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Messages - B.H.V

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Chronos User Discussion / Re: Noisy image from sensor pattern?
« on: June 08, 2022, 07:31:59 PM »
review this footage: https://vimeo.com/vimaxmedia/review/717910888/a5967ffdc4

I am fighting with getting a clean image from our Chronos 2.1. This latest clip has 3 Aputure lights, 300X top down (lightbox), Nova P300 key light and C300DII backlight all at 100%. Shutter was at 270į shot at 720fps. This shot is using Canon 70-200 L, but I have shot other clips with 30 -105 Canon Cinema Lens, Canon 50mm 1.2, Canon 24-70L and Sigma 24-70 2.8 all with similar results.

I always get this noise pattern in the image. Black calibration has zero effect. Not happy with the Chroma noise either but I could live with it. Its just annoying that my cellphone gets a cleaner image at 900 fps than this camera with good glass. Please tell me I am just doing something wrong or missing a setup step.

What phone do you have that does 900 fps? Huawei Mate 30 Pro or Huawei P40 Pro?

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: June 05, 2022, 04:52:15 PM »
Korean BBQ at a local Night Market. (This was around 2:00 pm)

https://www.instagram.com/tv/CeKblRgpn6e/?igshid=YmMyMTA2M2Y=

Yummy! KBBQ!

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: May 18, 2022, 07:49:17 AM »
Birds are probably my favorite things to slowmo. Were you using 180 degree shutter?

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That's why I held off buying the 2.1 for now. Wondering if the 100,000 fps mode will be added in the future.

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: May 10, 2022, 08:03:15 AM »
@BHV how are you filming at 700fps? I thought the 1.4 can only film as low as 1057 FPS?

Yeah, you can set the fps to any fps you want. I'll shoot at a lower fps to get more light.

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: May 08, 2022, 07:28:14 AM »
Squirrel shaking his head while feeding on seed at 700 FPS shot through a window. I used 700 fps as it was quite dark and cloudy as going to 1500 FPS would've had a lot more noise. Recorded with a Navitar 75mm 1.3 lens in Cinema DNG, upscaled via Topaz VEAI to 1440P and converted to HDR for Youtube. If you can, play back in HDR as it playa back at a higher bitrate with less banding.

https://www.youtube.com/watch?v=chLuB3_GuEY

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: May 04, 2022, 10:23:20 AM »
Thanks mklinger! Yeah, I donít know if this is an issue with the 1.4, but I believe if you try to change your white balance in post too far, it can get real strange as if itís not really a RAW file. You really need to get the 1.4 balance as spot on as you can even when shooting RAW. Is this something the 2.1 exhibits as well when pushing the white balance in post?

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: May 04, 2022, 08:43:14 AM »
Here is a very short Chronos 1.4 RAW DNG Test I did under cloudy conditions graded in Davinci. It was then upscaled to 1440P through Topaz VEAI. I hope Krontech can work with a color scientist and get some LUTS for the 1.4 and 2.1. Also, I was hoping they can add a way for us to fine-tune the white balance manually by having a Kelvin option.

https://www.youtube.com/watch?v=6Aq-S_RvBTE

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: May 03, 2022, 03:41:51 PM »
Nice job! What software are you using to import the LUT?

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Chronos User Discussion / Re: Sigma 600mm Lens On Chronos
« on: April 17, 2022, 10:15:52 AM »
I was thinking about getting a Minolta 500mm lens for the Chronos 1.4.

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: April 17, 2022, 10:06:42 AM »
@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.

Here's a quick screen record of Topaz VEAI comparing the before and after of raking leaves. Again, not perfect but in my opinion more useable than the original file and pretty decent coming from a 1.4. In the video, it shows the two side by side at normal viewing, and then zoomed in 50% and 100%. At normal viewing, it's more than useable in my opinion. Sometimes, I use anti-moire filters to fight extreme aliasing when I shoot, but I mostly use them on my Sony RX10 IV in the HFR modes since they have more lineskipping and moire compared to the Chronos 1.4.


https://www.youtube.com/watch?v=IPg5U1HKgKc

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: April 16, 2022, 08:37:29 PM »
@Nikon1 Good idea! I'm gonna try and test some of those things out.

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: April 16, 2022, 07:28:52 PM »
@Solcscud007 that's some really nice reach! How's the weight and balance of that lens on the Chronos 1.4?

@Nikon1 Thank you! Yes, Topaz VEAI has had major updates to it this past year, and I'm sure it will get better. There's a lot more finetuning of parameters to avoid oversharpening and artifacts. As long as I don't overdo it or go past 2X upscale, I think it works pretty decently on most scenes. I also use a bit of Neat Video and film grain if I need to even out the image more. I'll post more examples and side by side comparisons in the coming days. : )

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« on: April 16, 2022, 03:33:51 PM »
Hi all. It's been a while since I posted as I've been doing a lot of testing when it comes to bringing out the best in the Chronos 1.4 files. Here is a clip I shot of a bird taking off at 1500 fps at 1280 X 720P. I upscaled it via Topaz VEAI to 2560 X 1440P and outputted it as an HDR video for Youtube. As some of you may know, Youtube does a pretty bad job when it compresses video files resulting in banding in extreme areas. Upscaling to 4K does help to allow for that higher bit rate for playback, but in extreme gradient or low light, the banding is very noticeable with or without film grain. However, I did some testing when uploading it to Youtube as an HDR file and the banding is almost non-existent (even in extreme gradient and low light areas). Looks like Youtube compresses HDR files much less. If you do have an HDR display definitely view in that mode at 1440P for the best quality and low banding. I'm viewing this in HDR with my Macbook Pro 16" M1 MAX.

https://www.youtube.com/watch?v=5VofS6en24w

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Chronos User Discussion / Re: Post Chronos 2.1 clips here!
« on: April 07, 2022, 05:55:22 AM »
Very nice color!

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