Water in my glass is very blurred and don't look very realistic

[Peksio]

Hello. I would like to ask You for Your help. If someone will have some time to help me I will be very grateful.

I have in my scene glass with water inside it. I think my glass looks ok (but if I can make it better please tell me) but water is my main problem I think. I don't understand why is it so blurred, it just looks weird and completely unrealistic. It looks like that even without any dof. In attachments I uploaded screens of my glass and water materials and fragment of render which I am talking about.

Thanks and Cheers !

[maru]

One note: disable caustics for both materials unless you really really need them.

Are you modeling the glass+water like this? https://coronarenderer.freshdesk.com/support/solutions/articles/5000515618

[Peksio]

I am using Corona 1.4. Yes, my water is created like in this tutorial. I will think about caustic too.

[Juraj]

Why do you think it's the water that's blurry and not the environment being reflected ? What is the environment, how is it mapped, and what is its resolution ?

Your water is correct.

[Peksio]

I light it with HDRI map, resolution is pretty low - 5k but still I don't think that this is at fault.

I did some experiments in my house with my glasses and water and ... it really looks kinda similar. I still think that it looks just weird but it seems that I am overreacting.

Thank You for all Your help, if You can give me some more advices about all of this I will really appreciate that.

Cheers !

[romullus]

While 5K HDRI might be enough to be rendered as backplate, it could be another story when there's glass full of water standing in front of camera, because glass&water acts as a lens here. It may refract your HDRI in a way that would require much bigger resolution to not look blurry. There was a similar discussion in a forum a while ago, but it's hard to find it now :]

Update: ah, found it. Talk is about reflections in that topic, but main concept is the same: https://forum.corona-renderer.com/index.php/topic,5279.0.html