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[saul Oliveira]

Hi there friends:

If I use an Standard Alexa in a feature and have to shoot half of the film with Alexa Studio, the shutter difference will be evident on screen, won´t be?.

So then, I can choose to turn Off mechanical shutter and work only with the electronic shutter. But this means that the optical viewfinder will loose image, isn´t?. So I have to add an electronic viewfinder? and dismount the optical one?

Is this an option I can use?

Cheers

Saul
spain

[Harry Clark]

Hi Saul,
I'm not sure you will see any difference with normal motion. Perhaps with fast pans or strobe lights the differences would be noticeable, but still likely only to the trained eye.
What type of film is it? Action? Or dialogue? If it's the latter, I would not be concerned.
In either event, can you shoot a test first to be sure regarding your decision?
Cheers,
Harry

[Guenter N.]

Saul,
the sweep of the electronic shutter on the regular ALEXA is very fast and rolling shutter artifacts are tiny and not much noticeable - we compared footage that was shot w. electronic shutter and footage that was shot w. mechanical shutter - the difference can not be noticed except in scenes that were intentionally set up to tickle out this difference (like shooting out of a moving car on a bridge with lots of vertical fence lines or lighning strikes.) As you can expect, the Studio footage is clean without skewing and lightning strikes are fully exposing a frame - either hit or miss.
Let us know if you come to a different conclusion.
Best,
Guenter

[Michael Borenstein]

Saul,

You will need the EVF if you are going to keep the shutter parked in Gate mode.  There is an attachment plate for an Alexa EVF that comes with each Studio, so the rental house you are renting through should have this if you need it.

But Guenter is correct, you should be fine with the rotating mirror. 
Regards
Mike

[saul Oliveira]

Won´t be possible to shot a comparison test i´m afraid.

My doubt is: if we in the end decide to shot with mec shutter off is, would it be possible to remove the optical viewfinder to remove some weight? and then use the EVF. I mean...is not just for a shot, would be for 10 days or so.. and hand held stuff...

If in the end we mix meca and elect shutters will let you know about the results.

Cheers friends

[Guenter N.]

To attach a electronic VF you have to remove the OVF and use the cover plate that has the connector for the EVF.
See attached pic