Working in 3D I have found a lot of my images look too perfect and I would like to add some natural random imperfections. I know this is probably funny as most of the plugins I have seen while search remove these. LOL

Any help will be appreciated!

Thank you!
AB

Not funny, lots of people like to "dirty" their images a little...  ;)  There are grunge or textured brushes that can help you accomplish that, stamp them on a new layer over your image and then fool around with the layer modes, put it to overlay, multiply or other, it will give you different results.  Or you can also use photos/images of textures, paste them on a new layer again and once more play with the layer mode and opacity.  You can erase parts of you texture photo as well where you don't want so much "dirt". 

Hope this helps a little and maybe others will have more ideas to share with ya!  :) 

Have a look at the 'scratched metal' thread in the Texturing forum

http://www.renderosity.com/mod/forumpro/showthread.php?thread_id=2746903

theres a link to a stonemason tutorial in there too...

This is going to be a completely EXTREME angle on what you can do - but hopefully you'll get the idea. You can take your basic render and go ape-s--- with it in Photoshop.

Start with a basic render, open it in PS.

Next open up an image or texture tyou want to apply to the object(s) in the image.

Drag (just use the Move Tool - hit the letter V) the image/texture onto the 3D render, hit Ctrl+T for the Transform Tool, size it down to the general proportions, then Right-click and choose Distort.

Click and drag each of the corners roughly to the shape of the face of the object you want it on - I'm making this the big front face of the block.

It doesn't have to be EXACT - I usually make a mask and paint black what I don't want to be seen - namely the portions that go "outside the lines."

Rinse, and Repeat until you've done this to everything you want to apply texture to in the 3D render.

Again, Transform, and Distort.

I did another one with an image of Conrete (from Dosch Designs) on the shadow side of the block, and here I am using the Polygonal Lasso Tool (because all I have are straight lines - for curved, use the Pen Tool the regular Lasso Tool - your choice, or a little of everything to do the job right) to draw blocks around areas I want to mask (or you can hit delete just to get rid of them altogether.

Now, I've changed all the blending modes of each texture layer to Hard Light - this allows the full amount of texture to be projected onto the surface with its full luminosity.

Try different modes like Overlay, or if you want it more subtle, try Soft Light. This is a great way to do Dodging and Burning (without using the Dodge and Burn Tools) and add texture and color, or both, to a fairly basic 3D render.

Doing texturing like this is also easier and have more controls than doing it in the 3D engine unless you have something like BodyPaint, orUVMapper (or "like" tools in say Lightwave, Maya, and 3DS Max to name a few) where you can export the UVs and custom paint them in Photoshop (or Painter, or the program of your choosing).

Hope this helps-
-Lew

BTW - I dunno if you noticed, but as I'm transforming each texture onto/into its spot, I've lowered the opacity of the Layer to 50% so I can "see where I'm going".
-Lew ;-)

Hi just read this post, and boy did it fix my problem!
thanks the grape

Yeah, that was very good mini tutorial.  I don't know know what version of PS this will work with but I have PS 7.0 and CS.  I'd upgrade but the Roland plotter software only works with CS and below.

It'll work with 7 - it's all just a matter of the Transform tools - just Resize and Distort.
-Lew