Sony PMW-EX1

Coursedesign wrote on 11/28/2007, 9:37 AM
Anthony Burokas buttonholed one of Sony's guys recently and got some good technical questions about the PMW-EX1 answered.

Here's just one sample:

What about the fact that the specifications only indicate two different data rates, no lower data rate for the lower frame rate of 24p… Does the camcorder then allocate additional bits for each frame to maintain the set data rates?

Yes. If you reduce the number of frames, and the data rate is still 35 Mbps, the encoder gives more bits to each 12-frame GOP.

I think that's pretty amazing on the 60p. Most other cameras reduce resolution when overcranking, probably because they couldn't get the write speed they would need [with pre-SxS cards).

More from this Q&A at IEBA Tech Thoughts.

Comments

MUTTLEY wrote on 11/28/2007, 12:05 PM

Good stuff. I just put down a deposit on one literally ten minutes ago from my local place, in theory I should be getting mine early next week ... can't friggin wait!!!

- Ray
www.undergroundplanet.com
farss wrote on 11/28/2007, 1:01 PM
Two questions I think a lot of us would like answered:

1) When do we get the cameras we ordered a long time ago.

2) When do the bugs get fixed.

Bob.
John_Cline wrote on 11/28/2007, 1:06 PM
"When do the bugs get fixed."

What bugs? Maybe I haven't been paying attention.
farss wrote on 11/28/2007, 1:31 PM
1) Vignetting. Only appears in the upper LH of the frame at certain focal lengths. Might be related to the operation of the OIS.

2) Cannot Proceed error messages with certain menu items.


Checkout the XDCAM EX area at DVInfo.

Bob.
MUTTLEY wrote on 11/28/2007, 3:27 PM

Don't know about the bugs and I have only rumors on the other. From what I could gather orders are going to be fulfilled pretty slow depending on who and where you ordered it from. That the Sony retailers are only getting a few in a piece and then will only be getting one per week till more come in. Take it for whatever it's worth, not saying this info is correct, only that it's the info I got.

- Ray
www.undergroundplanet.com
Serena wrote on 11/28/2007, 8:05 PM
Slow deliveries may be indicative of QC or firmware issues, and if so I'm content to wait while Sony solves any such problems.
DJPadre wrote on 11/28/2007, 8:24 PM
I also have it on very good authority that the CMOS itself has indeed inherited the Rolling Shutter issues found amongst CMOS based imagers..
John_Cline wrote on 11/29/2007, 1:36 AM
I do a lot of fast motion stuff with the V1 and it has the "rolling shutter" issue, too. Only thing is that I've never seen it happen on any of my footage. Seems like the whole "problem" has been blown way out of proportion.

John
megabit wrote on 11/29/2007, 1:40 AM
The vignetting problem is so obvious and striking I just can't believe it could have passed the design check and final QC stages. I even tend to think that with large companies like CNN etc. buying this camera in hundreds, only those flawed are on purpose being sneaked to general public like use in order to put some halt on the orders!

My problem is I have already paid the full price for it:(

AMD TR 2990WX CPU | MSI X399 CARBON AC | 64GB RAM@XMP2933  | 2x RTX 2080Ti GPU | 4x 3TB WD Black RAID0 media drive | 3x 1TB NVMe RAID0 cache drive | SSD SATA system drive | AX1600i PSU | Decklink 12G Extreme | Samsung UHD reference monitor (calibrated)

Coursedesign wrote on 11/29/2007, 2:36 AM
I see no reason to get a heart attack over odd rumors at this stage, and I particularly don't see that Sony would risk its reputation by getting a class action lawsuit going over defective goods.

Just relax and be happy you'll be one of the first to get it!

megabit wrote on 11/29/2007, 2:44 AM
These are no rumours, but facts - just take a lok at the screengrabs on DVINFO. And Sony is not risking anything; if this was not fixable they wouldn't release the camera for sure! But of course they want to limit the number of cameras that they'll need to fix - hence the limited supply.

IMHO of course :)

AMD TR 2990WX CPU | MSI X399 CARBON AC | 64GB RAM@XMP2933  | 2x RTX 2080Ti GPU | 4x 3TB WD Black RAID0 media drive | 3x 1TB NVMe RAID0 cache drive | SSD SATA system drive | AX1600i PSU | Decklink 12G Extreme | Samsung UHD reference monitor (calibrated)

Serena wrote on 11/29/2007, 4:18 AM
People get carried away and I wish people would do well set up tests. The stuff I've seen on DVinfo are random shots of living rooms and whatever. I've just been watching air show sequences shot with the EX and I see no vignetting. But again we don't know the technical details and flash hardly has the resolution required. Sony will not let out a basically faulty professional camera, although it might well be that problems have been discovered after the first release (I note the very low serial numbers of those received ---- #3, for example). If so, suffering late delivery is probably a very good thing. I'm surprised that we're getting so much of the "Chicken Little" postings.
Serena wrote on 11/29/2007, 3:56 PM
The "cannot proceed" issue mentioned by farss (and subject of chicken littling on dvinfo) has been solved by reading page 19 of the manual (see dvinfo).
apit34356 wrote on 11/29/2007, 4:14 PM
Serena and Coursedesign position about "rumors and errors" about the PMW-EX1 is the way to go in my opinion. I don't have a PMW-EX1 in front of me,(that and a red on the Christmas list), but the limited exposure that I had with the camera last week, then 4 months ago, I see no real issues but I'm not a real cameraguy, more of an engineer who enjoys toys. I think Coursedesign, Serena, Spot, Pat, and few others on this forum have a better handle of real daily use issues of these cameras.
farss wrote on 11/29/2007, 6:26 PM
It's solved but not fixed.
"Cannot proceed" is a very poor choice of words, the implication of that phrase is something is wrong. "Function currently disabled" or a similar phrase would be much better.

That I know sounds like nitpicking but I regularly have to deal with clients who've been befuddled by confusing terminology. We had one irate client insist a piece of gear was defective because the battery light was red i.e. the battery was flat. On this piece of kit the LED blinks when the battery is flat, on most gear green is OK, red = problem.

Bob.
Serena wrote on 11/29/2007, 7:18 PM
Yes, that is the trouble with words ( and symbols and lights) having more than one interpretation. When I first started video editing (Vegas 5, no less and naturally without reading the manual) "ripple" was something I thought rather stupid and avoided: why would I want a ripple effect on a cut? So while "cannot proceed" sounds fairly alarming I expect in Japanese it is more readily understood. However like "ripple" (none of the English meanings have any relevance to editing or video -- see OED) once we understand the peculiar contextual meaning of "cannot proceed" then I don't have a problem with that.
MUTTLEY wrote on 11/30/2007, 2:06 AM

"It's solved but not fixed." Hahahahahahhaha!!! Yes, I really did laugh that hard!!! Sorry on this one farss but it is neither solved nor fixed cuz it was NEVER BROKE!!! Omg,too funny, either you were just having a fun silly moment or a really bad day. If it was the latter, sorry for poking fun and laughing so hard but egads, that's just kind of ridiculous. It was in the manual!!! Okay, alright, I'm still laughing but I'll stop.

Can't wait ta get my camera!!!

- Ray
www.undergroundplanet.com
farss wrote on 11/30/2007, 3:29 AM
I'm glad you got a laugh out of it however bad interface design is no laughing matter. In this case it's not bad design, it's bad testing. The original message was likely very clear in Japanese and the translation is probably reasonable enough but it wasn't tested on people whose first language was English. That a few users were convinced there was something broken is proof of that. It's something that's easily fixed and I'd imagine once the dust settles Sony will address it.

And I too can't wait to get my camera either and a little birdy told me today it could be very, very soon.

Bob.
megabit wrote on 11/30/2007, 9:48 AM
I must have met the same little birdy, as - after several weeks of not even answering my emails - my UK supplier has just notified me the shipment will be sent "really soon now".

As to the "Can not proceed" wording: English is not my first language, but I agree with you one hundred percent, Bob. It suggets something gone wrong, while in fact it's a normal situation which should be communicated to the user with something like "Invalid in current mode", or "Disabled in this mode".

Piotr

AMD TR 2990WX CPU | MSI X399 CARBON AC | 64GB RAM@XMP2933  | 2x RTX 2080Ti GPU | 4x 3TB WD Black RAID0 media drive | 3x 1TB NVMe RAID0 cache drive | SSD SATA system drive | AX1600i PSU | Decklink 12G Extreme | Samsung UHD reference monitor (calibrated)

Serena wrote on 11/30/2007, 1:36 PM
>>>>something like "Invalid in current mode", or "Disabled in this mode".<<<<

Of course I agree completely, but bad interface design is so common that I'm never surprised by it even though it annoys me. In the case of this camera, which many people are waiting on, the forums are full of speculation about lack of delivery and whether Sony is conspiring in some evil plot (I'm exaggerating, of course. To some extent). It has been observed often enough that interfaces should never be designed by the engineers who designed the equipment (old example: video recorders) or user manuals be written by them. Once you get used to something like "cannot proceed" you forget its lack of clarity for a new user. What does annoy me in the current XDCAM EX postings is that the people who think they've found a problem attempt no systematic analysis and instead launch into endless speculations. I guess most of the speculation is by people who've yet to get an EX.
MUTTLEY wrote on 11/30/2007, 3:25 PM
"bad interface design is no laughing matter"

Just about anything can be a laughing matter depending on your attitude and it just seems to me that you're taking this wayyyy to seriously and not seeing the humor. The fact that it was IN the manual and simply overlooked while people were freaking out that their camera may be messed up to me is borderline hilarious. That is clearly an ID1T error. There is a learning curve with just about any program or piece of equipment and it seems a bit ridiculous for anyone to be huffy about a choice of semantics when, again, it was in the manual. There's a reason "RTFM" has become such a popular initialism, this is a clear example that if ever that if ever I saw one. So yea, with all do respect (and I do mean that sincerly), this whole thing is still pretty darn funny to me.

- Ray
www.undergroundplanet.com
mark2929 wrote on 12/1/2007, 5:56 AM
Serena you have seen the footage where vignetting occurs and the focal lengths where it happens. Assuming its not the matte box as one person I believe has said it is. But then the problem would occur when the lens is wide and not when zooming in. And more have said it isnt. Isnt it a clear case of vignetting? At least on some cameras? In which case the lens must be faulty? OK This is speculation of what is seemingly cause and effect. So what else do you think it could be?
apit34356 wrote on 12/1/2007, 6:48 AM
"In which case the lens must be faulty?" Mark2929, I think a defective lens out of the factory would be a really raw event at this price range and as important this camera is to the DXCAM line. But if the camera was subject to extreme hot or cold and received a high G impact during a this large temperature shift, one of glued elements may have popped/shifted(a couple of microns)---- this would be a rare event but could created a "zone" in zooming. But like you, I doubt its the camera, probably someone's screwing with the footage to damped the excitement about the EX1.
DJPadre wrote on 12/1/2007, 7:12 AM
i forgot to ask this at the launch, but can anyone confirm whether the EX can indeed focus AND zoom at teh same time?