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New Eos 400D dissapointments - banding issues

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I was hoping they would exchange,
seems the're out of stock,
But if they have stock tomorrow, I will try and get an exchange,

the only problem I see is that the extended 3 year genuine canon warranty would be for the old serial number, but I'm sure that could be sorted out.

I'll let you know how it goes tomorrow.
 
Hi there,

Looks like some sort of issue with camera or card. The camera is capable of producing some great ISO1600 prints. I recently printed a portrait for someone at12x18 with noise negligible - only really noticable in shadows. I feel the amount of noise is probably similar to ISO400 film, certainly at that print size anyway. Hope the issue gets fixed, let us know.

Regards,
Roland
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Enjoy Life
 
All 400Ds will show this effect at 1600 when underexposed and the pushed in software too far.

You have not really got a chance with the kit lens it is too slow. IS will not really help unless you are taking landscapes. Your first stop is the 50mm f1.8. It is cheap and glacial in its focusing, at least compared to a USM lens.

Using the Kit at around f4 or f5 you are behind the curve quite literally. At ISO 1600 the 400d is not capable of wide dynamic range. You underexpose and with slow lenses the pressure to do so is strong, then with a slight push voilla noise.

If you wish to use the camera in the dark you need.

1. Better glass (it is the reason the DSLRs exist)
2. Shoot RAW you have a little more playroom.

3. Give up on Picasa as imaging software goes it leaves something to be desired. DPP that comes with the Camera is IMHO an acceptable starting point.

4. Watch the histogram do not underexpose.

This subject was handled here in some depth but since the search engine has given up the ghost it is hard to refer to what has previously been written here.
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“Creativity requires the courage to let go of certainties.”

Erich Fromm
 
I have also not seen this kind of banding at iso 1600 on my 400D or 350D or 300D even when the shot is underexposed and pushed up on PP. This is a problem and you must send it back.
 
My 400D shows exactly the same "problem", but looking at the original picture, normal size, from normal distance I simply do not see any problem. Are you taking pictures of your kids to see details of their hairs, or are yoiu taking pictures to remember their lovely and innocent faces? I'd say that the original picture you took is a bit soft, but a very god ISO 1600 picture.
 
Okay, I don't have an XTi but I have owned different Canons (including some P&S) as well as owning a Panasonic FZ18. I can't say that the banding you are experiencing is normal or not but your comparison photo from your FZ50 is not realistic for comparison purposes simply due to the amount of light available compared to your XTi picture. When you get your camera back (btw, how small is this camera store you used, I haven't seen XTi's out of stock in a long time!) try taking a picture at 1600 iso from both cameras with a challenging lighting scenario similar to your original XTi image...there should be a significant difference in quality.

By the way, since you have "returned" your camera, check the store policy regarding exchanges. Like i said, I can't recall the last time I saw a store out of stock on XTi's (but it was just christmas). Push them for an exchange...they likely can't fix anything or adjust anything unless they are a canon authorized service provider. If it goes back to canon, it will likely be weeks before you see it again.
 
Hope you can get an exchange. There is definitely something wrong. The 400D should not show the banding you have in your photos. Don't know if it's the camera or the CF card.

I just took a shot at ISO 1600 underexposed 2 stops of my laptop keyboard with the 18-55 kit lens at f/5.6 in an unlit room. The histogram showed only a thin band on the extreme left of the display. There was lots of noise, but NO banding. I'm not going to post it here because it would be a waste of bandwidth. The poster that said the banding was 'normal' must also have a defective camera.

Anyways, hope you can get another camera so you can get back to taking pictures.
 
I can do the job :-)

This is my XTi at ISO 1600 with no noise reduction, a bit misfocused bacause of manual focusing:

first 100% image crop is terrible underexposed. only fine micro banding. no issue...
second one is well exposed - no banding

third one - the well exposed - fine banfing on the black coat.(still 100% crop). no issue in full size image, no issue after denoise...
fourth - full image







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Why does he do it?
 
Text mystake....
first two images are OK. third one is this crop:



fourth one is full size :-)
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Why does he do it?
 
PeaceFrog said:
Were you by chance using Ai-servo focusing mode when you took the
shots with the banding?
Click to expand...
Greg, you have me curious. What could AI Servo AF possibly have to do with banding in sensor noise?

To the OP: Might be a moot point if you've already returned the camera, but check your firmware version if you see the problem again. I recall that when I first frequented this forum, there was some talk here of a firmware upgrade resolving some high-ISO banding issues on the 400D. If your camera store doesn't turn stock over frequently, perhaps you purchased a new (as in unused) old (as in early release) camera. Of course, if you really want amazingly clean images at ridiculously high ISO settings, you could pick up a used 5D for two or three times the price of your 400D....

--
geek
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A 'must watch' for forum participants everywhere!
http://www.albinoblacksheep.com/flash/posting
 
don't kill me for the flood

this is with AI servo. A bit worse but still not to call it issue:
(again - 100% crop, no denoise...)



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Why does he do it?
 
In the past I have had trouble with banding when the AF motor of the lens is working during the time of exposure. It is most obvious at higher ISO settings and I have seen it on a number of cameras including the XTi on occasion. I think it might have something to do with the ring USM as if I recall correctly this has pretty much only happened with lenses that have ring USM (70-200mm f/2.8 IS USM for example). I wouldn’t swear to that part though. Anyway I found that when I use single focus at high ISO settings I haven’t ever noticed the banding problems. I only have experienced it sometimes in Ai-servo mode and generally on shots in a burst where focus adjustments are going on during the exposure.

Greg

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http://www.pbase.com/dadas115/
 
That isn't what I had in mind. With my camera it looked a lot like, if not identical to what the OP showed. It didn't happen in every shot and seemed to only happen when the lens was actually in the process of making a focusing adjustment at the time of exposure. In single-shot focus I never saw the banding.

Greg

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http://www.pbase.com/dadas115/
 
I have no USM lens to test it for you... :-D

edit: but if I could... :D :D
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Why does he do it?
 
PeaceFrog said:
Were you by chance using Ai-servo focusing mode when you took the
shots with the banding?

Greg
Click to expand...
Hi Greg,
Yes I was in AI servo mode when I took those shots with banding,
do you think that could have caused it?

Ben
 
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