Settings that Cause Noise - DPChallenge Forums

Canon EF 24-70mm f/2.8L USM

06/18/2005 11:00:53 PM · #1

I have been having a lot of problems with noise lately with my rebel. I was wondering several things regarding this;
1. has anyone else had similar probs with the 300D & what, if anything, did you do?
2. What are some settings or other reasons that result in lots of noise, particularly in dark/black places, that aren't caused by a high ISO?
3. Any other reasons/conditions that cause moderate to lots of noise?
and finally,
4. Any thoughts on some tips of removing noise other than Neat Image?

I've been playing around with curves a bit in the raw conversion & it seems to have helped a bit.
Right now I am using cs2 but am a bit unfamiliar with the noise reduction feature.
Thanks in advance everyone!

doctornick

Apple iPhone 13 Pro

06/18/2005 11:06:01 PM · #2

Can you post a few examples and give the settings you used? Hard to tell what the problem is without seeing what it actually is...I never had noise problems with my D-Rebel except at ISO 1600, even then it was easily taken care of with Noise Ninja.

Tamron SP AF 28-75mm f/2.8 XR Di for Canon

06/18/2005 11:32:36 PM · #3

Originally posted by doctornick:

okay. let me fish one out

nico_blue

Canon EOS-5D Mark II

06/18/2005 11:37:23 PM · #4

causes for noise -

high iso
hot temperature
subject with uniform color
wrong exposure settings
cheap sensors (not a prob in your case w/ the 300d)

thats all i can think off right now...

06/18/2005 11:45:48 PM · #5

I for one don't like how neat image looks... so I usually don't noise process my 1600 - 3200 ISO shots. I think they still look great. I've heard they look better printed than on the screen so that's good news to me. I have seen some weird handdone noise reduction by people on other forums that works fairly well. I don't remember how he did it but it takes a long time I bet.

Man_Called_Horse

Canon EOS-300D Rebel

06/18/2005 11:48:14 PM · #6

lacking light as well.

Noise Ninja friend to Canon.

Message edited by author 2005-06-18 23:48:47.

06/18/2005 11:50:52 PM · #7

are the results from NN better than from NI? I cannot stand the plastic look from NI, can anyone post some examples of NN vs NI? 100% crops too?

06/18/2005 11:56:54 PM · #8

here's a shot I took at an event.
(I posted to my pbase account bc the 640 reduction is deceiving & tends to hide a bit of what is really there).
settings are as follows:
exposure 1/60 @ f/4
ISO 100
68mm focal length
I even used an external flash & still got this result.
THis happnes especially when the shot is a bit underexposed.look here

there is more exif info with the pic as well.

Canon EF 24-70mm f/2.8L USM

06/19/2005 12:00:44 AM · #9

sorry but i don't see anything wrong with that shot :-/

doctornick

Apple iPhone 13 Pro

06/19/2005 12:03:22 AM · #10

Originally posted by Rooster:

Uh Noise? I don't see any noise!

Message edited by author 2005-06-19 00:03:50.

06/19/2005 12:06:31 AM · #11

it's mostly in the background. in fact everything other than the subject has a lot of noise.
Look at it in the original size here.

Message edited by author 2005-06-19 00:07:37.

Canon EF 24-70mm f/2.8L USM

06/19/2005 12:07:50 AM · #12

I wouldn't say it has a lot of noise... Hardly any if you ask me.

doctornick

Apple iPhone 13 Pro

06/19/2005 12:10:20 AM · #13

I did look at the Original file, there is a little bit of noise in the shadows but that's to be exppected. Nothing wrong with your camera. That shadow noise won't even appear on a print. If you shoot RAW you can get rid of that shadow noise quite easily. One pass in Noise Ninja also removed it.

faidoi

Pentax K10D

Pentax DA 18-55mm f/3.5-5.6 AF

06/19/2005 12:13:56 AM · #14

I wonder if there's a new firmware that hasn't been uploaded yet.

06/19/2005 12:14:08 AM · #15

cool. i did shoot that in raw & then coverted it. so nothing wrong with my settings or anything eh?
Still, I find it a bit annoying & am wondering if there is something I can do b4 editing to reduce it a bit.

I have others that have a lot of noise in places were it is black. for instance, lots of folks wore black * I had to do a butt load of post processing to get the noise out. Kind of a pain ya know?

BTW, thanks so much guys. I really, really appreciate the feedback & time.
:)

06/19/2005 12:33:16 AM · #16

Maybe you could overexpose 1/3 and then the noise will be slightly less in the shadows?

06/19/2005 12:35:55 AM · #17

i try that. thanks again K!
peace

Man_Called_Horse

Canon EOS-300D Rebel

06/19/2005 12:36:10 AM · #18

Originally posted by kyebosh:

are the results from NN better than from NI? I cannot stand the plastic look from NI, can anyone post some examples of NN vs NI? 100% crops too?

used NN on this.

Man_Called_Horse

Canon EOS-300D Rebel

06/19/2005 12:39:51 AM · #19

Originally posted by kyebosh:

Maybe you could overexpose 1/3 and then the noise will be slightly less in the shadows?

yeah, I like to take readings on grass during sports shots. then in AV mode, I over expose 1/3 to 1/2. on a overcast day I will be at around 1600, on a sunny day, 100 iso.

Message edited by author 2005-06-19 00:40:17.