Sony XDCAM EX3 CCD to Film Back for Boujou

[Don Greening]

[Darwin Go] “i need to know what size is the CCD for Sony EX3 that would correspond to a 16:9 Square aspect ratio.”

Hi Darwin,

You had all the information you needed for your answer contained in your question. The EX imager(s) are in the 16:9 shape with an effective pixel count of 1920X1080 square pixels. Sony defines the chip size as 1/2″. It’s the effective pixel count in the 16:9 aspect that you want to plug into your text field.

FYI the EX sensors are CMOS and not CCD.

Hope this helps.

Don

[Darwin Go]

Hey Don,

Cheers bro! thanks for confirming the aspect ratio it was a big help. we did our math yesterday and came up with this as the actual dimension of the Cmos sensor.

.5 inch CMOS sensor

Width= .4359 inches
Height= .2451 inches

if you would be kind enough to check it out as well.

thanks again!

Darwin

[Matthieu Robert]

Hi Darwin,

actually, the chip size is note the same as its “size name”
1/2″ is not a 1/2″ chip. It’s the size of the ring holding the chip. (it’s a historic reason).
Per exemple, a 2/3″ Scarlett chip is actually 10.1 x 5.35mm. It’s smaller than 2/3″, even if you considerate 2/3″ as the diagonal.

So based on that, a 1/2″ EX3 chip would be 7.575mm x 4,261mm

Anyway, Boujou can work without this information, unless you want to tell him the focal length.

By the way, is your EX3 chip perfectly centered ?
Mine is pretty off centered, I can clearly see it when I zoom, the center of the image is moving a bit (easy to see when you active the center mark in the LCD)

I m talking about that because the center of the perspective is very important when you do 3d tracking jobs.

[John Sharaf]

It’s unlikely that the chip is “off center”, what you’re noticing is tracking error in the zoom lens. This is quite common, even in expensive cine zooms.

JS

[Matthieu Robert]

Hi everyone.
I have an EX3 (similar to EX1 here).
I would like to know if anyone has try to do some 3d tracking with ex3’s shot.
I ve corrected the barrel distortion and off center with a Mokey calibration, but Boujou is not enable to find any good solution…

So I’m wondering if the issue came from de CMOS sensor and its rolling shutter.

thanks.