Continuous exposure change with CHDK - Creative Uses of CHDK - CHDK Forum
« previous next »
Pages: [1]   Go Down

Continuous exposure change with CHDK

  • 0 Replies
  • 1686 Views
*

Offline c_joerg

  • *****
  • 1251
Continuous exposure change with CHDK
« on: 07 / September / 2015, 02:31:44 »
Advertisements
Hello,

the following video shows pretty impressive one of the advantages of CHDK for time-lapse. With CHDK, the exposure time and ISO values can be change in 1/96 EV steps. So the exposure can be adjusted quite smoothly between images without generating jumps. Usually exposure can be changed with digital cameras and DSLR's only in 1/3 EV steps.

I made the video, because I have the impression that there are many who have not yet understood.

How I made the video:

The video was made with the script isoinc.lua (ISO increment).

http://chdk.setepontos.com/index.php?topic=12165.0

The script then goes from a predefined ISO range. I've had the script of ISO100 (APEX96 = 412) run to ISO400 (APEX96 = 603). This then resulted is 192 images. The pictures I then copied again in the reverse order.
With the then 384 images, I created the video with VirtualDub. Once at 30fps and then again with 60fps.

In the video with 1/3EV steps, I then just took each 32th image and copied 32 times.


http://youtu.be/dsEw2cKN9KQ

« Last Edit: 07 / September / 2015, 02:34:09 by c_joerg »
Logged
M100 100a, M3 121a, G9x II (1.00c), 2*G1x (101a,100e), S110 (103a), SX50 (100c), SX230 (101a), S45,
Flickr https://www.flickr.com/photos/136329431@N06/albums
YouTube https://www.youtube.com/channel/UCrTH0tHy9OYTVDzWIvXEMlw/videos?shelf_id=0&view=0&sort=dd
Pages: [1]   Go Up
« previous next »
 

Related Topics


SimplePortal © 2008-2014, SimplePortal