HOW DO WE DETECT "NOISE" IN A PHOTO?

Sirs,
1 How do we detect NOISE in our photos?
2 Can we get rid of it in camera?
3 Which software can solve this problem best?
Be regretful for all your replies.

Please don't use caps in your title. It seems as if you're screaming at us.

Here are some examples of image noise in photos. You can use long-exposure noise reduction in camera, but if you shot at high ISO then that isn't the best option. Many people use Noise Ninja to get rid of it. I use Nik Dfine 2.

1) Weird question. I guess with our eyes?
2) You can't completely eliminate noise but using the lowest ISO possible and exposing properly will minimize it
3) Many programs can reduce noise. I use Lightroom 4's noise reduction since I'm already using the software anyway

Noise is not the problem most pixel peepers and obsessive compulsive types make it out to be.

Sir,
I am sorry. I would never do it again - I just learn from you that it is not polite to do that on this website which I just stepped in. Thank you for your assistance; I would study about how to get ride of the noise in the link you provided.
Langin

Langin wrote in post #15926464
Sir,

There are a lot of ladies in these forums.. Even though your intentions are probably positives, probably best to not start your posts assuming everyone is a Sir...

over expose by 1/3 stop and bring back in post. NEVER UNDEREXPOSE!

Langin wrote in post #15926464
Sir,
I am sorry. I would never do it again - I just learn from you that it is not polite to do that on this website which I just stepped in. Thank you for your assistance; I would study about how to get ride of the noise in the link you provided.
Langin

Don't worry about it. Participation is what's important.

Hopefully your question has been answered?

Best Regards,

Perhaps you could try taking pics in the library?


Sorry, I couldn't help myself.

Tell us what body you are using and at what ISO and we'll tell you if there is too much noise there or not. OK, too much might be subjective. I use Neat Image to reduce noise in pix. Gene

Langin wrote in post #15926464
Sir,
I am sorry. I would never do it again - I just learn from you that it is not polite to do that on this website which I just stepped in. Thank you for your assistance; I would study about how to get ride of the noise in the link you provided.
Langin

For your info
It's not just this website. It's basic netiquette that applies to all websites and email as well.

Noise can be seen with your eyes in your photos - it appears as a "grainy" texture, more often in the darker or shadowy areas of your photos. You can avoid getting noise in your photos by keeping your ISO as low as possible and by not underexposing your photos and pulling them back up in post processing.

But, there will be times when you must use a higher ISO to get a more acceptable shutter speed or you underexpose a critical shot and your photograph will have noise. There are many programs that can aid in cleaning this up - my preference is Nik Software's Dfine but I've heard others talk about Neat Image and Noise Ninja.

Some cameras have a setting to remove high ISO noise but Ive always found the results turn out better with this setting turned off and deal with the noise in post processing.

A few generations back, we just saw it and had to work with it or fight it.

now we have people that see it everywhere and break out the 100-500% crops and spectrum anylizers to find it.

But really, noise is like the Higgs particle on some modern Cameras, totally invisible most of the time, but we still have a dedicated group looking for it

CyberDyneSystems wrote in post #15927887
A few generations back, we just saw it and had to work with it or fight it.

now we have people that see it everywhere and break out the 100-500% crops and spectrum anylizers to find it.

But really, noise is like the Higgs particle on some modern Cameras, totally invisible most of the time, but we still have a dedicated group looking for it

Totally right. I often use LR 4 to reduce noise at 100% viewing then when I go to normal view and look at before and after I can't tell a bit of difference. I certainly don't spend a lot of time on it-just a few seconds.

SMP_Homer wrote in post #15926598
There are a lot of ladies in these forums.. Even though your intentions are probably positives, probably best to not start your posts assuming everyone is a Sir...

c'mon...give the guy a break !

CyberDyneSystems wrote in post #15927887
A few generations back, we just saw it and had to work with it or fight it.

now we have people that see it everywhere and break out the 100-500% crops and spectrum anylizers to find it.

But really, noise is like the Higgs particle on some modern Cameras, totally invisible most of the time, but we still have a dedicated group looking for it

they also see such things as "microcontrast" which did not exist a few years back !