(Metal textures) need some critacisms
This one was created using the clouds in photoshop along with sponge and some tweaking of the contrasts option and a few grunge brushs, a few added scratchs too. I followed this tutourial for the first texture http://www.biorust.com/tutorials/detail/53/en/
this one was created using noise and motion blur.
If they are to big to properly critacise I can shrink them.
Replies
http://boards.polycount.net/showthread.php?t=60767&highlight=brush
Edit: turns out they are not the type of brushs I'm looking for atm.
thanks for your time though.
http://www.cgtextures.com/content.php?action=tutorial&name=blendif
MY main critique would be that the second texture really does look like noise with motion blur. Was it supposed to be brushed metal or something else?
I hope it helps!
Other Metal tutorials:
http://cg.tutsplus.com/tutorials/3d-art/how-to-hand-paint-convincing-metal-textures/ (pretty good techniques for starting a metal base)
http://forums.cgsociety.org/showthread.php?f=46&t=373024 (If you move into painted surfaces)
http://www.cgtextures.com/
Some great ref, even if you're painting your own. You can really get a good sense of how the surface of metal reacts to different things by pouring over ref like this. You don't have to use any of their photos but it helps to dissect them.
Neil Blevins has a pretty extensive CG Education section and covers a lot of shaders and specializes in metal surfaces (check out his Gnoman DVD).
He often breaks the material down and dissects is real world counterpart as he's explaining how and why the shader works like it does. Even when doing straight 2D work this kind of knowledge can be very helpful.
The first one:
- Right now it reads a bit like concrete.
- Also metal scratches tend to be lighter than the metal base. This is probably due to the surface oxidizing over time and the scratch relieving fresher metal underneath. It could also have something to do with the way light bounces off the surface of a scratch or some other crazy physical property of metal, might be worth researching. The more you know about a material the easier it is to recreate.
- The highlights around the scratches suggest the surface was brought up higher, but a scratch would push the metal down. What you have looks like a rip.
- The scratches end abruptly, its pretty normal for them to fade in and out due to the varying pressure of a glancing blow and the arching pattern most forces travel on.
- The scratches are uneven indicating that the metal isn't a consistent density. This inconsistency reads more concrete that has air pockets, aggregate (rocks) and is pretty inconsistent in density even in the binding material.
- The uneven highlights also play into the uneven density.
The second one:
- The edges don't tile all that well thanks to the way the motion blur interacts with the edge. When you use this technique you need to use a bigger texture than what your final texture will be and crop it down, or spend time cloning out and re-working the seams.