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Can with dropsI made a particle system on this can to make it look "sweaty" but the water drops are far too dark for me. Is there any way to make it look clearer/lighter/more reflective?

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I assume this is under Cycles.

Double-check that the Base Color is full white. By default, a "fresh" Principled Shader uses 80% linear white (i.e., all RGB channels=0.8, not 1.0). In addition, you'll want to change the IOR to 1.33, so the drops are water, not glass.

Beyond that, you can try replacing the Principled BSDF with a Refraction BSDF (also with 100% white color and IOR=1.33). This looks brighter in some lighting conditions and darker in others -- overall, I think it looks brighter for drops viewed head-on.

If that's still not bright enough, you may want to try turning the alpha down a bit on the Principled BSDF or consider a Mix Shader to mix a Refraction (or Principled) BSDF and a Transparent BSDF, to let a little extra light through.

Here's a denoised render of four droplets, from left to right -- Principled BSDF with default 80% white and IOR=1.5, Principled BSDF with 100% white and IOR=1.33, Refraction BSDF with IOR=1.33, and mix 70%/30% (i.e., factor=0.3) of Refraction BSDF with Transpartent BSDF.

enter image description here

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  • $\begingroup$ Thanks, this worked. $\endgroup$ – Digit Nov 25 '19 at 3:41

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