View Full Version : XDCAM EX review with frame grabs.


Alister Chapman
September 6th, 2007, 10:18 AM
Here is another look at the EX. With a couple of frame grabs.

http://www.ingenioustv.com/xdcamex.asp

Chris Forbes
September 6th, 2007, 10:31 AM
Thank you.

Piotr Wozniacki
September 6th, 2007, 10:31 AM
Here is another look at the EX. With a couple of frame grabs.

http://www.ingenioustv.com/xdcamex.asp

Interesting. Three things caught my attention:

1. Cooling fan?!! It's going to be noisy, and I was counting on a dead-silent operation due to the lack of moving parts!

2. Peaking showing all or nothing; just like on my V1 (if not adjusted correctly with intensity and colour)

3. Expanded focus works while shooting!

Peter Jefferson
September 6th, 2007, 10:52 AM
I would assume that the cooling fan is for the CMOS... considering it's using a DSLR type design, I wouldn't doubt that its there for that specific purpose... more than likely to cool a heat sink attached to the CMOS.

One reason DSLR sensors are so efficient (considering their size), is due to the power and cooling efficiency. One reason we haven't seen DSLR sensors in handycams is for this reason, the other being zoom reach and lens to sensor placement relative to zoom ratios.

Anyways... DSLRs don't require consistent power like this (video), but when they do fire, they chew up lots.

In this case, with the same spec as Sonys latest DSLR sensor I don't doubt that this temperature management is in place. Hell if it means having bigger sensors, all we need to do is mount a mic to offset that noise.

Personally, I'd rather have a noisy camera than one that might overheat.

In addition i doubt that the noise would exceed a standard tape transport noise level, I do however feel that the vent itself might be prone to blocking or intake of dust and sand etc, in turn, this could cause more problems later on such as fan vibration or inefficiency due to dust and blockage

Justin Carlson
September 6th, 2007, 10:57 AM
1. Cooling fan?!! It's going to be noisy, and I was counting on a dead-silent operation due to the lack of moving parts!


Maybe it'll be electro static?

Tim Polster
September 6th, 2007, 11:01 AM
Thanks for your review.

Looks like they knocked one out of the park with this camera.

Ray Bell
September 6th, 2007, 12:28 PM
Most likely the fans are for the sensors....
CMOS sensors when they get hot produce thermal noise.....

you can see the noise crop up on DSLR camera's when long exposure modes are utilized due to the sensor heating...
at least one camera manufacturer manages the thermal noise by taking a
pre heat up exposure and compairing them to the long exposure and
subtracting the delta values of pre-heat to post-heat.

In theory this negates the thermal noise foot print......

Greg Boston
September 6th, 2007, 04:00 PM
FWIW, the full size XDCAM HD cameras also have a cooling fan. It's located near the back of the camera with vents on the rear of the handle itself. The only time it was ever noticed was by a soundie with cans on. It wasn't objectionable since the talent were 10 to 15 feet away, all with lavs and soundie operating boom for insurance. With the big camera, I suspect it's for cooling with the laser operating. Maybe true about the sensors on the smaller camera.

-gb-

Alister Chapman
September 6th, 2007, 04:01 PM
The fan was extremely quiet, in fact it was so quiet I never heard it. Noise from the fan is NOT going to be an issue. We are not talking PC cooling fans here, just a slow fan to prevent heat build up.

Piotr Wozniacki
September 6th, 2007, 04:08 PM
The fan was extremely quiet, in fact it was so quiet I never heard it. Noise from the fan is NOT going to be an issue. We are not talking PC cooling fans here, just a slow fan to prevent heat build up.

Thanks Alister - good to know. And yet, it's mechanical after all - and can become noisier with time...

Kyle Self
September 6th, 2007, 05:51 PM
Alister,

Did you pull any of the footage straight from the cards into a NLE? With the talk I have seen of the wrapper being MP4 instead of MXF I am curious how the editing software is handling it. it would be a real downer to have to wait for a software revision to read the clips.

Thanks for all of the info and the screen grabs.

Kyle

Jason Strongfield
September 6th, 2007, 06:00 PM
http://www.ingenioustv.com/images/traingrab1.jpg

did you managed to shoot with its "progressive capability" ? on that grab you can see all the nasty interlacing.

Piotr Wozniacki
September 6th, 2007, 06:22 PM
Alister,

Did you pull any of the footage straight from the cards into a NLE? With the talk I have seen of the wrapper being MP4 instead of MXF I am curious how the editing software is handling it. it would be a real downer to have to wait for a software revision to read the clips.

Thanks for all of the info and the screen grabs.

Kyle

Exactly... Why the consumerish, MP4 wrapper? I was hoping for the true workflow of the XDCAM HD, so highly appraised by Simon and others - with FAM, etc. Yes, there is software provided for re-wrapping, but this is an extra step in the workflow. Who knows how efficient (time-consuming) is that?

Stu Holmes
September 6th, 2007, 07:43 PM
included software with the EX1 converts the MP4's to MXF.

thats from the brochure (by memory).

Mark Hartopp
September 7th, 2007, 05:34 AM
Hi,
Does anyone know if the fan/air intake/out is well protected against dust/sand ingestation. I film alot of action sports in sandy/duty location and it's not uncommon for me to spend a day cleaning my camera after a shoot.

I think this fan may be a fatal floor for me. Any new would be grate.

Mark

Alister Chapman
September 11th, 2007, 01:00 AM
I didn't shoot any progressive material but I will next week.

There is an Import and browser plugin that can covert to MXF and allows import into Premiere and edius as well as new FCP transfer software.

As far as I can tell the fan circulates air around a heatsink, I don't think dust can actually get inside the camera, but I will take another look at this. The full size XDCAMs have a very complex ventilation and fan system and I film in really bad conditions but have not had any issues with moisture or dust getting in.

Brent Ethington
September 21st, 2007, 07:45 PM
seeing a progressive frame will be interesting. I was going to complain about how underwhelmed I am with the lack of detail in the train frame, but then I read Alister's comment on the site that says "The grab was created by transferring the EX footage to XDCAM HD via HD-SDi, so it has been down sampled from 1920x1080 to 1440x1080, then copied via HD-SDi from the EX1 to a XDCAM HD deck, re compressed as a 35Mb XDCAM HD clip then exported from FCP." So, looks to have gone through a bit of processing... :-)

Any chance of posting (or pointing to a post of) a full 1920x1080 frame?

Phil Anderson
September 21st, 2007, 10:19 PM
My understanding on the XDCAM's is that the fans are no louder than the noise from someone breathing on set.

Chris Hurd
September 22nd, 2007, 09:34 AM
Any chance of posting (or pointing to a post of) a full 1920x1080 frame?Your wish is my command... see http://www.dvinfo.net/conf/showthread.php?t=104053