Can someone tell me the truth about 20D banding?
Yes, I did a search! I am looking for a definative answer on Canon 20D banding. Some people don't get banding at all. Some people didn't get banding after they upgraded their firmware. There's not been much mention of it here (or I used the search engine wrong) but it has been a hot topic over on dpreview. So why not just go read the dpreview posts? Let's just say I was hoping for a better signal to noise ratio than this hot-topic button seems to generate on dpreview. Any thoughts? Facts?
Jamie
Jamie
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you'll find that there's far less measurebating here on dgrin than on dpreview. i've seen examples with banding, yes. i personally have never experienced it with my 20d. the times i've seen it over on dpr is when someone underexposes then pushes the exposure, then does extreme levels adjustment.
i think that it's a non-issue. plenty of 20d shooters here on dgrin, and it's not come up at all that i recall!
i've printed dozens and dozens of 20d shots - at large sizes, 11x19, and have never seen banding.
does this help?
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Jamie
I agree with andy in that the dpr guys are real measurabators, and that the banding issue is more or less a non issue. I have experienced banding on a couple of occassions, when I have totally blown the shot by severely underexposing it, and then tried to rescue it with post processing. Here is an example:
http://canadian-ann.smugmug.com/photos/13798408-L.jpg
The few times I've experienced it, it has been a shot with the 17 - 85 m.
I have never had this problem when I've gotten the exposure correct or even almost correct. And the 20d shots are so much more responsive to post processing than the sony shots are.
So it is one of those things, like pf and the 828 (and in my case, I've experienced pf a lot more than banding) that does happen but if you didn't read dpr you probably wouldn't realize it!!!!
Glad to see you here - looking forward to seeing you share some shots.
ann
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Jamie
From what i've seen there's no real problem with banding. However prolonged exposure to the 20D has been known to cause cancer.
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http://behret.smugmug.com/ NANPA member
How many photographers does it take to change a light bulb? 50. One to change the bulb, and forty-nine to say, "I could have done that better!"
sash
And by the way, all digital cameras can show "banding" with the adequate (but incorrect) settings. I can get it with the D70, for instance (I've tried !).
As for the measurabators on dpreview: I've posted once my observation that "banding" is also possible in D70 images, and somebody's reply on this issue was that my post was technically incorrect: as banding (in most contexts) refers to apparitions of bands in post-processing. To make that person feel more confortable - if he comes to read this post - I've typed "banding" (between quotes) everywhere in this message, so that it is well understood that there is no confusion. Hope that helps.
Thierry
Sigh.
Jamie
I've shot almost 10,000 images with my 20D, many at ISO1600. I have only seen banding in one shot
Although, it may have been caused by my choice of subjects
http://www.pbase.com/slo2k/image/36208723/original
Steve
laugh it up... for that crack, i think you get to buy the coffee friday morning
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A year ago I never had this stuff. My family told me I was shooting great, too.
In case anyone wants to know, a year ago I was shooting with a Rebel, now it is a 20D, better lenses, too.
ginger (I wonder if I can get ahold of that old brownie I used to use.)
If you can't find yours, Ginger, my mother just shipped mine to me. Given to me sometime in the mid-50s by my Godmother:
"gaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa!"
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It's most noticeable at 3200 with a dark background - I shot a couple concerts and it showed up pretty bad. Less noticeable at 1600 and nose reduction software brings it down to almost unnoticeable levels. It's not in every shot and seems to manifest itself in high contrast areas where the sensor has to handle dark and light right next to each other.
I just deal with it in post
jamie
Hah, I wasn't going to say anything but you forced me to. There was actually a real banding problem with some early copies of the Nikon D200. Nikon has, of course, long since fixed the issue.
I don't know about cancer, but it is likely that putting a camera of any make near laboratory mice would cause cancer. Everything else does.
jimf@frostbytes.com
Banding can happen whenever your exposure is off, high or low, or if you overadjust levels even in the midrange. It's the result of not having enough values to achieve what appears to be a continuous tone.
If you're in Photoshop and looking at a histogram when you pull your exposure up or down a lot, or adjust curves or levels enough, you'll see a sawtooth or broken appearance in the histogram. That's the result of gaps that result from trying to expand the dynamic range, and the likely result is banding. It's possible to detect and reduce banding in software (and most RAW conversion software attempts to do this to a degree) but at a loss of image quality.
jimf@frostbytes.com
Harry, didn't you know that using Nikon equipment gives you COOTIES?
Jamie
Enjoy it in good health. We know you'll have a blast.
Olga