spikey123123 wrote:
I was wondering what would be the way to clean studio background in photoshop. I never seem to get it to look natural. I like the way how it looks on this photo http://notenoughhangers.tumblr.com/image/36426597419
although here it looks a bit overdone and unnatural.. id like to get a bit more realistic but uniform and clean background.

Well for a shot like that you need to start with a good clean seamless black or dark grey the pull down the blacks and shadows some and burn the edges.

spikey123123 wrote:
I know i have to shoot it against gray backdrop,  but it never looks like this. It is full of shadows from llamas it is rarely perfectly flat so it has like a milon little denets.

Can you post an example of the problem?

spikey123123 wrote:
Lighting on this photo is more directional so the efect is more pronounced.
http://postimage.org/image/lnkgk6od3/822db31c/

Try surface blur on the background. Mask out the subject. The mask doesn't have to be precise, just accurate enough to protect the sharp edges, hair, etc., from the blurring.

Barely StL wrote:
For the first pass I use a radius of about 7 pixels and do the areas closest to the model with about 40% opacity to hide the brush strokes. You can't get too close to the model (or anything else in the photo). Otherwise, you'll pull in lighter or darker pixels from non-background areas (and blur the edges of the model). Then I make a second pass with a radius of 72 pixels and paint the rest of the background in with 100% opacity.

That is working around the deficiencies of Gaussian blur. You don't need to do all that stuff. Just use surface blur.

Peano wrote:
Try surface blur on the background. Mask out the subject. The mask doesn't have to be precise, just accurate enough to protect the sharp edges, hair, etc., from the blurring.

^^^ This is the easiest way.