Magic Lantern Forum

Using Magic Lantern => Shoot Preparation => Topic started by: ipatton on June 24, 2013, 09:26:53 PM

Title: Question about HDR settings
Post by: ipatton on June 24, 2013, 09:26:53 PM
Hi folks,
I have ML set for hdr with the "5x1ev, 0-+, 2s" option, so I expect to take 5 shots at 0, -1, -2, +1, +2.
Yesterday I tried some shots and with surprise I had 5 shots at 0, -1, -2, -2, -2.
So I had 3 shots with the same exposure.
What's wrong with my settings?
Thank you so much for any suggestions.
Title: Re: Question about HDR settings
Post by: ipatton on June 27, 2013, 09:10:47 AM
No ideas???  :o
Title: Re: Question about HDR settings
Post by: Walter Schulz on June 27, 2013, 09:20:22 AM
You might want to give more information:
- Camera type and firmware version
- ML version
- Camera setting (Mode, aperture, shutter speed, ISO, highlight tone priority on/off ...)
- Was it the first time you tried adv. bracketing?

Ciao, Walter
Title: Re: Question about HDR settings
Post by: ipatton on June 27, 2013, 02:12:44 PM
Thank you for your answer Walter!
Here my last night settings:
- Canon 50D firmware 1.0.9
- ML version 2.3
- Av priority, F/13, shutter speed 1"6 (2 shots), 4", 2" and 8", ISO 800, highlight tone priority off, AWB, picture style standard
- yes, it was my first attempt in adv. bracketing...

Ciao, Marco
Title: Re: Question about HDR settings
Post by: Walter Schulz on June 27, 2013, 02:37:44 PM
Disable "Auto Power Off", make sure Canon's own bracketing is turned off and test again using mode M. Exposure setting somewhere between 1/200 and 1 sec.
Is bracketing working as intended with these settings?

Ciao, Walter
Title: Re: Question about HDR settings
Post by: ipatton on June 27, 2013, 06:38:50 PM
Walter, I don't understand!
I've just made a try in M, F/8, 1/10sec., Iso 200 and ML HDR mode in 5x1EV, 0-+, 2s.
This is the results:
- shot 1: F/8, 1/10 sec., EV 0;
. shot 2: F/8, 1/20 sec., EV 0;
- shot 3: F/8, 1/5 sec., EV 0;
- shot 4: F/8, 1/40 sec., EV 0;
- shot 5: F/8, 0"4 sec., EV 0.

:o :-\ :o
No EV bracketing and shutter speed not blocked to 1/10 sec.!!!!!
Title: Re: Question about HDR settings
Post by: Walter Schulz on June 27, 2013, 06:54:04 PM
That's the way exposure bracketing works in modus M: Aperture remains constant and exposure time is varied according to your setting.
1/10 s - 1 EV = 1/20 s
1/10 s + 1 EV = 1/5 s (= 0.2 s)
1/10 s - 2 EV = 1/40 s
1/10 s + 2 EV = 0.4 s

Do you have a problem with these results?

Ciao, Walter
Title: Re: Question about HDR settings
Post by: ipatton on June 27, 2013, 07:25:42 PM
Ah, ok...!
You are absolutely right Walter!
So, do you suggest to set always M for hdr bracketing with ML?

Thank you for your help!
Title: Re: Question about HDR settings
Post by: Walter Schulz on June 27, 2013, 08:52:20 PM
I use M for HDR and it doesn't matter if ML is running on the camera or not. ML on the camera comes handy shooting HDR.
Your mileage may vary.

Ciao, Walter