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Need help from DSLR experts

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Doggiedog

Lifer
Pic

I think the ISO is 800. There seems to be a lot of banding near the top. It also appears on a bunch of other pictures I took.

I never noticed this problem until just now.
 
That does look like a sensor problem, but I have never seen that before.

Does it do it at all ISO settings, or only 800+, where the pics are grainy, so you notice it more?
 
Sorry.

Did some more research on the pic.

Its f/2.0 @ 1/100sec ISO800.

I saved it in jpg and had to compress to fit bbzzdd.

The camera is a Canon EOS 20D using a 50mm f/1.4 lens.
 
Originally posted by: shilala
I don't see any "banding". I see a lot of noise because of low light, but no bands of any sort.
Click to expand...

"Banding" is a term being loosely thrown around by the peeps over at DPreview's EOS-20D forum...people making a mountain over an ant hill issue...
 
Originally posted by: shilala
I don't see any "banding". I see a lot of noise because of low light, but no bands of any sort.
Click to expand...

I'm not seeing the banding either.

OP: are you using an LCD or CRT?

[EDIT]I see you've recompressed it, can you cut out some problem areas from the original & post those? Or send me the original & I'll host it for you.[/EDIT]

Viper GTS
 
Originally posted by: Doggiedog
Sorry.

Did some more research on the pic.

Its f/2.0 @ 1/100sec ISO800.

I saved it in jpg and had to compress to fit bbzzdd.

The camera is a Canon EOS 20D using a 50mm f/1.4 lens.
Click to expand...

For an EOS-20D at ISO800, it does seem like more noise than I would expect...but like someone else said, I don't notice the banding...
 
My bad. I looked at the wrong pic.

Its 1/50 sec at ISO 3200 at f/1.4.

That might explain it.

I was freaking out because of a lot of bad looking pictures.
 
Originally posted by: GTaudiophile
Originally posted by: Doggiedog
Sorry.

Did some more research on the pic.

Its f/2.0 @ 1/100sec ISO800.

I saved it in jpg and had to compress to fit bbzzdd.

The camera is a Canon EOS 20D using a 50mm f/1.4 lens.
Click to expand...

For an EOS-20D at ISO800, it does seem like more noise than I would expect...but like someone else said, I don't notice the banding...
Click to expand...

How's about an uncompressed image?
I viewed the pic full size and could see strings of noise running left to right. My guess is that it's just how the pixels landed on compression.
Try a longer shutter and maybe (God forbid) a fill flash.
 
Just for comparison sake, here are two random samples taken with my EOS-20D with Canon 17-85mm F4.0 IS lens.

(100% Crop)

ISO 800
F4.0
1/5 sec.
22.0 mm
IS Enabled

LINK REMOVED

ISO 1600
F5.6
0.5 sec.
53.00 mm
IS Enabled

LINK REMOVED



 
Originally posted by: GTaudiophile
Just for comparison sake, here are two random samples taken with my EOS-20D with Canon 17-85mm F4.0 IS lens.

(100% Crop)

ISO 800
F4.0
1/5 sec.
22.0 mm
IS Enabled

ISO 800 Example

ISO 1600
F5.6
0.5 sec.
53.00 mm
IS Enabled

ISO 1600 Example
Click to expand...

Maybe its my eyes playing tricks on me but the noisy areas look like they have banding.
 
Originally posted by: Anubis
ahh ISO 3200 thats explains just about all of it
Click to expand...

yep... Cameras do weird crap at that high ISO. I don't even like doing 800 on my 300D because of it.
 
Originally posted by: Doggiedog
Originally posted by: GTaudiophile
Just for comparison sake, here are two random samples taken with my EOS-20D with Canon 17-85mm F4.0 IS lens.

(100% Crop)

ISO 800
F4.0
1/5 sec.
22.0 mm
IS Enabled

ISO 800 Example

ISO 1600
F5.6
0.5 sec.
53.00 mm
IS Enabled

ISO 1600 Example
Click to expand...

Maybe its my eyes playing tricks on me but the noisy areas look like they have banding.
Click to expand...

I personally don't see any banding on my DELL 2001FP 😀
 
Originally posted by: GTaudiophile
Originally posted by: Viper GTS
Original Image

Viper GTS
Click to expand...

I see what's talking about now.

Look at where the kid's hair meets his forehead.

I think it may be a drawback to the 20D's CMOS sensor, but I am unsure as to how common it is. Do you have the latest firmware installed? Perhaps do a search for "banding" at these forums'.
Click to expand...

I'll check out the site. I have firmware 1.1.0.

Thanks for the hosting.
 
Originally posted by: GTaudiophile
Originally posted by: Doggiedog
Originally posted by: GTaudiophile
Just for comparison sake, here are two random samples taken with my EOS-20D with Canon 17-85mm F4.0 IS lens.

(100% Crop)

ISO 800
F4.0
1/5 sec.
22.0 mm
IS Enabled

ISO 800 Example

ISO 1600
F5.6
0.5 sec.
53.00 mm
IS Enabled

ISO 1600 Example
Click to expand...

Maybe its my eyes playing tricks on me but the noisy areas look like they have banding.
Click to expand...

I personally don't see any banding on my DELL 2001FP 😀
Click to expand...

no banding on dual 19in CRTs either

 
Originally posted by: Anubis
Originally posted by: GTaudiophile
Originally posted by: Doggiedog
Originally posted by: GTaudiophile
Just for comparison sake, here are two random samples taken with my EOS-20D with Canon 17-85mm F4.0 IS lens.

(100% Crop)

ISO 800
F4.0
1/5 sec.
22.0 mm
IS Enabled

ISO 800 Example

ISO 1600
F5.6
0.5 sec.
53.00 mm
IS Enabled

ISO 1600 Example
Click to expand...

Maybe its my eyes playing tricks on me but the noisy areas look like they have banding.
Click to expand...

I personally don't see any banding on my DELL 2001FP 😀
Click to expand...

no banding on dual 19in CRTs either
Click to expand...

Hmm.

I've got a 21" Sony G500 about 1.5 feet from my eyes. You don't see some banding in the lower left quandrant in the ISO 1600 pic?
 
Originally posted by: Doggiedog
Originally posted by: Anubis
Originally posted by: GTaudiophile
Originally posted by: Doggiedog
Originally posted by: GTaudiophile
Just for comparison sake, here are two random samples taken with my EOS-20D with Canon 17-85mm F4.0 IS lens.

(100% Crop)

ISO 800
F4.0
1/5 sec.
22.0 mm
IS Enabled

ISO 800 Example

ISO 1600
F5.6
0.5 sec.
53.00 mm
IS Enabled

ISO 1600 Example
Click to expand...

Maybe its my eyes playing tricks on me but the noisy areas look like they have banding.
Click to expand...

I personally don't see any banding on my DELL 2001FP 😀
Click to expand...

no banding on dual 19in CRTs either
Click to expand...

Hmm.

I've got a 21" Sony G500 about 1.5 feet from my eyes. You don't see some banding in the lower left quandrant in the ISO 1600 pic?
Click to expand...

Do a search as I recommended. Some serious banding pics over there to clearly demonstrate the problem. Then compare yours to that.

If it were me taking that shot, I would have gone all the way to F1.4 and decreased my shutter speed.
 
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