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Canon GL Series DV Camcorders
Canon GL2, GL1 and PAL versions XM2, XM1.


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Old September 22nd, 2004, 12:25 PM   #1
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Huge Problem XM2

I bought yesterday a XM2 camcorder from a local dealer with 3000 euros (all taxes included-Bucharest, Romania).
I'm a Film Academy graduated person, I've worked with lots of camcorders and I have a strong reason to believe that there is something wrong with my XM2 camcorder.

I bought this camera for personal projects due to it's "small sized but good equipped" advantages.
I've choosen the camera after a long study of all PDF materials and videos on Canon website, and after hours of testing with it I can say i know the camcorder very well.

Outdoors the camera is working fine, but when it comes to indoors it's a desaster. When I set it to full auto (green zone) there is always a green contour arround objects, specially in high contrast areas. When I capture this images (Avid xpress DV - over firewire) in the computer all the indoor images have a thin green bar on the left side of the screen (no DVD or multimedia target with this camcorder).

The colors are oversaturated (outdoors&indoors). I have to use a custom preset with the color gain turned to minimum(scrolled to the left side) and only then my colors are normal as they should be. Funny thing is that with the color gain turned to minimum I should have a black&white image....but I don't.

I've decided to make some comparation shots to show you the problem more detailed. I've chosen a 1/4" 3CCD camera from Panasonic: NV-MX500 - 1300$ camcorder.The Panasonic is a very bad camcorder for indoors too, but at least it gave a real image with real colors + a lot of grain.

From what I-ve seen after the testings I would say that I have 2 major problems:
1. I thinck that the pixel shift technology is working bad (the green CCD scan)
2. The colors are oversaturated on all images (indoor and outdoor)

So, what I would like to find out: does my camcorder have a factory problem ? (It didn't suffered shocks, at least there are no scratch on it).

Too bad I can't attach the images, they speak for themself.
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Old September 22nd, 2004, 01:48 PM   #2
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Can you e-mail me this pictures Lorand? Send them to rob@ladyxfilms.com

I will put them up for others to see.
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Old September 23rd, 2004, 06:54 AM   #3
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Hi Larand
I bought mine from Germany (I'm romanian) at 2500euros. I got an offer from Bucharest at 4000euros.... (two years ago, true)

I'd like to see some screen shots also
cosmin@tradelabs.ro

Vorbesti romaneste? :)
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Old September 23rd, 2004, 07:06 AM   #4
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I've uploaded Lorand's pictures:

www.visuar.com/DVi/XM2vsMX500-1.jpg
www.visuar.com/DVi/XM2vsMX500-2.jpg

It's nothing I've ever seen, that's for sure!
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Old September 23rd, 2004, 07:41 AM   #5
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Me neither!!!
Looks like a factory return job - there's something very very wrong with that camera.

Robin
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Old September 23rd, 2004, 08:11 AM   #6
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These artifacts are the result of a signal overshoot (time/temporal domain) in the green analog channel. In a DV video camera this defect can only happen in the RGB domain before YUV component transformation. Analog preamps? initial AD conversion? Anyhow wrong and to be sent back!
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Old September 23rd, 2004, 08:11 AM   #7
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Send it to Canon factory service for a complete check-up.
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Old September 24th, 2004, 05:38 AM   #8
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Lorand, if you're in Romania and planing a trip to Timisoara, we could compare your XM2 with mine. (although I'm sure you can find XM2 in Bucharest also).

But I think that you have a real problem there!

I'm just gled I went abroad for mine... I think here we get al the junks not accepted anywere else in the world, at double price :(
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Old September 24th, 2004, 10:28 AM   #9
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hah,

Cred ca ai dreptate...
Am fost azi la service cu ea si abia m-am inteles cu omu care dupa ce i-am explicat problema a inceput cu "domnule, se pare ca nu aveti deloc experienta cu DV...." Mi-a venit sa-i bag mana in gat instant. Oricum el e convins ca o va rezolva cu menu service....eu cred ca va fi nevoit sa o schimbe. Nu stiu de ce dar am o mare impresie ca o sa ajung cu OPC-ul peste ei.


I've been to service with it. The guy is sure that he can fix it with menu service....I thinck he will be very-very dissapointed .
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Old September 24th, 2004, 10:33 AM   #10
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Please keep your posts in english or provide a translation. Thank you for your attention to this matter.
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Old September 25th, 2004, 01:17 PM   #11
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.

The english text in my lat post is the short translated version of the romanian text. I was answering to Cosmin Rotaru who is also romanian. I'll keep romanian comments in the future for the e-mail, ok?

Thancks.
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Old September 26th, 2004, 03:38 AM   #12
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Hmm, adjustable pixelshift size? :)
Looks like, you have to set to lower number in menu. Just kidding..

But, sometimes i also see this effect with my good xm2, so it would be good to switch OFF pixelshift...
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Old September 26th, 2004, 06:39 AM   #13
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Hah!!!

How do you switch off pixelshift???
How does this affect your image in low light?
PLS answer. Do you have to reduce your color saturation indoors ? (my camera gives very saturated colors)
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Old September 26th, 2004, 11:56 AM   #14
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Re: Hah!!!

I mean: "WOULD BE GOOD"

Canon says the technology will increase resolution, but honestly i don't like it. Even in our broadcast sony dvcam camcorder i have found this issue. On the hard edge of some object there is some pink and green shadow. If you go out of focus, you can see this effect even more.
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Old September 27th, 2004, 11:10 AM   #15
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chroma shift, or color shift or bleed (whatever - red being the most afected) is a general issue with DV. XM2 included. I noticed it with my XM2 also. But mostly in low light, on the green chanel
But the pics you posted, Lorand, seems to be taken in good light, with TOO MUCH bleeding...
There was another discusion on this issue:

http://www.dvinfo.net/conf/showthrea...&threadid=7866

Could you find another XM2 user in Bucharest? If it comes to UPC (I know in Timisoara they do a good job) it would be nice if you could show them the "normal" manifestation (with just a bit of shifting on the chroma chanels) vs. the more agravated situation you noticed on your camcorder.

My e-mail adress is cosmin@tradelabs.ro, if you need to talk this outside DVInfo.net (although I feel like is good if others know about those kind of problems, too)
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