Magic Lantern Forum

Developing Magic Lantern => Feature Requests => Topic started by: kore on November 19, 2018, 06:11:41 PM

Title: Wanted: "sharpness bracketing" aka 2 consecutive frames w different aperture
Post by: kore on November 19, 2018, 06:11:41 PM
Hi everyone and -as always- thanks for supporting ML.

There's one ML feature I dream about that would make my photoshoots way easier and faster. I love to shoot automotive content with the Canon 85mm @ f/1.2 because it creates on a car the same effect a 50mm f/1.8 creates on a portrait, so I'm sticking at f/1.2. BUT the focused area is obviously too soft at that aperture so my workaround is to take two frames with same exposure but different aperture and then blend them manually in Photoshop.

EXAMPLE:
QuotePicture 1: f/1.2  1/1000  ISO100
Picture 2: f/3.5  1/1000  ISO800

Both have more or less the same exposure, so I stack them on Ps to bring sharp details from the f/3.5 to the beautiful f1.2

The idea for a ML module would be the following:
  1. I set my exposure with a wide aperture (M mode)
  2. I take a 1st picture
  3. As soon as that picture is taken, ML reads my exposure settings and takes a 2nd picture closing my aperture by three stops and rising the ISO to compensate and achieve the same exposure.

Please tell me if I'm not explaining properly.
If ML does that automatically on my 6D, I would be happy to make a donation to whoever does this beacuse my work would be much faster.

Thanks again

(http://i64.tinypic.com/91hw9i.jpg)





Title: Re: Wanted: "sharpness bracketing" aka 2 consecutive frames w different aperture
Post by: a1ex on November 19, 2018, 06:35:31 PM
Already done... since 2012.

https://www.magiclantern.fm/forum/index.php?topic=3113
https://www.magiclantern.fm/forum/index.php?topic=3045

(https://a1ex.magiclantern.fm/bleeding-edge/aperture-bracket.png)
Title: Re: Wanted: "sharpness bracketing" aka 2 consecutive frames w different aperture
Post by: eduperez on November 19, 2018, 11:33:47 PM
Quote from: kore on November 19, 2018, 06:11:41 PM
[...]
The idea for a ML module would be the following:
  1. I set my exposure with a wide aperture (M mode)
  2. I take a 1st picture
  3. As soon as that picture is taken, ML reads my exposure settings and takes a 2nd picture closing my aperture by three stops and rising the ISO to compensate and achieve the same exposure.
[...]

Just out of curiosity: why do you raise the ISO instead of using a slower shutter speed?