No, you haven't done anything wrong..

The jpegs from the camera have been processed from the raw data to jpeg by the camera and part of that processing is noise reduction..

You'll just have to apply some noise reduction to your raw images when you develop/process them.A member of the rabble in good standing..

Wondchoi wrote:.

As I konw, RAW should be lossless than JPG. But why there is a lotmore noise in my RAW than in JPG?.

Have I done something wrong?.

Need help.

If your JPEG has come from the camera, it will have been processed to reduce noise. There will be settings on your camera to control colour saturation, sharpness, noise reduction, contrast etc. etc. which are applied automatically when the JPEG is created. There are factory defaults but you can change them..

A RAW file has not been processed by the camera at all; it's up to you to do it with whatever software you have (so you have more control over the finished product). Your RAW pic might not look as good as the JPEG to start with, but in your RAW conversion program there will be options to control noise, contrast, colour saturation, white balance etc. etc. and once you have done all those to your satisfaction the result should be as good (or, hopefully, better) as what was done in-camera..

Bear in mind that reducing noise involves smoothing (averaging) of adjacent pixels, so there will be a loss of resolution - so don't overdo it. Often noise is most apparent on smooth areas of the same colour (like a sky, which may look speckly). It is a simple matter to select this area in photoshop and apply noise reduction selectively to aras like this where a loss of detail won't matter because there isn't much..

Hope this helps.

Best wishesMike..

Mike703 wrote:.

Wondchoi wrote:.

As I konw, RAW should be lossless than JPG. But why there is a lotmore noise in my RAW than in JPG?.

Have I done something wrong?.

Need help.

If your JPEG has come from the camera, it will have been processed toreduce noise. There will be settings on your camera to controlcolour saturation, sharpness, noise reduction, contrast etc. etc.which are applied automatically when the JPEG is created. There arefactory defaults but you can change them..

A RAW file has not been processed by the camera at all; it's up toyou to do it with whatever software you have (so you have morecontrol over the finished product). Your RAW pic might not look asgood as the JPEG to start with, but in your RAW conversion programthere will be options to control noise, contrast, colour saturation,white balance etc. etc. and once you have done all those to yoursatisfaction the result should be as good (or, hopefully, better) aswhat was done in-camera..

Bear in mind that reducing noise involves smoothing (averaging) ofadjacent pixels, so there will be a loss of resolution - so don'toverdo it. Often noise is most apparent on smooth areas of the samecolour (like a sky, which may look speckly). It is a simple matterto select this area in photoshop and apply noise reductionselectively to aras like this where a loss of detail won't matterbecause there isn't much..

Hope this helps.

Best wishesMike.

Thank you so much for your knowledge. In this case, why do we need to take RAW? I am using Nikon D80, the software in the package is picture project. In my experience, it is not a powerful software. What kind of programs do you guys use for converting RAW to JPG?..

Mike703 wrote:.

Wondchoi wrote:.

As I konw, RAW should be lossless than JPG. But why there is a lotmore noise in my RAW than in JPG?.

Have I done something wrong?.

Need help.

If your JPEG has come from the camera, it will have been processed toreduce noise. There will be settings on your camera to controlcolour saturation, sharpness, noise reduction, contrast etc. etc.which are applied automatically when the JPEG is created. There arefactory defaults but you can change them..

A RAW file has not been processed by the camera at all; it's up toyou to do it with whatever software you have (so you have morecontrol over the finished product). Your RAW pic might not look asgood as the JPEG to start with, but in your RAW conversion programthere will be options to control noise, contrast, colour saturation,white balance etc. etc. and once you have done all those to yoursatisfaction the result should be as good (or, hopefully, better) aswhat was done in-camera..

Bear in mind that reducing noise involves smoothing (averaging) ofadjacent pixels, so there will be a loss of resolution - so don'toverdo it. Often noise is most apparent on smooth areas of the samecolour (like a sky, which may look speckly). It is a simple matterto select this area in photoshop and apply noise reductionselectively to aras like this where a loss of detail won't matterbecause there isn't much..

Hope this helps.

Best wishesMike.

In the picture project with the Nikon D80, there is no options that allow you to control the noise, contrast, and etc...

If you do a search on this forum you will find huge numbers of threads devoted to this very topic. Briefly....

A RAW file contains all the data from the camera sensor without compression or loss. If a file is converted to JPEG in-camera the compression loses some information. This is not a problem for a well-exposed picture taken in good lighting conditions, but if there are difficulties that need fixing (under or over exposure; harsh contrast; etc.) you will get better results if you do the corrections on the RAW file before finally converting it to JPEG..

Generally, I use JPEG most of the time (99%) for family snapshots and pictures that are going to be printed at 5 x 7 to go in an album. If I am taking something more important (a friend recently asked me to take some pictures of her new baby and of course I wanted to do the best job possible) I will use RAW and take a little more care to ensure that shadow and highlight detail, contrast, white balance etc. are as good as possible. Professionals would only use RAW..

If you are new to digital photography, I would suggest sticking to JPEGs for the moment while you learn how to use your camera and get familiar with it's controls and settings. When you are used to the camera then try playing with RAW files. My experience is that I can't tell the difference between the result from a JPEG out the camera, and a RAW-to-JPEG conversion, most of the time. But once in a while (especially in difficult lighting conditions) RAW will do a better job for you..

There are many programs for processing RAW files. I have Pentax Photo Laboratory which came with my camera, but it is rather slow and not intuitive. I recently discovered Adobe Camera Raw, a free plug-in for photoshop. So if you have Photoshop Elements (version 3 or higher) you can download Adobe Camera Raw for free. I find it simple and easy to use, and once the RAW file has been processed how you like it, you can transfer it to the main editor of Photoshop for the usual other tools with a single click - quick and easy..

Best wishesMike..