Just wanted to share some good old things and wish, we will get new updates for Canon R5 and R6 too. Canon 5D 2 PDR graph still surprises us when loaded with ML (Magic Lantern ) firmware. With the Dual ISO feature, you are able to get HDR images even at the High ISO range.
Dual ISO is a feature of Magic Lantern that provides an increase in dynamic range using a high dynamic range technique. Alternate lines in the image are at ISO 100 and at the second selected ISO setting. The measured improvement in PDR is lower than what Magic Lantern “claims” but there is a real improvement.
Examples of what dual iso can achieve.
Bosted Dynamic Range Sample Shots (NORMAL VS BOOSTED)
Camera used Canon 5D Mark III with Magic Lantern
Latest Findings on Canon R5 by Magic Lantern Forum user Levas
Happen to have a R5 here and I noticed something which I haven’t seen mentioned anywhere else around.
When recording in raw(internal 12 bit), selecting the Canon Log3 option does have influence on your raw data.
Side to side comparison in DaVinci Resolve, canon log 3 activated, and canon log settings to off, shows that activating Canon Log 3 means that the camera is actually recording at an ISO value of 3 stops lower.
Please test yourself.
Record something in 8K raw at iso 800 and with canon log 3 activated. (use fixed value for shutter time and aperture)
Now record the same in 8K raw at iso 100 without canon log 3 activated. (with same aperture and shutter speed ofcourse )
Now load both files in DaVinci resolve, go to the raw tab in color mode, and set both to:
Decode quality -> Full res – Canon
Decode using -> clip
Colorspace -> canon cinema gamut
Gamma -> canon log2
iso -> 800 (both files to 800 to match iso 100 recording to iso 800 recording)
Now look at the parade waveform, it’s identical, max highlight data, noise in the shadows etc.
Now when recording in raw, and having canon log 3 activated, the lowest iso you can choose is iso 800, which makes senses, because in the background, it actually records 3 stops lower in iso 100, to save the highlights.
Also, when comparing footage recorded in iso 12800 with log 3, it’s the same as normal non log raw at iso 1600. Same highlights, same shadows, same noise.
So when recording in raw, maybe better to not have canon log settings activated
All of the above applies for internal raw recording.
Source 1 photonstophotos
Source 2 ML Forum
