A fourth dimension-lapse interval, in relation to the speed of the activeness in front of you, essentially determines the speed of your output video. While these guidelines volition help yous gear up a proper fourth dimension-lapse interval framework, no two scenes or events are exactly alike. It still pays to practise a petty “dorsum of the photography journal” calculations. This postal service will assistance you sort things out.
How to Choose a Time-lapse Interval
I queued upwards the time-lapse exposure video to the beginning interval department.
(***amature tutorial warning*** 🙂 These were the first I’d ever fabricated, updated videos in the works)
Here are a few things to think about:
What practise you lot want to capture and how long is the event?
What specific event do you want to capture? Is it a full sunrise, a offset to finish construction project, or a clip of cars at nighttime on a busy highway, etc. What event and how much of the event you desire to capture is the start consideration in determining your interval. [bated]This mail on
Choosing a timelapse interval is function of a larger road-map outlining timelapse photography called The Massive Fourth dimension-lapse Photography How to Guide…[/aside]
Make up one’s mind:
How long you lot need to be present and snapping to record what it is that y’all want to include in your time-lapse compilation.
How fast is the action taking place?
Retrieve about how fast the scene is changing. Also think about how you would like that change to be displayed in the concluding time-lapse compilation. For example if you lot accept a fast changing scene and you want to record smoothen fluid motion then you lot volition want to set a shorter interval. A slower changing scene can let a longer interval to nonetheless achieve smoothen playback. If yous want “jerky” motion, where information technology looks like things pop from one location to some other (instead of blending) utilise a longer interval in a fast scene.
Make up one’s mind: How you would like the final compilation to flow.
How fast the scene earlier you is changing.
The exposure and fourth dimension-lapse interval tutorial video above shows a side by side comparing of a brusque and long interval and the resulting speed change.
To give you a feel on where to commencement here are some common scenes with possible intervals:
Fast moving clouds
1- 3 seconds
Slower moving clouds
Moon and sun near horizon (or telephoto)
Things photographed with a telephoto[/one_fourth]
fifteen – 30 seconds
Sun across sky (no clouds) (broad)
Stars (xv – sixty seconds)
Fast growing plants (ex vines) (90 – 120 seconds)
Construction projects (5min – 15min)[/one_fourth_last]
How long do you lot desire your time-lapse compilation to be, and how long to shoot?
Think near how many pictures are required to give you the compilation scene length that you want? Also short and you won’t take enough frames to make a meaningful compilation. (e’er see a four second time-lapse, by the time yous realize what you are watching, it’southward over). Too long and yous will have unneeded extra frames to transfer and process (not a huge bargain though unless you are short on menu or hard-drive infinite).
Sometimes you may need a specific length compilation to fit an assignment or a storyboard segment in a larger time-lapse work. Whatever the instance it’s good to do some back of the photography journal calculations. There is one stipulation you need to follow as you do your calculation:
Interval must be longer than exposure
Frame interval > Exposure time
Your interval MUST exceed your exposure fourth dimension. A good dominion of thumb is to keep your exposure at near 60% – lxxx% of your interval to give your camera enough time to articulate the image buffer earlier the next frame is taken.
Avoid dropped frames
Recollect of your camera’s buffer like a pipage connecting the newly recorded paradigm and you photographic camera’s memory card. It takes a little bit of fourth dimension (depending on your paradigm resolution) for the information to be processed and period from one identify to the other. If you try to send images too quickly some may go lost (your photographic camera will skip a frame). Bad news. I’ll exist explaining the concept of photographic camera buffer “dropped frames” in greater detail in a separate post, simply for now make certain your camera’s “read/write” light is off before the next frame is taken.
Bringing information technology all together:
Frame rate: Time-lapse compilations are commonly rendered at 24 or 30 (fps) frames (photos) per second. While in that location are other uses for other rates, this example will include a 30 fps compilation.
Interval Instance: Fast clouds and a compilation length goal
It’southward an awesome sky
and fast moving clouds are existence painted a warm orange from the evening sun. You have decided that you lot would like to create a x second cloud fourth dimension-lapse compilation with an extra ii seconds to fade in and out. Hither’s what you calculated:
Y’all want 12 seconds of compiled cloud footage to be shown at xxx frames per second.
This will crave [ 12 x 30 = 360 ] 360 frames to captured.
You can see that the clouds are moving moderately fast and you want a prissy polish video. Y’all decide to shoot at a ii second interval.
At a two 2nd interval and with the goal of 360 frames, you demand to snap images for [ two x 360 = 720 ] 720 seconds or [ 720 / 60 = 12 ] 12 minutes (not including exposure time but that is minimal).
“Outstanding!” You think to yourself as you grab your copy of Atlas Shrugged and begin to setup for the shot. You can either program your intervalometer to shoot 360 frames at a 2 second interval, or you can fix it to infinite frames and simply watch the time. I ordinarily do the latter (if I don’t need to relieve the card space for something else) incase something interesting comes into view I can only permit it ringlet.
Information technology’s worth mentioning…
If you are shooting a changing matter for the first time and aren’t really sure what interval to use, it is ordinarily best to employ i that is faster than y’all need rather than slower. You can always speed up as well many frames in post merely you lot can’t ever go dorsum and capture those missing too slow intervals.
Return to The Massive Time-lapse Photography Tutorial: