Without seeing a photo, or knowing your settings...Grain usually implies a high ISO setting.Take a moment to Read The Fine Manual, and seeif your ISO is set above the minimum settingWarm regards,DOF..
Some questions:What software are you using to view the images?.
How are you viewing your images on the screen, at 1:1 resolution ("actual pixels") or "Fit to Window"?.
Do both Raw and JPEG images look grainy?.
What resolution are you shooting at?.
What sharpening setting do you have in the camera? Are you doing any additional sharpening on the computer?.
What is the ISO setting?Chris R..
Just my note - you can't really trust too much on what is on the LCD of the camera. Out of focus shots look focused on the LCD. The screen is way too small to make any determination. If I want to check focus on the LCD, the best I can do is zoom in and see if it still looks fine. I only use the LCD for composition really. I don't trust the color (you can't) and I of course use the histogram to determine exposure.
Post an image too with EXIF data intact. Like other posters have said, noise is usually assoicated with ISO, make sure you don't have it accidently set to 800 or 1600. When converting to JPEG, are you doing the best image possible for the JPEG? Lower quality JPEGs can have compression artifacts and something like noise.Just trying to learn.
Blog: http://novicephotog.blogspot.com/Flickr: http://www.flickr.com/photos/9778447@N07/..
Grain can also be from the exposure not being up high enough, so that later when you get to the pc you then up the exposure in the raw converter to make the image appear normal brightness. what you are also doing is upping the background noise as well along with the image. it would now appear grainy or noisy. are you checking the histogram to make sure the exposure is right?.
As others have said we really need some shots to determine the possible cause and fix. there are too many possibilties..
Please post some of your shots...
Like others said, I'm guessing that the ISO is either set to AUTO and you are shooting indoors without flash, or it is set higher than 800. The rebel should be fine up till around 800 before noise really gets noticeable...
On the next nice bright day go outside, and set your camera on a tripod, 50 yards from your house,manual focus on your houseset ISO to 100Set ap to F8set shutter to auto.
Set timer to 2 seconds and press the shutter. print the pic to see what it is like on paper, they are always ten times better than on the screen, if you have a half descent printerPost the pic on hereif it is still grainy, buy a Nikon d80http://s185.photobucket.com/.../albums/x223/eirianfa2002/?mediafilter=imagesMichael Edward Rudge..