iPhone's 240fps on a DSLR
Discussion
I like the super slow-mo effect and would love to use it for some videos but I don't have an iPhone 6 and not planning to buy one just for that. 720p is enough for my needs.
Also the quality of filming on a full frame DSLR with a good lens will be much better than tiny iPhone's sensor.
Now, what are best/needed settings to get the best result? I'm guessing shooting at 60fps and slowing it down four times will give me 240fps equivalent but what should the shutter speed be in the first place to get best quality and silky smoothness?
Also the quality of filming on a full frame DSLR with a good lens will be much better than tiny iPhone's sensor.
Now, what are best/needed settings to get the best result? I'm guessing shooting at 60fps and slowing it down four times will give me 240fps equivalent but what should the shutter speed be in the first place to get best quality and silky smoothness?
Slowing it down 4 times will give you 15fps.
To get 240 fps you need to speed it up 4 times, which mostly will look ridiculous.
And you seem to be confusing resoluton (720) with framerate.
Take a step back, tell us what you want to achieve and what gear you have at the moment to do that.
To get 240 fps you need to speed it up 4 times, which mostly will look ridiculous.
And you seem to be confusing resoluton (720) with framerate.
Take a step back, tell us what you want to achieve and what gear you have at the moment to do that.
RobDickinson said:
Slowing it down 4 times will give you 15fps.
To get 240 fps you need to speed it up 4 times, which mostly will look ridiculous.
And you seem to be confusing resoluton (720) with framerate.
Take a step back, tell us what you want to achieve and what gear you have at the moment to do that.
Ok, it will "look like" 240fps with quality of 15fps.To get 240 fps you need to speed it up 4 times, which mostly will look ridiculous.
And you seem to be confusing resoluton (720) with framerate.
Take a step back, tell us what you want to achieve and what gear you have at the moment to do that.
and the 720p was in reference to what my DSLR can shoot at 60fps. 1080p is only 30 or 25fps
As I mentioned - I want a SUPER Slow Motion, just like iPhone6's 240fps.
https://www.youtube.com/watch?v=eGilvHv0_bE
I have a 1Dx and a 5DMkIII but they seem to be the same in terms of Video capabilities.
Edited by rottie102 on Tuesday 9th December 16:03
Disastrous said:
You want Twixtor and 60fps.
Short answer is you won't get anything out the camera that approaches 240fps. It will look juddery as hell. Twixtor is a plugin that basically creates ghost frames (I think, not really studied HOW it does it) to smooth out your slomo stuff.
Yes it places artificial frames between your real ones by looking at the one before and one after and effectively joining the dots.Short answer is you won't get anything out the camera that approaches 240fps. It will look juddery as hell. Twixtor is a plugin that basically creates ghost frames (I think, not really studied HOW it does it) to smooth out your slomo stuff.
Panasonic GH4 will do 96fps from but obviously still quite a way off of 240fps
You need one of these:
http://www.visionresearch.com/Products/High-Speed-...
I would suggest renting as the purchase price is rather high.
http://www.visionresearch.com/Products/High-Speed-...
I would suggest renting as the purchase price is rather high.
Disastrous said:
Short answer is you won't get anything out the camera that approaches 240fps. It will look juddery as hell. Twixtor is a plugin that basically creates ghost frames (I think, not really studied HOW it does it) to smooth out your slomo stuff.
Don't ask me how, but my Sony TG3 produces slow-motion video (for only a few seconds) at a 240fps equivalent.Quality isn't great though (Normally pin-sharp 1080i but quality drops a lot in this mode).
http://youtu.be/sx_3RoiHPUg
I think your best bet is a camcorder.
_dobbo_ said:
Shutter speed isn't a factor in video, as the shutter stays open when recording.
Depends on the camera. Proper video/movie cameras use shutter, although I hope it's obvious that the shutter speed can't drop below the frame rate, if that makes sense.We use the Sony FS700 on some of the televised rugby matches, it runs at 200-400 fps depending on conditions, albeit with a £15k Canon lens on the front, which has a maximum aperture of around F1.0m. The results are very good, although it's probably a bit overkill for the hobbyist. They can be rented for not too much mind you.
To get 1/4 speed out of a normal 60 fps camera isn't going to look too great, although it is possible. At 15 fps you will see the individual frames, it'll be jerky, although with the interpolating software mentioned earlier, it's probably acceptable enough.
Oh and BTW, strictly speaking you're after Hi-mo, or ultra Hi-mo, so called 'Super Slo Mo' cameras used to run at 2 - 3 times frame rate, giving a playback speed of around half to third speed.
Ignore my username also, I'm far from an expert on this subject, I just chose it 'cause I work in the industry and thought it vaguely relevant.
Disastrous said:
You want Twixtor and 60fps.
Short answer is you won't get anything out the camera that approaches 240fps. It will look juddery as hell.
In camera with a capable camera is best, but you can achieve some great results in twixtor. However you need to be careful of backgrounds and your set up. You can also isolate areas with masks which will fine tune the result. Typically your shutter speed is double your frame rate so that the shutter angle will give nice blur to blend the frames smoothly 25fps-1/50. For twixtor you need to shoot at 1/1000 + to give the software as much sharp info as possible, although playing anything back at normal speed shot with a high shutter speed will give very jerky playback.Short answer is you won't get anything out the camera that approaches 240fps. It will look juddery as hell.
This movie explains some of the pros and (potentially awful) cons of twixtor http://youtu.be/M_LE96nGqik
What you can achieve http://vimeo.com/21919856
How it was done in twixtor http://vimeo.com/23151793
Obviously you need twixtor, a platform to run it under like AE, PR, FCP etc and be au fait with the software. An iPhone 6 might be cheaper and quicker.
t, it looks that way...
can't when normal video quality is incomparable? Is it software only?Gassing Station | Photography & Video | Top of Page | What's New | My Stuff