Magic Lantern Forum

Developing Magic Lantern => Feature Requests => Topic started by: markodarko on March 31, 2016, 09:52:39 PM

Title: In-camera Anamorphic possible?
Post by: markodarko on March 31, 2016, 09:52:39 PM
Hi guys,

It occurred to me the other day when doing some high-fps test shots on my 5D III with ML that the vertical image is "squeezed" and needs to be "unsqueezed" in post to bring it back to 1080p. This lit a bulb in my head. A lightbulb, if you will... Ping!

So... would it be possible to squeeze the HORIZONTAL pixels by 1.34x to mimic the anamorphic lens squeeze so that it's still recorded at 1920x1080 but when it's stretched back out it becomes 2581x1080? If it's possible then perhaps a variable multiplication factor choice could be used, i.e. 1.34x for 2.39:1, 1.32x for 2.35:1 etc.

If this is indeed possible then the higher pixel count would be a great boon for ML and cinematography as a whole and would do away with the need of buying an anamorphic lens. Obviously you forego other advantages of an actual anamorphic lens such as horizontal flare, shallower DOF etc but at least we wouldn't be throwing away pixels when shooting at 2.35 / 2.39. Ya know?

Answers on a postcard to...

Mark.
Title: Re: In-camera Anamorphic possible?
Post by: markodarko on April 05, 2016, 03:17:48 PM
Incidentally, I do know that I can record at a higher pixel count in 3x mode but it'd be great to be able to use my 24mm lens at 24mm and still have 1080 vertical pixels at 2.35:1 in 1x mode - hence my request. (In case no-one is replying as they think I've overlooked 3x mode! :D)
Title: Re: In-camera Anamorphic possible?
Post by: Walter Schulz on April 05, 2016, 03:50:39 PM
IMO it's as easy as filing 1 liter milk and 1 liter Coke into a standard 1.5 liter bottle. AND then be able to fill toddler's bottle with unsweetend milk and fill your lactose intolerant friend's glass with sweet coke from the very same bottle.
Title: Re: In-camera Anamorphic possible?
Post by: markodarko on April 05, 2016, 04:14:24 PM
Thanks for the reply, Walter. From your reply I guess what you're saying is that it's impossible(?) but as ML already does this with the vertical resolution when shooting in 60fps (from the Canon menu) - the 1080p is squeezed by a 1.67x vertical anamorphic factor during recording so that it's recorded at 1920x646:

http://www.magiclantern.fm/forum/index.php?topic=5472.0

...can it not be squeezed horizontally to 1920 from 2538 (2.35:1) so that it's recorded at 1920x1080 or is there a technical limitation in 1x recording mode where the widest available horizontal pixels are 1920?

Cheers,

Mark.
Title: Re: In-camera Anamorphic possible?
Post by: dmilligan on April 05, 2016, 05:03:01 PM
http://www.magiclantern.fm/forum/index.php?topic=17021.msg165260#msg165260
Title: Re: In-camera Anamorphic possible?
Post by: markodarko on April 06, 2016, 12:24:47 AM
Quote from: dmilligan on April 05, 2016, 05:03:01 PM
http://www.magiclantern.fm/forum/index.php?topic=17021.msg165260#msg165260

Wow, did I read that correctly? It's already been implemented?! :-O
Title: Re: In-camera Anamorphic possible?
Post by: markodarko on April 07, 2016, 10:04:55 AM
Please feel free to mark this request as "not possible" as I now understand why from the above linked post and A1ex's explanation. I was thinking of possibilities in terms of pixels instead of the RGB pre-debayered sensor information.

Cheers,

Mark.