Author Topic: Time lapse photography  (Read 323 times)

Feanor

  • It's mostly downhill from here.
Time lapse photography
« on: July 13, 2019, 07:28:34 pm »
I'd like to take a time lapse sequence from the balcony of my flat in Embra to show the dance of the busses which is quite entrancing.

This would be about 4 or 5 hours, which I'd look to compress to about 30 seconds, probably looking a bit Benny Hill.

Any general pointers as to how to approach this?

benborp

  • benbravoorpapa
Re: Time lapse photography
« Reply #1 on: July 13, 2019, 07:45:11 pm »
What equipment do you have to hand?
A world of bedlam trapped inside a small cyclist.

Re: Time lapse photography
« Reply #2 on: July 13, 2019, 09:55:13 pm »
30 seconds footage @25fps will be 750 images needed - @30fps 900 images gives average of 4.5 hours
So you'll need to set the camera to take a photo every 21 seconds or 18 seconds.
Use a tripod if you got one, bean bag, ziplock freezer bag 3/4 filled with flour/sugar/whatever, to steady it
Garmin Virb free software stitches them together (forgot what it's called)

Re: Time lapse photography
« Reply #3 on: July 13, 2019, 10:14:20 pm »

fruitcake

  • some kind of fruitcake
    • Bailey
Re: Time lapse photography
« Reply #4 on: July 14, 2019, 06:36:39 am »
Does your camera have an intervalometer?

Re: Time lapse photography
« Reply #5 on: July 14, 2019, 10:47:04 am »
30 seconds footage @25fps will be 750 images needed - @30fps 900 images gives average of 4.5 hours
So you'll need to set the camera to take a photo every 21 seconds or 18 seconds.
You also need to consider how fast the buses are moving.
The bus in a frame has to be identifiably the same bus as the bus in the previous frame, which, if it's had time to go 100 yards round a corner, won't be the case.

If the interval is too long, you'll get the buses vanishing from one location and appearing somewhere else, without any illusion of smooth but fast movement.

I'd suggest that you try out various intervals, taken over periods of half an hour or so, and see what they look like, before committing to the full 4-5 hours

fuaran

  • rothair gasta
Re: Time lapse photography
« Reply #6 on: July 14, 2019, 11:57:54 am »
Also consider the shutter speed. If fast shutter speed, it can appear rather jittery. Often best to have a slower speed, so you get a bit of blur, helps to get some movement between frames. So a smoother video.

And make sure you have enough batteries. Or some sort of mains power for the camera, if it supports it.

For software, I have used VirtualDub.

FifeingEejit

  • Not Small just Far Away at the back
Re: Time lapse photography
« Reply #7 on: July 14, 2019, 01:37:00 pm »
I have a timelapse in mind too, I'd totally forgotten that the Garmin Virb can do it until mentioned above.

Salvatore

  • Джон Спунър
    • Pics
Re: Time lapse photography
« Reply #8 on: July 15, 2019, 09:29:53 am »
Also:
- Use manual exposure & fixed ISO . If (given the same shutter speed), the aperture jumps (even 1/3 stop)  from one frame to the next, where will be noticeable flicker)
- Don't use auto white balance
- Use manual focus
- You don't need your camera's greatest resolution.
- Turn off any stabilisation
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