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-   Sony XDCAM EX Pro Handhelds (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/)
-   -   Vignette problem (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/108433-vignette-problem.html)

Serena Steuart December 17th, 2007 04:54 PM

Thank you Adam. In my case the corner darkening is 1 stop (RHS) and is outside the safe area. In these days of LCD displays the concept of safe area is maybe an anachronism. Have also observed that it is difficult to see in real scenes.

Serena Steuart December 17th, 2007 05:08 PM

Quote:

Originally Posted by Bob Grant (Post 793938)
I'm all for making measurements but how to do this?
Perhaps capturing a frame and analysing that with PS would be better?

Yes the waveform shows the effect quite well (and it's variation with zoom) but you need to grab a frame and use PS to actually measure the fall off in each corner. Using the waveform monitor you can locate the worse frame and capture that for analysis.

To record the clip I wound down the projection screen and used only daylight entering the room. Wasn't even, but no steep gradients. You need only to measure relative to an unaffected region, so evenness isn't really required (just slow gradient).

My corners are 1 stop down and all outside the safe area.

Using the blue shy? The sky is not uniformly bright and you do want to expose at f/1.9 . Why do we want to measure? Interest. And to check whether the sky is really falling. Adam's comments are appropriate here.

Carroll Lam December 17th, 2007 05:14 PM

1 Attachment(s)
I called Sony tech support again today to check on the status of the vignetting problem and got the following info:

-I was sent the attached pdf memo from Sony discussing the problem.

-I was told that Sony support is expecting pre-paid shipping labels that will be sent to owners of cameras exhibiting the problem. These labels will ship the camera off to Sony for re-alignment of the lens. The person I spoke to said they were expecting the labels this week and would overnight them to owners.

-He took my name, address, email address, and s/n. I received the attached memo a few minutes later.

So...if one has a camera with the vignetting problem I would make sure Sony tech support knows about it so they can send you the shipping label.

Carroll Lam

Chris Hurd December 17th, 2007 05:36 PM

Thanks Carroll -- your post has been copied and stickied at http://www.dvinfo.net/conf/showthread.php?t=110466 for greater visibility.

Contents of PDF linked in previous post:

Quote:

To our loyal Sony PMW-EX1 Customers:

Since the launch in November, the PMW-EX1 has been received extremely well within the
market with a huge level of order commitments and very positive feedback from customers
using the product.

Sony regrets to inform you that there have been a small number of reports of a specific lens issue
with the camera, which upon further investigation by our engineering team, has been identified
as ‘unbalanced light falloff’ at the edge of the picture. The cause of this has been identified as
being a result of a mis-alignment of the center of the lens and the light axis. Sony takes such
technical matters very seriously and although this issue has only been seen on a very small
percentage of the units supplied worldwide, Sony has implemented a full review and
modification of the manufacturing process in order to alleviate any re-occurrence of this issue.
Sony will re-align any camera exhibiting the symptom described above at no charge to you at
the highest priority. If your camcorder exhibits the symptom described please call our Product
Operational Support Center at 1-800-883-6817, option 2-5-2 for advice on how to proceed.
When calling, please be prepared to supply your camcorder’s serial number, as well as place of
purchase.

Sony would like to thank you for your continued trust in our commitment to you as your vendor of
choice when investing in high quality professional video tools, and for your patience regarding
this matter.

Thank you.

Mel Medina
Senior Product Marketing Manager
Professional Video Products
Broadcast and Production Systems Division

Graeme Fullick December 17th, 2007 05:39 PM

And to all Australian owners I received the same story this morning. A lens alignment jig (or several jigs) is/are being sent to Australia to fix the problem ASAP. So a good response from Sony, and a reassuarance that it was a very minor problem that could be very rapidly fixed.

Thanks to Chris for re-opening the thread as I am sure that it has facilitated the rapid resolution of this issue, with a very positive response from Sony.

Graeme Fullick December 18th, 2007 12:31 AM

An even better response from Sony - I have been offered a new replacement camera. Can't beat that for service.

Sony have done well here.

Christopher Barry December 18th, 2007 03:47 PM

Graeme, do you get to keep using your current EX1 camera, pending replacement?

Graeme Fullick December 18th, 2007 04:21 PM

That is a definite yes Christopher, but I wont have to wait long - Sony ordered the camera from Japan as soon as they heard of my problem, and it is waiting to clear customs as I speak. I am told that I will have it in 1 -2 days. That is service!

My Dealer has been really excellent in getting all this done - Macrays in Sydney. Chris if this is against Forum rules please delete this statement - but I don't think there are any DV info sponsors in Australia.

Chris Hurd December 18th, 2007 04:24 PM

It's all good. Thanks for the updates Graeme,

Christopher Barry December 18th, 2007 05:26 PM

Thanks Graeme. I have two EX1's waiting to ship from Tasman AV, and will try this approach for them to be replaced by Sony straight up, since Serena and John's appear to have the vignette issue from the same batch. Thank you for the heads up.

Chuck Wall December 19th, 2007 08:23 AM

Sony contacted me yesterday, I was told they are sending out shipping labels and that the EX1 wil need to be shipped to a service center. I was told the turn around is 5 business days..

No exchange was offered.

Chuck

Juan Martinez December 19th, 2007 11:23 AM

Ex1 Vineting
 
Hello, I am Juan Martinez, a Senior Manager of Sony Electronics. I just want to point out that a very small percentage of cameras exhibit this condition.

Sony takes quality issues very seriously, so we set optical bench at several locations that can realign the lens in about ten minutes. Any person that suspects that their camera is affected should contact our Product Operational Support Center hotline at 1-800-883-6817, option 2-5-2, for advice on how to proceed. When calling, customers should be prepared to supply their camcorder’s serial number.

I would like to put the Ex1 lens in perspective.

It is the first hand-held camera to offer full manual or automatic control. The lens has absolute markings for the iris zoom and focus. There is a mark for the focal plane on the right side of the camera.

From the optical perspective the lens is very notable:
1- Widest and lens for any hand-held camera.
2- Chromatic aberration compensation, not only for the lens but also when the wide angle adapter is utilized.
3- Virtually no ramping (does not lose stops as you go telephoto)
4- Virtually no breathing (image does not change dimension when focusing)


Juan Martinez

Piotr Wozniacki December 19th, 2007 11:52 AM

Mr. Martinez,

Thank you very much for your personal reassurance given to the EX1 early adopters in the USA. I'm located in Europe, and have been waiting for the delivery of my pre-ordered EX1 for over 2 months now. Can you tell us the European customers, whether new cameras will already be free from the vignetting problem - or is there a number of units on the way to European dealers that will need re-alignment?

With Regards, and Best Christmas Wishes from Poland!

Piotr Wozniacki

Paul Joy December 19th, 2007 12:09 PM

Hi Juan

Firstly I'd like to thank you for taking the time to respond on this forum, it is very much appreciated by myself and I'm sure by other forum members too.

I'm sure that most of those who have been lucky enough to try the EX1 will agree that the lens is a wonderful advancement over previous lenses on this type of camera and that the positives you list are a great benefit.

In terms of the issue that has effected some of us, can you confirm that the ten minute procedure you describe removes the visible corner cropping in the lower/mid range completely?

Thanks again for responding here, I hope you are not too overloaded with questions.

Best regards

Paul.

Steven Thomas December 19th, 2007 03:59 PM

Mr. Martinez,
Thank you for taking the time and sharing this information with dvinfo.
The PMW-EX1 has really brought pro camera quality to the hand-held market.
I am very impressed on fast Sony has addressed this issue. This quick response really shows how professional and dedicated Sony is to their pro CineAlta Division.

Thank you,
Steve Thomas

Carroll Lam December 19th, 2007 06:49 PM

I too wish to thank you Mr. Martinez for providing a Sony response here on the forum. I am one of the early adopters whose camera exhibits the vignetting.

The Sony tech support staff has been very responsive to our calls to them regarding this problem. Kudos to them also.

Carroll Lam

Christopher Barry December 19th, 2007 09:04 PM

Is this a physical or firmware adjustment?

Bob Grant December 19th, 2007 09:45 PM

Quote:

Originally Posted by Christopher Barry (Post 795626)
Is this a physical or firmware adjustment?

Given that Sony Au are waiting for a jig I'd hazard a guess it's physical.

Chris Hurd December 19th, 2007 10:23 PM

Quote:

Originally Posted by Juan Martinez (Post 795341)
Hello, I am Juan Martinez, a Senior Manager of Sony Electronics.

For those who are not aware, Mr. Martinez is Senior Manager of Technology at Sony Electronics.

Many thanks Juan for posting here -- your presence on this site is greatly appreciated!

Christopher Barry December 19th, 2007 10:38 PM

Quote:

Originally Posted by Bob Grant (Post 795637)
Given that Sony Au are waiting for a jig I'd hazard a guess it's physical.

If that is the case, I do not want to take delivery of my cams sitting at the dealer. I'd prefer to wait for a properly QC batch.

Edit: I am now said to be getting some EX1's that will have been checked by Sony Australia, perhaps another batch/build, swapping out the EX1 units being held for me by my dealer. They shoud be available by the 1st week of January 2008. Looking like a good result.

Spencer Dickson December 20th, 2007 05:36 AM

I wonder how many were manufactured in the first batch? I want to get a second wave camera...not a repaired one. Perhaps someone would know how Sony goes about the assembly process and how long it will take for them to be shipping newly built units.

Christopher Witz December 20th, 2007 08:00 AM

I received a call back from Sony... they are shipping me a shipping label and having me ship the camera for the adjustment.

Said it would be a 5 day turnaround.

I mentioned that I'm in the middle of a project where the camera is needed and they said " anytime you like... we will honor the fix as long as it's needed ) I'll have to wait till after the holidays to ship mine.

They also said that the 2nd card will most likely ship sooner than 8-10 weeks.

They thanked me for my patience and said that Sony really wants to make things right for us early adopters.

Bob Berg December 21st, 2007 09:31 AM

Paperwork and camera testing...
 
I, too, got my return paperwork yesterday, but I'm waiting until next week to ship...almost no point in doing so before then with Christmas...and I can't stand the thought of the new beast tumbling down the conveyor belts at FedEx in the last-minute waves of holiday boxes. (I made a film for UPS once about the impact on sorting hubs of late train arrivals...it was VERY eye-opening). It might also be a good idea to give Sony a week or two to get good at doing the fix.

We checked 3 other cameras below S/N 100500 at my dealer yesterday. Our camera and the other 3 (or 4 cameras from the batch of 5 they first received) all exhibited the vignette; one on the top right/bottom right, another two on the top left/bottom left, and the last one on the top left/top right.

The Sony Pro group folks have said there is a mechanical re-alignment and a software update as part of this fix.

Craig Seeman December 21st, 2007 09:45 AM

I picked my camera on Wednesday 12/19. Serial number 100808. So far so good. I wasn't testing under idea conditions though but if I have to look that hard . . .

Steven Thomas December 21st, 2007 09:49 AM

Craig, did you look at the actual captured footage on your computer?

Also, if you have an SDI monitor, you can see the full raster overscan and all.

Craig Seeman December 21st, 2007 10:00 AM

2 Attachment(s)
Test1 is kitchen cabinet. Not quite flat white but you can see the corners look good.

Test2 is my green screen. You can see vignetting but not of the "corner crop" variety others show. There does seem to be a bit more on the right but the picture wasn't flat lit.

Craig Seeman December 21st, 2007 10:16 AM

I checked the above in Final Cut Pro. I then opened the shots in Quicktime Full frame size on my 23" Apple Cinema Display and did the screen grab. Don't have an HD video monitor yet.

Steven Thomas December 21st, 2007 10:24 AM

Craig, I take you slowly zoomed through full wide to tele when looking for the vignetting. I'm sure you heard it's been seen with wide open aperture and focal length between 8 to 25mm
If this is your worst case, it looks good to me.
Picture 2, what was the focal length and aperture set at?

Paul Kellett December 21st, 2007 10:30 AM

It appears that the serial number from each individual cam appears along with the number from each clip.Cam numberxxx 808,clip number 808 xxx

Craig Seeman December 21st, 2007 10:49 AM

F1.9, 8mm. Camera mounted on tripod and hand zoomed through so I could stop at various points with some precision.

Green screen shot was just lit with a china ball we had on the ceiling so I know it's not evenly lit.

I'm going to do more testing though but like I say if it's this hard to find. . .
In November I had checked with the first camera they got in (and they're one of the few [two] Sony authorized service centers so apparently on Sony's word they can fix themselves). That camera had the issue plan as day and looked as bad as some of the worst examples posted here. So I've had another camera I've checked this on. I'm not seeing anything like that on this camera.

A mildly tangential tidbit. If you look on page 15 of the manual where all the parts are identified there's a line that's unnumbered. It says "Cover of the lens control block (See "Note" below.) The note says, "The lens is properly adjusted at the factory. Do not touch the controls of the lens control block." Just a wild speculative hunch but that may be where the tweak is that Sony's doing to fix the issue. Just a "fun" speculation.

Craig Seeman December 21st, 2007 10:51 AM

That's the default . . . on my camera. It's easy to change though in the appropriate menu. When I did testing I wanted everything outside of the test procedure to be at factory defaults.

Quote:

Originally Posted by Paul Kellett (Post 796360)
It appears that the serial number from each individual cam appears along with the number from each clip.Cam numberxxx 808,clip number 808 xxx


Steven Thomas December 21st, 2007 11:58 AM

Quote:

Originally Posted by Craig Seeman (Post 796368)
A mildly tangential tidbit. If you look on page 15 of the manual where all the parts are identified there's a line that's unnumbered. It says "Cover of the lens control block (See "Note" below.) The note says, "The lens is properly adjusted at the factory. Do not touch the controls of the lens control block." Just a wild speculative hunch but that may be where the tweak is that Sony's doing to fix the issue. Just a "fun" speculation.


Hmmmm...
That's interesting.

Hey Craig, glad to hear all is well!

A lot of "on the fence" buyers are probably glad to hear too.

Brian Jansen December 22nd, 2007 10:04 AM

Ok.... I recieved my prepaid label and overnighted to Sony.
Spoke to the engineers on a conference call yesterday.
They confirmed that mine was the first return and would be the first
fix they would atempt. MAN, was I sweating! They explained < in short hand english > that the adjustment that they were going to do is the same adjustment that takes place at the factory before the camera goes out and that it was a routine proceedure. They assured me that the camera would come back as brand new and fully adjusted perfectly. I also explained the power drain on the battery of about 25-30% a day when the camera is powered off, and asked them to look into that issue while camera is there as well. I was promised a return of the camera next friday.

Paul Cronin December 22nd, 2007 02:15 PM

Camera just arrived SN 0100795. Battery is on charger and I will test today.

Larger batteries are on backorder. I was told next week. No problem with cards.

First impression is very compact.

Steven Thomas December 22nd, 2007 05:40 PM

Brian,
You probably know this, but the battery drain issue is all EX1 cameras.
If it's left in the EX1, it will drain dead in two days.

I'm not sure why it's drawing so much current in its off condition, strange.
I'm fairly sure there's no easy fix for this.

Brian Jansen December 22nd, 2007 06:56 PM

yep. I know it's not just mine. None of my other camera's ever drained a battery like that in the off position. It really hosed me when it first happen without a spare to back me up. Sony engineers had not heard of it " so they said" and sounded concerned when I told them how fast it drained. The camera really shouldn't be pulling any juice in the off position and the tech guy was hoping my battery was shipped back so they could check it. Might be a good test to charge a battery full and let it set for a few days OFF the camera to see if it dies on its own? It would maybe help rule out the battery.

Steven Thomas December 22nd, 2007 08:43 PM

Mine seems to hold a charge when not left in the camera, so the camera is definately loading the battery in the off position.

Brian Jansen December 22nd, 2007 11:00 PM

I Agree. I just gave my battery a check and its still full after sitting for 3 days. I "hope" there is something sony can do about this.

Brian Cassar December 23rd, 2007 03:12 AM

One thing to be kept in mind is that even though the power switch of the camera is in the Off position, the lcd monitor still switches on momentarily when the battery battery info switch on the camera (below the handle) is pressed for a few seconds. This might have something to do with this issue.

Paul Cronin December 23rd, 2007 06:41 AM

No Vignetting on my camera.


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