Messages

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Chronos User Discussion / Re: Chronos 1.4 Footage Thread

« on: November 28, 2022, 06:28:16 AM »

Test sample of magination magnets at 800 fps clashing with water and collapsing.

I love that so much! I had to watch it several times, even at 800fps to follow it.

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: March 29, 2022, 07:59:52 AM »

> Whatever that thing at https://youtu.be/KWYyMc_J8ZU?t=276 is, is looking Extremely Interesting

It's a glass kettle with red and blue lights behind it

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: March 28, 2022, 12:05:20 AM »

I suspect you're asking for 'proper' music videos - which I know very little about. But I've done a couple of these for my ambient duet:

https://www.youtube.com/watch?v=KWYyMc_J8ZU
https://www.youtube.com/watch?v=-Ln4DwY6zpo

The second one was done with a GH5S so only 240fps

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Chronos User Discussion / Re: Active MFT Mount

« on: March 19, 2022, 03:42:31 AM »

Provisionally. But given the price of the passive one, and my collection of Nikon-fit lenses now, I'm not sure it would be worth a lot to me.

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: March 02, 2022, 12:42:29 AM »

My cat comment was just a joke, sorry if that wasn't clear

I do have a couple of slow-mo cat videos which are quite nice but from early on when I first got the Chronos so not really worth sharing. Also one is rather disgusting when from the cat caught a mouse!

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: March 01, 2022, 08:55:33 AM »

Re: Capacitors - it looks like the professionals beat me to it!
https://www.youtube.com/watch?v=6WUxgmMDts4

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: February 25, 2022, 01:51:01 PM »

It's very hard to get cats to do anything when there's a camera running - as soon as I point a camera at either of my cats they curl up and go to sleep!

All those cat videos on YouTube - fake ;-)

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General high-speed discussion / Re: Lens needed to film sports?

« on: February 09, 2022, 01:28:56 AM »

Just a thought - get the camera and a nice fast lens and see how that works without the speedbooster, then save up for one if it seems necessary

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General high-speed discussion / Re: Lens needed to film sports?

« on: February 07, 2022, 12:53:11 AM »

> So in a way, just buy and play? But opt for manual f-stops?

In my case yes. The Chronos is a totally manual camera, so you don't have the option here - There no auto focus and no auto exposure.

Not sure if it's any help, but I found some outside footage, it's not sports (sorry) but was of a subject around 20m away

https://www.youtube.com/watch?v=6o4dyruyryo

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General high-speed discussion / Re: Lens needed to film sports?

« on: February 05, 2022, 07:05:42 AM »

BTW don't worry too much about that forum post. They're talking about C mount lenses there which tend to be for much smaller sensors than the 2.1. My advice (for what it's worth) is to use the Nikon mount that comes with the camera and use SLR lenses. That way they will always cover the sensor, usually with some to spare - hence speedboosters.

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General high-speed discussion / Re: Lens needed to film sports?

« on: February 05, 2022, 07:02:26 AM »

I don't have any of those shots to hand, I'll have a look though! I lost a few slowmos in a drive crash a few months ago so I have a horrible feeling they were a victim of that.

Speed boosters are a way of getting more light out of a lens that covers a larger area than your camera sensor. If you get a full-frame lens (I tend to get old Nikon ones on ebay - they're relatively cheap, especially if you find one with a broken auto-focus as I did once) then they cover twice the area of the Chronos sensor - which is half-frame (micro 4/3 size). What a speed booster does (I THINK), is to channel that extra light, that would normally be lost around the outside of the 4/3 sensor, into the sensor so you get more than the advertised f-number of the lens.

Someone might come along with a better explanation, but thats my understanding at least.

Slow motion uses a LOT of light so the more you can get out of a lens, the better. I don't use speed boosters myself, partly because they are expensive and mainly because I mostly use the Chronos indoors or the back garden (where I can use lights) or on sunny days.

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General high-speed discussion / Re: Lens needed to film sports?

« on: February 04, 2022, 08:01:55 AM »

I filmed some slow-mo cricket (no comments please :-) using a 200mm Nikon Lens and it worked pretty well. That's equivalent to 400mm in old money so quite a useful length. It does need to be a very sunny day to use a lens of that length, so with football you might find the weather is less amenable. Maybe a speedbooster would help with that.

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: January 15, 2022, 02:43:11 AM »

Those are great thanks!, I'm definitely inspired to have a go now - maybe in Summer when the outside lighting doesn't need quite so much help

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: January 12, 2022, 02:38:17 AM »

Thank you for all that detail! I'll think about it

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General high-speed discussion / Re: Slow-Mo Ideas / Requests Thread

« on: January 08, 2022, 09:10:33 AM »

One thing my boyfriend keeps mentioning is exploding an electrolytic capacitor - I'm not doing it because it's too dangerous. Apparently if you get the right sort (cheap ones without a cross on the top) then they go up impressively. There are a few of them on YouTube but they are mostly really badly filmed and usually not slow-mo.

Might be a job for Lauri if he can get hold of a big one ;-)