When I edit photos it usually makes them look grainy. *HELP*

What could cause this? Is there a way to stop this from happening?

I usually use shadow (10) /highlight (15), brightness(10) /contrast (10 - 15).

Maybe I'm over using those features and need smaller #'s.

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You posted so many pics that those of us without a stellar internet connection can't stand the wait. The pics I do see look pretty good. Try posting the worst you have with EXIF. What are you using to edit them with?

If you are adjusting exposure to lighten dark images, you will introduce some noise. If you 'shoot to the right" (slightly overexpose in RAW) and then adjust the exposure down, you will not have that problem.

And for what it's worth, I don't see it it any of these. Maybe just post a before and after of the same shot.

I use Photoshop CS 2.

I'll remember the shoot to the right. Thanks.

I posted them on another forum and someone said "why so grainy" and I couldn't really tell with my monitor or my parents that they were grainy if any at all.

Nobody's mentioned your ISO. What are you using? The higher the ISO, the more noise in the photo. Often it's not visible in the original file, but even the smallest amount of editing can bring it out.
Btw, I recommend avoiding the use of Brightness/Contrast. It's the most destructive tool in Photoshop. Get used to Levels, where you can use the histogram to avoid recklessly clipping detail (ie blowing out highlights/filling in shadows).

your shot is 72dpi so its grainy. try set at 300dpi.

howzitboy wrote in post #3434967
your shot is 72dpi so its grainy. try set at 300dpi.

That's complete rubbish.

howzitboy wrote in post #3434967
your shot is 72dpi so its grainy. try set at 300dpi.

he could set his DPI at 1 or 1000 and it's not going to look any different on the computer screen.

ahh sorry, i just took a guess lol .guess i guessed wrong. to me they dont look grainy at all so i was clutching at straws

I don't see nay grain issues, but then again when you resize an image for web use you typically throw out any grain noise that is an issue.

When you say 1 person said something, do you mean 1, or has it been said more times than that.

howzitboy wrote in post #3434967
your shot is 72dpi so its grainy. try set at 300dpi.

Eh

OP - I don't see them as particularly grainy (at this size) but IMO, I do see an over-use of the shadow/highlight tool to rescue the shadow detail from these shots, this in itself will introduce 'noise'

Rather than using brightness and contrast try using levels.

carpenter wrote in post #3435541
he could set his DPI at 1 or 1000 and it's not going to look any different on the computer screen.

yeah, i cant tell either.

its PPI by the way

howzitboy wrote in post #3437463
yeah, i cant tell either.

one dpi

1,000 dpi
j/k

Actually they're both 85 ppi on my screen.

The first picture is 13x9 pixels, about 4x2.5mm.
The second one is 700x469 pixels, about 210x140mm.

I can't imagine why you think they have different levels of ppi, but you're not helping the OP.

I don't see any problems with the OP's pictures.