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Tourist
Posts: 1
Accepted Solution

Timelapse vs Nightlapse for Sunset

I want to film sunsets in a timelapse, but am unsure of the right settings.

 

I'll be in a low-light area, so limited light pollution when the sun goes down. 

 

What is the difference between nightlapse and timelapse modes, and what will get me the best results going from very light, through sunset, twilight and into the night?

 

Thanks!


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Explorer
Posts: 12,856

Re: Timelapse vs Nightlapse for Sunset

Nightlaps on auto will probably work best for you as it allows for the camera to adjust the shutter speed to a longer exposure.

You can read up on the camera settings and these two modes on Abe Kislevitz web page. Start with the Hero4 and work your way up. If you read about each camera, Abe will describe what is new, but doesn't always go into the same detail if they are the same. Most things are still relevant on the Hero6 as they are described in the Hero4 and Hero5.

Understanding Photos Hero4 http://abekislevitz.com/understanding-photos-in-the-hero4/
Hero5 Black http://abekislevitz.com/gopro-hero5-black/
Hero6 Black http://abekislevitz.com/gopro-hero6-black/

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Highlighted
Explorer
Posts: 12,856

Re: Timelapse vs Nightlapse for Sunset

Nightlaps on auto will probably work best for you as it allows for the camera to adjust the shutter speed to a longer exposure.

You can read up on the camera settings and these two modes on Abe Kislevitz web page. Start with the Hero4 and work your way up. If you read about each camera, Abe will describe what is new, but doesn't always go into the same detail if they are the same. Most things are still relevant on the Hero6 as they are described in the Hero4 and Hero5.

Understanding Photos Hero4 http://abekislevitz.com/understanding-photos-in-the-hero4/
Hero5 Black http://abekislevitz.com/gopro-hero5-black/
Hero6 Black http://abekislevitz.com/gopro-hero6-black/
Highlighted
Backpacker
Posts: 781

Re: Timelapse vs Nightlapse for Sunset

@danielr15 ... I wish all GoPro user read these articles....excellent links!

 

@jamiem630 you have to exposure right the pictures.

 

you have to test test test !!!!!!!!!!!!!!! different settings, there is not a fixed recipe....

 

there are three pillars for exposure:

 

  1. lens aperture or f-stop - the amount of light the lens pass to the sensor - here GoPro is fixed f/2.8  - nothing to do here
  2. shutter speed (exposure time) - is the time interval the light hit the sensor
    • take into account also what you subject is - if sport, you have to "freeze the movement so exposure like 1/200 - 1/1000 sec
    • if low speed, seconds, the camera have to be still, otherwise the picture is smudged, unclear, you have to use tripod or mount
  3. ISO - is the sensitivity of the sensor (in celluloid film days was called ASA or DIN)
    • ISO 100 is the basic and the sensor native, normal - less sensitive 
    • ISO steps are 2x so 200, 400, 800, 1600, 3200, 6400 - meaning at each increased step, the sensor is twice as  sensitive
    • like in life, in technology everything has a price - the increased sensitivity means also more noise in the picture - just electronics
    • I found out that Hero6 has very grainy (noisy) dark parts of the pictures if ISO is above 800 ...in Hero5 I may use 1600 ... noise can be removed in postprocessing but also direct in GoPro, hope the new firmware will solve this
    • if PT is off, GoPro ISO max by default is 3200 that means noise.

 

in PT, there is a EV comp, if all the rest are on Auto, you can tell GoPro "I accept a picture underexposed (-0.5  -1.0 etc.) or I want to be overexposed (+0.5 +1.0...etc)  you just do the math"

 

at same f/2.8   the exposure is the same: 

- ISO 100     speed 1s

- ISO 200     speed 1/2s

.....

- ISO 1600   speed 1/16s

....

 

still the picture will look different, from ISO 800 will start to be noisy, and at 1s, if not on mount or tripod, will be unclear.

 

postprocessing can recover exposure issues in pictures.... but not when noisy or shaky

 

timelapse exposure time, from my tests, seems that it is limited to 1/8sec exposure - not always enough - maybe it is in twilights

 

I would use night lapse:

- you will be on tripod or mount

- long exposure time is not a problem.

- block ISO at 100 (PT on, max ISO 100)

 

 

here is the same corner in timelapse (1/8sec) - so timelapse (day) cannot push the exposure more than 1/8sec - it is nothing in that picture

 

G0046014.JPGCapture_1.JPG

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

here is the same corner in nightlapse - pushed the exposure to 7sec !!!!!!!!!!!!!!

 

Capture_2.JPGG0056016.JPG

 

 

 

here is what I would try:

- nightlapse

- ISO 100

- EV comp -1

- shutter - auto - let GoPro choose the right exposure

- interval - (auto - will match the shutter - possible too much pictures) -- you choose a right interval  

 

the result:

as you can see the exposure is 1sec.....

 

that ghost is me moving ....

 

 

 

Capture_3.JPG

 

G0066021.JPG

 

just me,

robert