time lapse day to night

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DAVE M
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Joined: May 17 1999

Been asked about the correct intervals for a day to night time-lapse/interval shoot.

I'm not sur eof the camera but it'll probably be a sony HDV A1E or a PD150

cheers

harlequin
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Joined: Aug 16 2000

Last time i did one of these i did it 'un'conventionally.

I recorded all the time from start to finish on a 4 hour tape.
Captured the lot
Increased replay speed until i got what i wanted
exported that file.

Gary MacKenzie

sepulce@hotmail.com ( an account only used for forum messages )

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shellgrip
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Joined: Dec 5 2005

Or... you could use Scenalyzer to capture as 'time lapse' footage. I'd agree with Gary - I'd film 'normally' then use other tools to turn it into a time lapse sequence - gives you more flexibility in my opinion.

Jon

Dave R Smith
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Joined: May 10 2005

Following theory..
say requirement was 1 day(and night) to be displayed in 10 mins (in UK so 25fps).

This would mean 24*60(1440) mins compressed to 10 mins ie 144th.
So instead of 25 fps, will be 144/25 fps.
Answer is 1.576 fps.
Some time lapse may require camera going into stand-by mode - where you may need to check aperture/focus/white balance csettings aren't lost.
Obviously here that isn't the case - Gary's solution sounds practical - haven't used Scenalyzer.

For night - if outside - hope it doesn't get nicked if left.
- if inside - if looking out at building site etc -watch out for internal lights messing up shots with relections off window.

I'm assuming this isn't a security camera job - if so I could check with a mate of mine for different options.

Dave.

harlequin
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Joined: Aug 16 2000

the trick is to replay the whole thing and get the effect you want , then top/tail it to fit exactly within final spec.

a great camera/setup for this type of job would be a high quality security camera fed to a dsr11 deck or similar with dvcam tape .

i did a daytime one where the time for start was normal , ramped up to very fast and at end fast ramped to normal.

Gary MacKenzie

sepulce@hotmail.com ( an account only used for forum messages )

Thinkserver TS140 , 750ti Graphics card  & LG 27" uws led backlight , Edius 8

Humax Foxsat HD Pvr / Humax Fox T2 dvbt

paultv
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Joined: May 16 2002

I use Premiere 6.5 on my Laptop with firewire connected to my FX1. The Stop Motion utility in Premiere works a treat, settings in frames per minute - I have an inverter to supply power to the Laptop from the car for long duration shooting - by the way most camcorders do not go to sleep if you leave the tape loader open (protect this opening whilst shooting) whilst not rolling tape.

This allows protracted timelapse shooting with not disturbance for tape changing, and no massive, after the event, capturing.

Hope this helps

Another Sunny Day in Ibiza

Dave R Smith
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Joined: May 10 2005

Good answer Paul.
Even better location.

Dave.
Another drizzly day in England.
P.S. How do we know you're in Ibiza
...mmm

Dave
On location in Grand Canyon.

DAVE M
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Joined: May 17 1999

Thanks for that.

I have a personal DSR25 that would give the tape length but this is for another party - could go the lower tech way and record the analogue signal to a DVD recorder.

I thought of the "record the whole night and speed it up" way but was trying to lessen the edit time. But it does sound the most reliable way.

tom hardwick
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Joined: Apr 8 1999

Yes, I'm with the 'shoot-it-all-and-change-speed-later' guys. The Canopus speed controller is good for this as it's often difficult to decide (at the actual scene) what fps rate you should choose and what will look good later. Deciding in post allows you to vary the rate of change to suit what you see and what you want to say.

I used to do a lot of timelapse on film, and in some instances I was leaving the camera's shutter open for 15 seconds at a time, then pulling down the next frame and so on. Of course you could only get 4 frames per minute into the can at these shutter speeds so it was a long, painstaking job, but it gave surreal effects to many humdrum objects. I can't get anything like this in video as far as I can see.

tom.

Mad_mardy
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Joined: Oct 19 2000
harlequin wrote:
Last time i did one of these i did it 'un'conventionally.

I recorded all the time from start to finish on a 4 hour tape.
Captured the lot
Increased replay speed until i got what i wanted
exported that file.

yep done it like this as well a whole hour down into a few seconds filmed around magi hour
speeded up 8000% in the end

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