022, 06:47:53 PM »
I have absolutely no experience with Sharing Folders / Storage for this Camera or File Transfer over Network, but the closest thing i could find from a ~2 Minute Search on the Website is this:
 https://www.krontech.ca/wp-content/uploads/2021/09/Chronos-SMB-Share-Setup-Guide-1.pdf
 I hope this helps, else somebody else Please Help.

145
Chronos User Discussion / Re: First update - need help.
« on: April 01, 2022, 12:15:02 PM »
You would need to double check with the Release-Notes for each Release, but i think there isnt really much Reason to still do Backup of Camera Data (Sensor Calibration Data that is), but i personally Still keep them Around, no matter what. Better have them and dont need those Files than the Other way around i figure, but for current and Future Releases, i dont expect you will ever find yourself Needing them. Bit different for The Camera Settings Backup, as those are basically custom Settings you do to your Camera. I personally usually always put the UI on the Left and a bunch of other things, you would else need to do that by Hand for each and Every Setting (i actually dont do Settings Backup when i Flash a New Card with a newly released Firmware, and just do the Handful of Custom Settings i use on my Camera on my own, because i am Honestly just to lazy, and it seems about the Same Amount of work or even Less (there isnt THAT crazy much you could possibly customize on that Camera), just doing the Settings themselves on the Camera instead of backing up those Settings and Copying them over.).
 .
 So in Summary, for the Sensor Calibration Data, you very likely wont need that in the Future, and Settings are just however you Customized your Camera.
 Its still very nice to have the Settings Backup Option, if you for example had a bunch of weird Custom Settings on there, and tried to set something up like the Chronos Ring they did, where you tried to apply the Exact same Custom Settings to something like 20+ Cameras, that could save you a bunch of time, and would also make sure you didnt miss setting something on a Single one. For Home use with a Single Camera and some Firmware Upgrade every now and Then, there is not much of a Point using that i feel (at least not worth the Work for me personally, if you like it doing that way, well its there, you can).
 .
 But glad to hear your Update went well!

146
Chronos User Discussion / Re: Can you record audio?
« on: March 30, 2022, 09:06:59 AM »
Ahhh interesting indeed. I've a Rode external mic with a pre-amp. So I guess it should be "ok". So I could do live 60fps... though I dislike the lag that creates, I can't remember where though lol maybe when moving from save mode to the live preview. I am not sure. Humm I would mostly be recording sports so the audio isn't really a must, but interesting still to test.

Now... custom fan you say... You have peaked my interest there :D
https://forum.krontech.ca/index.php?topic=611.0
 I actually finally Managed to do a Noise-Comparison (or rather got clkdiv to do one) against a unmodified one, and was about to post that sometime soon, if you are interrested, i can just upload it right now, Let me Know.

147
Chronos User Discussion / Re: Can you record audio?
« on: March 30, 2022, 08:56:23 AM »
With 60fps Live Record Mode you can Record Audio on the current version of Firmware.
 I dont exactly know how long thats been there, but recently accidentally had Live Record Mode on, and checked the File, it does indeed record some Audio.
 Internal Mic Level is low, and also the Fan Noise usually is so loud (on mine not so much, as i replaced the Stock Fan With A much more Silent Noctua one, so even on the Internal Mic you can somewhat make out what is Happening and even hear Normal Level Conversations a bit away) that you can make out almost nothing of the Sound you are Trying to Record, except Loud Screaming and other Extremely loud Noises, and any External Signal fed into the Camera via the 3,5mm Jack needs to be Pre-Amplified, just Plugging in a Standard Microphone like on your Headset wont work. You will need some Kind of Pre-Amp or a Line-Out Signal. Camera has, from what i can tell also no built-In Audio-Level Metering, so beware of Clipping, and Run some tests as to what kind of Signal-Level the Camera wants to have to record Usable Audio (and Maybe even Consider Sharing Results, if you do).

148
General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread
« on: March 28, 2022, 04:47:18 AM »
Whatever that thing at https://youtu.be/KWYyMc_J8ZU?t=276 is, is looking Extremely Interesting. Also that Train is just such a beautiful work of art and great Skilled Builders itself. I also generally have high Respect for anyone making any Kind of Music that is longer than 3 or 4 Minutes these Days.
 While i did actually think about some more Mainstream Music, i mean this very much counts, as its mostly in Sync with the music and fits the overall Atmosphere and Pace of the Piece very well. And i guess it makes sense, Higher Framerate Slow Motion is actually quite a Extreme Effect (also people and Stuff generally only can move so fast, so there is Very much a Limit in most of the Cases to how far that could be pushed while still looking good and Matching the Music), so you would end up using it more for Slower Music and stuff like that.
 Would still love to see this pushed Further, to where stuff is actually fully in Sync, no matter the Style of Music.

149
General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread
« on: March 27, 2022, 02:28:15 PM »
Was Recently wondering if anyone ever did make some Kind of Fast-Motion / Slow Motion Type of Music-Video or something.
 While i am Aware of a bunch of Examples like:
 https://www.youtube.com/watch?v=mdIP3hyxi3k
 Where they Speed up the Music Playback in Shooting or Slow it down, later change the Speed of the Footage to match the Original Song again, creating Some Interesting Effects and a Special Feeling to the Footage. Heard they also do things like that also with some Dance Performance Videos for Music, to make the Movements more "crisp" looking when Sped up later, but cant Quote Sources for that, and think they also just speed it up like 10 to 25% or something like that (pls. dont Quote me on that, cant recall wherever i got that Information from, and How accurate/ true it is?).
 .
 In Terms of Fast Motion i seen this done to quite Extreme Extents, up to a point where it is basically just Stop-Motion Timelapse shooting single Still Frames at a time:
 https://www.youtube.com/watch?v=DbMaGRUFjgc
 (Making of of that video:) https://www.youtube.com/watch?v=H-T3nwvLHJ0
 .
 So Question is, does anyone know of something like this Done with some more Extreme Slow Motion (most of those Fast-Slow-Motion Music videos are probably shot around 60fps slowed down to 25fps if i had to guess, for the Slow Part), would like to see that.

150
Chronos User Discussion / Re: Network connection problem
« on: March 21, 2022, 06:59:47 AM »
I think a Direct connection is possible via one of the two usb-Ports of the Camera, but i am not sure if you need additional software for that or if that would be command-Line only. But With USB some kind of direct connection is possible. From what i know; i personally never used the USB-Connection to PC; the Web interface would not work when using USB. And For Ethernet you will always need some kind of Router or Ethernet-Switch in between, else it wont work.

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