DV Info Net - basic questions on the EX

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- Sony XDCAM EX Pro Handhelds (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/)

- - basic questions on the EX (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/100392-basic-questions-ex.html)

Quote:

Originally Posted by John Bosco Jr. (Post 723670)

XDCam uses 3:2 pulldown to retrieve 24p from the camera and disks as, like the V1 and most 1080 cameras, it wraps the progressive 24p image in the 60i stream. The only difference is that the camera has interlace chips instead of progressive like the V1. No idea if the EX will be natively progressive or interlace. XDCam achieves a true 24p image without resolution loss from its interlace chips. I don't know how, but somehow Sony has a way to do it. There are XDCam decks that will enable capture of 24p without pulldown but not from the cameras themselves. Also, if you capture through HD-SDI, I believe you can digitize 24p without having to use 3:2 pulldown.

I'm fairly certain the camera records 24p to disc in PsF format. That's why 24P requires its own disc, formatted for 24p. You get more recording time on the disc which indicates it's not applying pulldown during the writing process (otherwise it would take up the same space as 30p/60i). It applies pulldown upon retrieval to come out the FW, composite, or HDSDI ports (24P via HDSDI is a feature of the forthcoming F355 camera). Via FAM transfer, I'm not 100% certain, but the editing timebase for the XDCAM HD 24P preset in FCP is 23.98 so if pulldown is applied during FAM transfer, the XDCAM Transfer tool or FCP must be detecting and removing it.

-gb-

Greg is correct about the bit rates. 35Mb 1920x1080 and 25Mb 1440x1080. I believe that when you are above 30fps it is 1280x720 at 35Mb so it should look very good. I hope to have an EX next week to shoot some more footage and I will be investigating the overcrank modes in much more depth.

Alister, if you are going to have an EX 1 in your hands could you possibly check for me (and for the rest of us) the issue of the wobble and rolling shutter please? Since weddings are my main line of business I'm particularly worried about the photographer's flash. Can you maybe post a screen shot where one can see the effect of the flash? This issue is the only worrying factor in my case to decide whether I will go for this camera or not. And unfortunately in my country the Sony agent would not be having a demo unit, and there are no rental services, so I really cannot test this out myself. Any feedback would be much appreciated.

So much has been said on the EX1, yet I'm still unclear about all its recording modes... On the brochure's last page (specs), it's said that in SP the camera is only capable of 1440x1080/60i (NTSC) or 1440x1080/50i (PAL).

Yet on page 5 (upper left corner), it's indicated that the EX1 is capable of 24p (with pull down) at 1440x1080, as opposed to native 24p in 1920x1080 or 1280x720.

So, which formats are really available through i.LINK (in HDV) - just the interlaced ones, or all written within interlaced stream (because if 24p with pull-down is available, I see no reason why 25PsF and 30PsF wouldn't)....

Anybody?

second Brian's request ...

The rolling shutter issue is something that I'm wondering about as well.

I have reviewed some of my EX1 footage and there is a very small amount of shutter roll. I had to go through a lot of footage including tracking shots from train windows and fast pans of kite surfers, whip pans etc to find it. What I am saying is that while it is present, I had to actively search for it to find it. I could not find a shot where it is obvious or distracting in normal palyback. the worst I could find was about a 10 degree tilt to some telephone poles shot straight out of the window of a moving train. I hadn't noticed it before and I've watched that shot many times and only found it on a freeze frame when I was actually looking for it. So all in all for normal shooting I can't see it being an issue.