ARRI DigitalGeneral CategoryGeneral DiscussionFirst sightings of ALEXA Studio
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Author Topic: First sightings of ALEXA Studio  (Read 2494 times)
Oliver Temmler
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« on: August 29, 2011, 05:46:54 AM »

One of the first prototypes of the ALEXA Studio, getting ready for IBC. Same features of an ALEXA Plus, but with an optical viewfinder and 4:3 usable sensor area.
« Last Edit: August 29, 2011, 07:04:37 AM by Oliver Temmler » Logged

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Oliver Temmler
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NickRiviera
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« Reply #1 on: August 29, 2011, 06:49:22 AM »

Looks funny.
Which Groundglasses can i use for it? 435?
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Oliver Temmler
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« Reply #2 on: August 29, 2011, 07:28:09 AM »

The ALEXA Studio viewfinder. Accepts 435 eyepieces and, with an adapter, ARRICAM eyepieces. Note the bulge on the right: the viewfinder can be switched from spherical to anamorphic viewing. Viewfinder is completely new optical design. 435 ground glasses will not fit. Also, as the sensor aperture is in between ANSI S35 and DIN S35, you will need special ground glasses, like on the D-21. Otherwise, the frame lines would not indicate what you actually are recording.
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Oliver Temmler
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Oliver Temmler
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« Reply #3 on: August 29, 2011, 07:30:47 AM »

The left side control panel is similar to the one of ALEXA or ALEXA Plus with two new buttons: MIRROR PARK - VIEW and MIRROR PARK - GATE. Stops (parks) the mirror in the view or gate position for 100% optical viewfinder pleasure or checking the gate (i.e. sensor cover glass).
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Oliver Temmler
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Oliver Temmler
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« Reply #4 on: August 29, 2011, 07:36:36 AM »

Here's another one. Black handle this time (the red one belongs to QC so they can hunt down whoever took it).
« Last Edit: August 29, 2011, 07:38:09 AM by Oliver Temmler » Logged

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Oliver Temmler
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Eric Matthew
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« Reply #5 on: August 29, 2011, 08:05:37 AM »

Here's another one. Black handle this time (the red one belongs to QC so they can hunt down whoever took it).


Interesting, thanks for sharing! I am curious though what the ProRes files will like. Will they be identical to a standard Alexa in aspect ratio, etc.?
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Eric Matthew
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NickRiviera
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« Reply #6 on: August 29, 2011, 11:19:04 AM »

435 ground glasses will not fit. Also, as the sensor aperture is in between ANSI S35 and DIN S35, you will need special ground glasses, like on the D-21. Otherwise, the frame lines would not indicate what you actually are recording.

I see. But i can not use our original D-21 GG's because there it's a new mechanic - right?
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Oliver Temmler
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« Reply #7 on: August 30, 2011, 01:56:22 AM »

I see. But i can not use our original D-21 GG's because there it's a new mechanic - right?
Unfortunately, yes. Mechanically, it will be like the ARRICAM GGs.

I think, I need to put something I said into perspective: If I say that the Super35 GGs do not show the exact frame size of the Alexa, we are talking about 0,24 mm (0.00945 inches) image width.

The ANSI S35 TV 1.78 transmitted GG area is 24 x 13.5 mm.
The ALEXA (and D-21) 1.78 active area is 23.76 x 13,365 mm.

Because it really is such a small difference, many productions that shot on the D-21 simply used 435 GGs.
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Oliver Temmler
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Guenter N.
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« Reply #8 on: August 30, 2011, 06:27:48 PM »

Oliver,
thanks for posting these pics - looks great - since I won't be at IBC i have some questions.
I do not see any port for optional EVF. Is there such option?
Is the bottom of the camera flat like the D21 or just like the ALEXA using the BPA-1 to adapt to the bridge plate you are using.
Will the camera shoot 120fps right from the beginning? Have a customer that would want this right away.
Thank you,
Guenter
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Guenter Noesner
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DavidMcGill
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« Reply #9 on: August 30, 2011, 06:36:12 PM »

A discussion came up today regarding video assist for the Alexa Studio.  As the mirror will be blocking the sensor while the operator is looking through the viewfinder while the camera is not running, is there some method to allow the image to be viewed by others or is it an either/or kind of proposition.  In other words, when the camera is not recording, is the situation that either the operator can view the image OR those looking at a monitor, but not both?  Or is there some way for both to view the image while not recording?
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Jamie Metzger
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« Reply #10 on: September 01, 2011, 11:22:51 AM »

will the shutter be adjustable?
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Rodrigo Lizana
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« Reply #11 on: September 01, 2011, 02:35:16 PM »

A discussion came up today regarding video assist for the Alexa Studio...

Indeed, this is a very good question.   

I´m wondering if this camera is going to be rated at 800ASA like the Plus.  With all the ND needed to work at 800ASA under daylight condition, the image on the VF would be quite dark.

Also to know as Guenter asked if the camera is going to achieve 120fps ?.  At full sensor or just 16:9 ?.

Anyway this is quite interesting
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Chris Bell
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« Reply #12 on: September 02, 2011, 12:19:04 PM »

A discussion came up today regarding video assist for the Alexa Studio.  As the mirror will be blocking the sensor while the operator is looking through the viewfinder while the camera is not running, is there some method to allow the image to be viewed by others or is it an either/or kind of proposition.  In other words, when the camera is not recording, is the situation that either the operator can view the image OR those looking at a monitor, but not both?  Or is there some way for both to view the image while not recording?


Video Tap? Maybe CEI is working on a solution ;-)   It's a good question I had not thought of. 
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Christopher Bell
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Oliver Temmler
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« Reply #13 on: September 05, 2011, 04:10:50 AM »

Guenter,
you'll neet to take of the optical VF to get access to the EVF connector. The camera has a flat base like an ARRIFLEX.
Will it run 120 fps? Let's leave that for IBC ;-)

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Oliver Temmler
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Oliver Temmler
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« Reply #14 on: September 05, 2011, 04:16:27 AM »

David,
With the optical viewfinder attached, the only way to get an image for operator and monitor is to run the shutter without recording.
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Oliver Temmler
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