Opacity Settings

[ldichiara]

Hello all -
Have a question Im hoping someone can help with; I have a solidworks model which I am bringing into Keyshot 3 (can also do 2 if necessary);
For the sake of simplicity, let's assume my model is a spray paint can - with a colored cap on it. What I am trying to do is evaluate that colored cap with varying degrees of opacity set to it - likely in increments of 10% - with the intent of revealing what is underneath the cap.
The point of the exercise is to evaluate before talking to a vendor for production a desired level of translucency in the cap. Is there an easy way to do this in Keyshot? I queried this before and was told to use opacity maps - so I've gone and done that - making 250x250pixels of solid gray color in increments of 10% and then saving them out as both JPG and TIF files; this has yielded results but it doesn't appear accurate to me - so I am either setting this up incorrectly or it isn't working.
Could anyone provide me with a potential solution to achieve what I am after?

Thank you -

Lenny DiChiara

[ldichiara]

to build on my initial question - if I am using opacity maps - are there preferred setups for creating those maps?
I've built mine in photoshop, 250x250 pixels in size, RGB and saved out as JPG and TIFF Formats....

[jhiker]

Can't you get the desired results by using a clear plastic and altering the transmission sliders?
Or do you want to say, for example, 'I want this cap in grey acrylic, 50% opaque'..