August 27, 2014, 11:17:58 AM

Author Topic: And another MagicLantern cool feature  (Read 1075 times)

Drizzt321

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And another MagicLantern cool feature
« on: July 16, 2013, 03:21:04 PM »
So now you're able to sample the image in 2 different ISOs which basically gives you a single image HDR-like DR, although there are some penalties such as higher aliasing and moire, and lower resolution in the highlights and shadows. Still, really cool!

http://www.magiclantern.fm/forum/index.php?topic=7139
5D mark 2, 5D mark 3, EF 17-40mm f/4L,  EF 24-105mm f/4L IS USM, EF 135mm f/2L, EF 85mm f/1.8
Film Cameras: Mamiya RB67, RB-50, RB-180-C, RB-90-C, RB-50, Perkeo I folder, Mamiya Six Folder (Pre-WWII model)
http://www.aaronbaff.com

Niterider

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Re: And another MagicLantern cool feature
« Reply #1 on: July 16, 2013, 04:33:19 PM »
Right on! Thanks for posting

Now the wait begins for this to become available for the 5d mark ii...

teedidy

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Re: And another MagicLantern cool feature
« Reply #2 on: July 16, 2013, 04:38:14 PM »
Looks like it is only available on the 5DmkIII and 7D due to two separate physical chips to read sensor data with different sensitivity levels. Older cameras only have a single input so this will not be available to all cameras.
5DmkIII, 24-70 f/2.8L, 50 f/1.4, 70-200 f/2.8L, 600ex, 600ex, 430ex(I and II) 580ex I, 50D(backup and ML Video), G1Xii

Click

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Re: And another MagicLantern cool feature
« Reply #3 on: July 16, 2013, 04:40:20 PM »
Cool  8) Thanks for sharing.  :)

Drizzt321

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Re: And another MagicLantern cool feature
« Reply #4 on: July 16, 2013, 05:22:43 PM »
Looks like it is only available on the 5DmkIII and 7D due to two separate physical chips to read sensor data with different sensitivity levels. Older cameras only have a single input so this will not be available to all cameras.

Interesting, I didn't read far enough for that. I guess it sets the chips to different sensitivities, and then is basically line-skipping and doing the interpolation between them all. Ouch. I think I just hurt my brain trying to think of the math that's needed for some of this.
5D mark 2, 5D mark 3, EF 17-40mm f/4L,  EF 24-105mm f/4L IS USM, EF 135mm f/2L, EF 85mm f/1.8
Film Cameras: Mamiya RB67, RB-50, RB-180-C, RB-90-C, RB-50, Perkeo I folder, Mamiya Six Folder (Pre-WWII model)
http://www.aaronbaff.com

teedidy

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Re: And another MagicLantern cool feature
« Reply #5 on: July 16, 2013, 05:41:53 PM »

Interesting, I didn't read far enough for that. I guess it sets the chips to different sensitivities, and then is basically line-skipping and doing the interpolation between them all. Ouch. I think I just hurt my brain trying to think of the math that's needed for some of this.

Skips lines of 2,

RG RG RG RG  -- ISO 1600
GB GB GB GB  -- ISO 1600
rg rg rg rg      -- ISO 100
gb gb gb gb   -- ISO 100
RG RG RG RG  -- ISO 1600
GB GB GB GB  -- ISO 1600
rg rg rg rg      -- ISO 100
gb gb gb gb   -- ISO 100

to avoid funky banding.
5DmkIII, 24-70 f/2.8L, 50 f/1.4, 70-200 f/2.8L, 600ex, 600ex, 430ex(I and II) 580ex I, 50D(backup and ML Video), G1Xii

Drizzt321

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Re: And another MagicLantern cool feature
« Reply #6 on: July 16, 2013, 06:10:24 PM »

Interesting, I didn't read far enough for that. I guess it sets the chips to different sensitivities, and then is basically line-skipping and doing the interpolation between them all. Ouch. I think I just hurt my brain trying to think of the math that's needed for some of this.

Skips lines of 2,

RG RG RG RG  -- ISO 1600
GB GB GB GB  -- ISO 1600
rg rg rg rg      -- ISO 100
gb gb gb gb   -- ISO 100
RG RG RG RG  -- ISO 1600
GB GB GB GB  -- ISO 1600
rg rg rg rg      -- ISO 100
gb gb gb gb   -- ISO 100

to avoid funky banding.

Ah, cool. Thanks.
5D mark 2, 5D mark 3, EF 17-40mm f/4L,  EF 24-105mm f/4L IS USM, EF 135mm f/2L, EF 85mm f/1.8
Film Cameras: Mamiya RB67, RB-50, RB-180-C, RB-90-C, RB-50, Perkeo I folder, Mamiya Six Folder (Pre-WWII model)
http://www.aaronbaff.com