400D (XTi) Underexposure - Is the issue over? Serial Numbers?

LizR · Oct 17, 2007

14808xxxxx

delenca · Oct 17, 2007

Hi Yaamon,

Thanks! That's great that you got your friend's serial number - that is an important data point - now we have 122.... serial numbers as potentially "safe". Everybody should feel free to update the list - we can call them list v.0.1, 0.2, etc.

As more info comes in, I'll also update it - It's likely imbsysop's camera is a 120... too and probably from Aug. 07 of this year (not UXing either). I'll update the list if I can get him to confirm this.

Thanks again,
-Alex

Yaamon said:
Hi Alex, I updated your list hope you did not mind with my friend
serial number.

Serial # Purchase UX? Repair? Fix? dp_handle
062037180X Dec. 06 Y NJ Y hopkinsg
0430169XXX Oct. 06 Y -- - - frameman
162111XXXX Oct. 07 N -- - - sdk8505
0830XXXXXX Mar. 07 N ? -- -- imbsysop
0120XXXXXX Aug. 06 Y ? -- -- imbsysop
0920413874 Mar. 07 Y NJ Y udaman
??????????? Sep. 07 N -- -- LizR
0720324821 Jan. 07 Y -- - -
Playsinthedirt
0520101655 Dec. 06 Y Ont(Canada) N(replaced)Yaamon
0320107697 May 07 Y Ont(Canada) Y Yaamon
1220613580 June 07 N Toronto (My friend
camera)
053015XXXX ??????? Y -- -- danwalker

--
Canon XTI and a Fuji F31

delenca · Oct 17, 2007

imbsysop said:
Yaamon said:

Hi Alex, I updated your list hope you did not mind with my friend
serial number.

Serial # Purchase UX? Repair? Fix? dp_handle
062037180X Dec. 06 Y NJ Y hopkinsg
0430169XXX Oct. 06 Y -- - - frameman
162111XXXX Oct. 07 N -- - - sdk8505
0830XXXXXX Mar. 07 N ? -- -- imbsysop
0120XXXXXX Aug. 06 Y ? -- -- imbsysop

Click to expand...

Think the Aug one should be 120XXXX and it is not ux'ing

Mine is ux'ing, not fixed by a first repair .. will send it in to
another repair shop .. FWIW

Ah! That makes more sense. So I had them reversed in the list above, right? Can you please confirm that this is correct (below)? Also, just out of curiousity - do you know where your first repair went to? (though considering also as an additional factor besides location that they might not have had the tools to repair it yet then).

0830XXXXXX Mar. 07 Y ?? N imbsysop
120XXXXXXX Aug. 07 N -- -- imbsysop

THanks,
-Alex

Bambi Brown · Oct 17, 2007

Mine has never had an underexposure problem at all. Purchased new in August 2006. serial #320105xxx

Duwane Huffaker · Oct 17, 2007

Last summer I purchased a 400D for people shooting (also have 5D). When I discovered underexposure in comparison to a 350D I gave my daughter I tried this: switched metering mode from evaluative to center weighted and use either +i/3 or +2/3 exposure compensation depending on shooting situation. So far, most exposures have been acceptable.

Just a suggestion....
--
thezero

Bambi Brown · Oct 17, 2007

Wile E · Oct 17, 2007

If there was a problem, Canon probably fixed it in silence and the newer cameras will be OK. I bought one three weeks ago and the exposure is fine (of course this is no guarantee

)

RW

stomar · Oct 17, 2007

I bought my XTi on January 30, 2007 from B&H Photo and it exhibited the underexposure problem too.
SN#: 062038xxxx.

Was successfully repaired by the Canon Service center in Jamesburg, NJ about a month ago.

Stomar

khoss · Oct 17, 2007

I only got it this past spring and from a dealer with great turnover to boot (B&H). As a matter of fact I'm getting the most accurate exposure I've ever gotten from ANY camera. My 350D Overexposes a bit.

I tend to believe the theory that manufacturers quietly fix problems (or tighten quality assurance) over a period of time. Certainly more economic then continuing to service them.
Regards,
Kurt
--
For some random samples:
http://www.pbase.com/khoss/

Dave Lewis · Oct 17, 2007

Yes that's true and I do regard my XTi as exposing correctly according to the way it is set up. Like you say, I routinely dial in 1/4 to 1/3 minus exposure compensation with all my cameras. I think that has always been best for my bright sky Montana shooting. Back in the D30 and D60 days, though, it probably wasn't necessary.
--
Dave Lewis

imbsysop · Oct 17, 2007

delenca said:
imbsysop said:

Yaamon said:

Hi Alex, I updated your list hope you did not mind with my friend
serial number.

Serial # Purchase UX? Repair? Fix? dp_handle
062037180X Dec. 06 Y NJ Y hopkinsg
0430169XXX Oct. 06 Y -- - - frameman
162111XXXX Oct. 07 N -- - - sdk8505
0830XXXXXX Mar. 07 N ? -- -- imbsysop
0120XXXXXX Aug. 06 Y ? -- -- imbsysop

Click to expand...

Think the Aug one should be 120XXXX and it is not ux'ing

Mine is ux'ing, not fixed by a first repair .. will send it in to
another repair shop .. FWIW

Click to expand...

Ah! That makes more sense. So I had them reversed in the list above,
right? Can you please confirm that this is correct (below)? Also,
just out of curiousity - do you know where your first repair went to?
(though considering also as an additional factor besides location
that they might not have had the tools to repair it yet then).

0830XXXXXX Mar. 07 Y ?? N imbsysop
120XXXXXXX Aug. 07 N -- -- imbsysop

That's correct ..

My repair went to the main? best known repair shop in The Netherlands. .. only half a repair ..
--
if needed, email me at : [email protected]
Horum Omnium Fortissimi Sunt Belgae !
(CanFT-QL)Can400DSonH5CanA520-M3358-DH1758

imbsysop · Oct 17, 2007

Dave Lewis said:
Yes that's true and I do regard my XTi as exposing correctly
according to the way it is set up. Like you say, I routinely dial in
1/4 to 1/3 minus exposure compensation with all my cameras. I think
that has always been best for my bright sky Montana shooting. Back in
the D30 and D60 days, though, it probably wasn't necessary.

By Jove I wish I could say the same :-D :-D

--
if needed, email me at : [email protected]
Horum Omnium Fortissimi Sunt Belgae !
(CanFT-QL)Can400DSonH5CanA520-M3358-DH1758

delenca · Oct 17, 2007

Just to be sure, when you say last May, it means May 07?
THanks,
-Alex

Dave Lewis said:
0920406xxx
--
Dave Lewis

delenca · Oct 17, 2007

no text

delenca · Oct 17, 2007

no text

Dave Lewis · Oct 17, 2007

Yes, about the middle of the month.
--
Dave Lewis

StrykeBack · Oct 17, 2007

this is my first major camera. 400D purchased the end of August 07. at a Bestbuy in central coast California.

serial number starts 14208xxxxx

Indoors the camera works great and its only outdoors at the beach that I have trouble with unders and overs so I believe thats my own mistakes trying to cram the sky and dark hills in at the same time

So I'd consider mine good til otherwise noted. This whole reading of issues really worried me but glad I hear most new batches are alright.

delenca · Oct 17, 2007

Ok,

Here's the updated list. Please feel free to edit it as you wish. Basically it looks more and more like the new batch of XTi are exposing correctly. At least 7 people who have bought the XTi/400D since May/June 07 report no underexposure(UX) problem at all. As far as serial numbers, Dave Brown reports that 0920406xxx bought in May 07 does not UX, although he goes on to say that he prefers underexposure anyway... Also, udaman with a slighly newer serial # (0920413874) reports a UX issue, which was successfully fixed in NJ. So a slighly higher number may be safer. The next number on our list is 120xxxx, showing no UX. So somewhere between 09xxx and 120xxx is probably when the new, "safer" batches began being produced.

This has been a helpful exercise for me - I not only feel more confident in recommending the 400D to my friend but I would consider it myself now, especially, as someone noted, if you buy from a vendor with high turnover, like B&H. I hope this will be of use for others too! Thanks for all the contributions and feel free to add more data so we can try to narrow down the serial numbers further!

Cheers,
-Alex

Serial #.... Purchase.. UX?.. Repair?.. Fix?.. dp_handle
062037180x.. Dec.06.... Y.... NJ....... Y..... hopkinsg
0430169xxx.. Oct.06.... Y.... --....... -..... frameman
162111xxxx.. Oct.07.... N.... --....... -..... sdk8505
0830xxxxxx.. Mar.06.... Y.... Netherl.. N..... imbsysop
120xxxxxxx.. Aug.07.... N.... --....... -..... imbsysop
0920413874.. Mar.07.... Y.... NJ....... Y..... udaman
14808xxxxx.. Sep.07.... N.... --....... -..... LizR
0720324821.. Jan.07.... Y.... --....... -..... Playsinthedirt
0520101655.. Dec.06.... Y.... --....... -..... Yaamon
0320107697.. ??????.... Y.... --....... -..... Yaamon
??????????.. Jun.07.... N.... --....... -..... Yaamon
053015xxxx.. ??????.... Y.... --....... -..... danwalker
0920406xxx.. May.07.... N.... --....... -..... Dave Lewis
0320105xxx.. Aug.06.... N.... --....... -..... Bambi Brown
??????????.. ??????.... Y.... NJ....... Y..... JerryG1
??????????.. Oct.07.... N.... --....... -..... Wile E
??????????.. May.07.... N.... --....... -..... khoss
14208xxxxx.. Aug.07.... N.... --....... -..... StrykeBack

lightstore · Oct 17, 2007

I got mine October 2006 from B&H Photo. It has never had a problem. number is 03201062XX

imbsysop · Oct 18, 2007

delenca said:
Just to be sure, when you say last May, it means May 07?
THanks,
-Alex

No other option possible

Camera was announced 24 aug 2006 ergo it didn't exist May 2006 :-D

--
if needed, email me at : [email protected]
Horum Omnium Fortissimi Sunt Belgae !
(CanFT-QL)Can400DSonH5CanA520-M3358-DH1758

400D (XTi) Underexposure - Is the issue over? Serial Numbers?

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