Bulb ramping demos

[a1ex]

First try of ML bulb ramping:

Focus ramping:

[robinson brothers]

I got to learn how to do this. Good job!

[a1ex]

Another bulb ramping test:

Camera: 60D
Lens: Samyang 8mm at f5.6
Intervalometer set to 30 seconds
Metering: median, reference brightness at 20%
Shutter speed: from 1/4000 to 28 seconds
ISO: from 200 to 3200 (HTP)
Image quality: sRAW

Postprocessing:
1) developed the RAW files at +1 and +3 EV
2) enfuse
3) defishing (with nona)
4) MSU deflicker
5) frame merger ( bit.ly/frame-merger )

[screamer]

Wow, it's absolutely fantastic, very stable and without flickering!!! i love it

[coutts]

cool stuff!

[Arthur]

This looks great, I can't wait to be able to do something like this on my 1100D too.

Though I can't bring myself to leave my camera out in the open without keeping an eye on it. It's quite dangerous here where I live, so leaving a camera like this it like asking for it to get stolen... Thinking again, even standing outdoors at night to keep an eye on it I'm also asking for it to get stolen... I guess I'll try it on my backyard first, then run to the mountains and stay there with a shotgun in my hands waiting for the time lapse to finish.

[scrax]

...and stay there with a shotgun in my hands waiting for the time lapse to finish.

 

[Legushka]

Beautifully
Can both "Focus ramping" and "First try of ML bulb ramping:" run?

thank you.

[amarax]

I don't know how do you do this....
My Exposure Ramp makes huge exposure incrementation all of a sudden. Shoots another hundred pictures of sunset quite smooth and then - bahh - starts shooting overexposed, then darkening conditions of the sunset compensate the overexposure, another hundred of shots and then again....

Moreover only shutter speed changes during Auto Exposure Ramping, although manual says it also has to change ISO. What ISO should I select? I use ISO 100.
Runing magiclantern-v2.3.550D.60D.600D.50D.500D.5D2 on Canon 60D

[3pointedit]

Love that new one a1ex. what kind of exposure was the camera making during the star streaks? Or is that a post processing feature that also eliminates the flickering?

[tornea.jp]

Another bulb ramping test:

hi A1ex,

Would you mind sharing your speed/iso setting for sunset into night bulb ramping setting?  Obviously, speed during sunset is below 1 sec, twilight would be around 1-15 sec and star trail during night is about 20-30 sec at various iso i would suppose.  Would be nice to post settings as benchmark for all of us.

Thanks,
Jon

[a1ex]

Sure: first pic was at ISO 200 (HTP), 1/8000, and last pic was at ISO 3200 (HTP), 28 seconds. Aperture was probably at f5.6.

[a1ex]

Here's a bulb ramping shot with the 5D Mark II.

Location: Lee Valley, near London
Time: 18:00 - 21:00 ( => no star trails )
Camera: 5D Mark II
Shutter speed: 1/8000 ... 1s (so it wasn't really in bulb mode)
ISO: 200 with HTP (it wasn't dark enough to require higher ISOs; I should have stopped down at f22)
Lens: Samyang 8mm, probably at f5.6
Postprocessing: enfuse (HDR from a single RAW, 0, +3 and +5), defishing (projection: Panini General), VirtualDub with MSU deflicker.
Ramping speed: 0.1 EV / 30 seconds.

[a1ex]

And here's one with the 5D Mark III:

Time: 19h45 - 00h30
Lens: 50/1.8 stopped down at f4
Shutter/ISO range: 1/200 at ISO 200 (HTP) -> ramped up 15 seconds at ISO 1600 (HTP) just before the moonrise -> ramped down to 15 seconds at ISO 800 (HTP)
Post-processed with this script: magiclantern.fm/forum/index.php?topic=2553

[Freelancer]

Hi there,
I have installed the latest nightly build. I don't have the bulb ramping option on my 5D3.
What am I missing?

[dmilligan]

Hi there,
I have installed the latest nightly build. I don't have the bulb ramping option on my 5D3.
What am I missing?

go to http://www.magiclantern.fm/forum/index.php?action=search and type "bulb ramping"