Shower glazing acting like a magnifying glass

[adamsargeant]

Hi all.

 

After some advice on why the 2 shower screens on the right hand side are almost acting like magnifying glasses.

 

They are simple planes created in 3DS with a simple Vray glass texture applied.

 

Ignore lighting for now, needs amending. Just need advice on why the glass results are non realistic.

 

image upload no resize

 

Thank you,

[notamondayfan]

Could be IOR in the material, glass thickness, or even smoothing groups / geometry problems.

[adamsargeant]

I can't check IOR at the minute, but the glass is just a plane so no actual thickness..

 

Should the glass actually be a 10/20mm deep box 'object' with the glass texture applied to the entire object?

[jasperjanssens]

If you just use a plane, the rays will be bent once upon entering the glass layer.

In a normal glass pane (with thickness) the rays are bent upon entering and then 'unbent' (bent in the other direction) when leaving the glass.

You can see what i mean in thiis google image: http://www.infoplease.com/images/ESCI114REFRAC001.gif

 

This means that in the first case the rays are traveling in the bent direction far longer & never 'unbent' which means you get a distorted image.

 

I always use glass with thickness for better realism. You can use glass as a plane, but then you need to set the ior to 1, which means the rays don't get bent.

[adamsargeant]

If you just use a plane, the rays will be bent once upon entering the glass layer.

In a normal glass pane (with thickness) the rays are bent upon entering and then 'unbent' (bent in the other direction) when leaving the glass.

You can see what i mean in thiis google image: http://www.infoplease.com/images/ESCI114REFRAC001.gif

 

This means that in the first case the rays are traveling in the bent direction far longer & never 'unbent' which means you get a distorted image.

 

I always use glass with thickness for better realism. You can use glass as a plane, but then you need to set the ior to 1, which means the rays don't get bent.

 

Thank you, Jasper. Will give this a go when i get home. As well as getting rid of those hideous Green shampoo products

[adamsargeant]

It was the IOR. I replaced the single plane with a 10mm object and altered the Fresnal to 1.5. Result is more realistic and i have posted final image to the gallery.

 

Thanks for all help.