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anamorphic feature with Alexa


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#1 nacho lopez

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Posted 13 December 2010 - 04:49 AM

Hi all.

I´m preparing a film for February with the Alexa.
The director wants and I´m agree to have a final image format of 2.35.
What is the best way to get 2.35 with the Alexa, I know is not the best but perhaps the less worst.

Have the wiewfinder of the camera 2.35 preview? I say the lines of the cache.

How about to do this is post, to have the release copy in anamorphic?

Any one have done this? even with the red.

Thank you very much!

Nacho López Fuentes

www.nachodp.com
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#2 Markus Rave

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Posted 13 December 2010 - 05:46 AM

I can only tell how this works with Red. You switch to 4.5k widescreen for using spheric lenses. Using anaorphotic lenses you go to 4k ANA to stretch the image to 1:2.4 in the viewfinder and HDMI outputs for framing. That´s all. I am pretty sure there is not much to it when you shoot with the Alexa.
When you are using anamorphotic lenses you can just take the squeezed image via DPX and print it whereas going with spheric lenses you have one optical step for release. Might be done in post. I just recall S35 needs that and since you shoot digital equivalent it will be similar in my opinion. Of course not counting audio issues.
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#3 nacho lopez

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Posted 13 December 2010 - 07:00 AM

Perhaps i don´t explain well with my child english.

I mean made 2.35 without anamorfich lenses in shotting.

Tank you
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#4 Francesco Bonomo

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Posted 13 December 2010 - 07:50 AM

Have the wiewfinder of the camera 2.35 preview?


Yes. The Alexa comes with a set of standard framelines, including 2.35 (in the menu click on "Monitoring", then "Framelines").

Posted Image

You can also design your own framelines here and then upload them to the camera via a SD card.
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#5 Mitch Gross

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Posted 13 December 2010 - 12:09 PM

If you wish to maximize the use of the camera's 16x9 sensor, then you could use a Hawk 1.3x squeeze anamorphic lens. This mild squeeze is still easy enough to operate with uncorrected, yet when the image is de-squeezed in post you will have a 2.35 frame that utilized all over the camera's sensor.
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#6 Jamie Metzger

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Posted 10 January 2011 - 10:07 PM

If you wish to maximize the use of the camera's 16x9 sensor, then you could use a Hawk 1.3x squeeze anamorphic lens. This mild squeeze is still easy enough to operate with uncorrected, yet when the image is de-squeezed in post you will have a 2.35 frame that utilized all over the camera's sensor.


Perfect Idea.

I'd love to see framegrabs of Anamorphic lenses compared to spherical lenses on the alexa.
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#7 Ruairi Robinson

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Posted 10 January 2011 - 11:19 PM

Perfect Idea.

I'd love to see framegrabs of Anamorphic lenses compared to spherical lenses on the alexa.


I understand Alexa doesn't yet properly support anamorphic lenses.

R.
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#8 Mitch Gross

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Posted 11 January 2011 - 03:00 PM

The Alexa doesn't desqueeze the image for the viewfinder or other outputs, but the Hawk 1.3x lenses will cover the sensor. There are boxes that can be used with the HD output for proper monitoring of the image.

For full anamorphic support, the ALEXA-OV model will have an optical viewfinder and a taller sensor to properly interact with 2x squeeze lenses. But that model is some time off.
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#9 Patrick Thomas King

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Posted 02 February 2011 - 02:02 PM

The beauty of the firmware... Demand from the end-user i.e Option to squeeze output on either 1.3x or 2x EVF, MON OUT, REC OUT etc, will no doubt appear in a future firmware release.
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