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Marius Oberholster Hey! I'm having an incredible learning experience, not only learning how Blender works (yes, still learning), but also about Open-Source and the incredible software available. Stick around!

Underwater Compositing - Softness

February 9, 2015
Hey all!!

Today we cover the last in the series on underwater compositing! There may still come future posts on certain features that still apply, but as far as compositing goes for a basic underwater scene, we're ending today :D.

As you've seen, we're covering softness today. While this is not always required, there is a certain presence to water that to most often presents itself as a softness. You'll find it even out of water in very humid conditions, but really makes most underwater scenes pop!

It is also a very common photographic element when it comes to people who do weddings or engagement shoots and so on.

It is a very basic effect that can be described like this:
Your original image/video blurred over itself

It is as simple as that. Some people use it to suggest heat in the desert, other humidity in a forest, others still humidity at sea and of course, photographers adding a little something extra and last but not least, people who use it to round off an underwater scene, haha. Ironically, I add this very simple effect to almost every render I do in a very subtle amount.



As you can see, it is very subtle - so subtle that the glare over powers is that you barely even notice it. Granted, you can make it more or less intense if you want to, depending on the kind of water you want to create.

Here is an extreme example on the same image:


Huge difference, no, haha.

This is very very simple to set up:
1) Render output into a Color > Mix node and
2) Render output into a Filter > Blur node (set to relative fast Gaussian, about 0.5 should be enough) into the same Color > Mix node as the first one
3) Blend Type has to be Mix and the Fac value will determine how strong the effect will be

It's that simple! So simple that I made this into a node group that I have on blender as part of my start-up file - saves a lot of time to make node groups for often used set-ups or special effects you know you want to recreate later. That's for another time though, hahaha.

Hope you were blessed by this!! Now get out there and make those underwater scenes stand out!! :D

Thank YOU!!!!!!!

PS, check out for the video on the facebook page to see the above image in motion! :D
 

Underwater compositing - Sun rays and caustics

February 6, 2015
Hey all!

Now, recently, we've been talking about underwater compositing and today's example will show you just how much compositing it takes, at least in Blender, to really get that look.

Here is today's final:


As you can see, it looks nice and fuzzy, has a shallow water type feel to it, yet still quite deep as you can see the water surface and the beams stop before hitting the bottom.

This is what it looked like before any compositing was done:


Let's get on point for today's post - caustics and...
Continue reading...
 

Underwater compositing - Mist

January 28, 2015
Hey all!

Been a while since the last post, but this one is something I've learned a little bit on, so I hope this helps you tons! :D

Something that can easily be missed when it comes to underwater compositing is mist or a cloudiness. This comes from the way light bounces in the water, as well as other particles in the waters. Just think of a misty day. You can only see so far. Depending on the kind of water you are in, you will have varying decrees of clarity.

BUT! This is not a white mist. Ther...
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Underwater compositing - Brightest boost

December 11, 2014
Hey all!

Now we're on to part two of the series on underwater compositing. Obviously, I'm no expert at this, but what I do know I do like to share, so I hope you find this helpful.

Personally, I used Blender Render a lot. It is the old render engine in Blender and it does not support caustic light. I remember when I started out with Blender, I really really tried to figure out how to make it make that light, but nothing, haha.

In compositing, you have, in situations like Blender, values that go ...
Continue reading...
 
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