Tag Archives: circle

I’ll Be Watching You

I haven’t done anything creative in quite awhile. Life just kept getting in the way. I don’t know about you but not making things drags my soul down.  Everything becomes harder.  I needed something to raise my spirits.

I needed a simple artistic project to get back and feel like myself again, something that wouldn’t spiral into a huge task that would never get finished.

I’ve been reading these EC comic book collections recently.  They have fantastic art and stories from the early to mid 50s.

On the back of one of them is this image:

A simple portrait.  One character.  Exactly the kind of thing I should try to do.  I imagined an image like this printed three feet square on the wall.

A realistic computer graphic version of this seventy year old drawing would be interesting.  The circular graphic element would call back to the drawing’s comic book roots and it could also reference the modern avatars of social media.  Mixing a realistic character with flat graphic elements would be interesting too.

I could create the graphic elements in photoshop of course, but I wondered if it were possible to build the whole thing in 3D… all “in camera” so to speak.

I fired up my computer…

After setting the character in DAZ Studio and lining up the camera, I created a cylinder one meter in diameter for the background yellow circle.  I parented it to the camera and moved it down the lens axis until it was the proper size behind the character.  The exact procedure is this:

  1. In the Scene Tab menu select Parenting and UNCHECK Parent Items in Place.  Most times you want this checked so that when you parent something it stays where it is, but this time you don’t.
  2. In the Scene Tab drag the object to the camera to parent it.
  3. The object will move to the camera position.
  4. You can then drag the object exactly along the axis of the lens and position it as far away as you want.  The object will always stay in view and centered even if you move the camera.
  5. Lastly, make sure you re-check Parent Items in Place so the next time you parent something it doesn’t move.

I then created a torus with a ten centimeter diameter for the black line and parented it to the camera in front of the character.  I lined up the black line so it just covered the edge of the yellow circle.  It worked perfectly as this test render shows.

If you’re trying this at home, make sure you have Depth of Field switched OFF in the camera, otherwise it will destroy the illusion.  Everything needs to be in sharp focus for this to work.

I originally imagined the image to be just a circle with the outside corners transparent.  I needed to eliminate the characters shoulders though.  At first I thought I could just eliminate some of the geometry but I couldn’t do that with a precision that could be hidden behind the thin black line. I decided to create another graphic element covering the outer edge, in front of the character.

The blue surface was created with a three sided torus that was scaled flat along one axis.  The center is eleven centimeters, slightly bigger than the black circle.  I wanted to make sure the black line could sit in front of and separate from the blue torus.

I lit the character with three lights: a hard key light from the side to suggest a noir style, a backlight to bring out the hair and jacket, and just a bit of fill on the face.  I decided to make the backlight blue because I thought a blue highlight would suggest how black hair is colored in comic books.

Finally I set lights for the graphic elements.  I wanted the blue foreground light to be even across the object but I had to light it from the side to keep it off the character.  I didn’t think it would work but after a bit of tweaking I was able to get the light relatively even.

For the yellow background I wanted the opposite.  I set the light low and shot it up across the surface, creating a gradient effect.

The hard key light on the face looked a little flat on one side so I created a simple plane to make a “flag.” I parented it to the key light, then brought it in just a bit to break things up.  I reduced the surface Cutout Opacity to make it semi-transparent and only block some of the light.  I guess that makes it more of a “net” in filmmaking terms.

At one point I had this strange problem that I never had before where the eyeballs were hanging out of the sockets on either side.  I thought it might be a problem with the expression settings I was using but that turned out to not be the case.  I never figured out what it was.  I solved the problem by translating both eyeballs in slightly.

Color correction in Capture One was relatively simple.  I brightened up the character a bit and re-balanced the lightness of the graphic foreground and background separately.  I also combed over all the minor details and fixed any small imperfections.  If I print this big you will be able to see everything.

Overall I’m quite happy with the way this image turned out.  It feels good to be creating again.

Created in DAZ Studio 4.24
Rendered with Iray
Color Correction in Capture One

 

White Ring

After creating my Red Ring CGI piece and having trouble with it being quite dim, I went back and changed a few things in the original project and re-rendered with a white ring of light.  I wanted this version to be different, not in silhouette, so I added an extra light to shine on the robot as well.

The robot is actually the same color as in the Red Ring image, except that I made the surface less glossy.  I also added a robot head with one circular eye.

Created in DAZ Studio 4.21
Rendered with Iray
Color Correction in Capture One

Red Ring

The vision in my head:

An intensely bright thin red ring light in the distance, a woman robot in silhouette, on an abstract shiny metal plate surface, hyper realistic, cinematic, dense atmosphere

To manifest that vision I created a floor plane with a metal shader and another black plane as the backdrop.  A simple torus primitive served as the red ring light.

I wanted the red ring to frame the figure and at first I tried placing it way in the distance, but I found that it dipped below the floor plane and I wanted to see the full ring.  Moving it closer and scaling it down created the same composition with the added bonus of shining a strong rim light onto the robot figure.

The shapes in the background are part of an abstract model that actually goes all the way around the landscape.  I found a part I liked and buried it in the fog to create a little texture in the background.

I spent quite some time adjusting the surfaces on the floor and the robot.  The entire scene is lit by the red ring.  The only other light is in the eyes.  The color and reflectivity of the surfaces really determined the quality of the image.  I wanted the floor to be shiny and reflective but not blown out.  I also wanted the robot to be in shadow.  A chrome or white surface didn’t work so the robot is actually shiny metallic dark grey and black.

Ultimately the original render was quite dark.  I felt the quality of the light was more important than the brightness.  I could always brighten it up later.

It took about seven and a half hours to render because of the fog and the dim light.  (Bright light renders a lot faster in Iray.)  I also rendered it at 14400 x 7200 so I could print it four feet wide and hang it on the wall if I really wanted to.  I’m crazy that way…

This screenshot shows the brightness of the original render just as it finished baking for seven hours.

When color correcting I brought the brightness up quite a bit while trying to maintain the quality of the light. The problem was all the detail was in the red channel since all the light was pure red.  This left even a brightened image still dark.  This is all the brightness I could get out of the original color correction:

Later I went back and tried a few other things to brighten it up more.  I figured if I could get the ring to blow out (overexpose) and become white It would still look OK and be much brighter.  My color correction software, Capture One, is quite good and of course that means it doesn’t clip the high end even if you push it quite far.  I tried all sorts of crazy things, experimenting, just to see what the software could do.

When I was screwing around with a black and white version I hit upon something…

I found that if I messed with the top end of the LUMA channel on the CURVES tool and the top end of the RGB channel on the LEVELS tool they interacted and did exactly what I wanted, blowing out the top of the red channel.  (The LUMA channel in the Curves tool somehow only adjusts contrast without changing saturation.  It’s not the same as adjusting the full RGB.)

You can see the way I set both tools at the bottom of this screenshot:

This brightened up the entire image quite a bit and It’s how I created the final color correction.

Created in DAZ Studio 4.21
Rendered with Iray
Color Correction in Capture One

Can AI draw a Red Ring of Light?

Recently I was experimenting with the Midjourney AI art engine.  I saw an image in my mind of a robot backlit by a red ring-light.  I typed it up as a prompt:

An intensely bright thin red ring light in the distance, a woman robot in silhouette, on an abstract shiny metal plate surface, hyper realistic, cinematic, dense atmosphere, intense, dramatic, hyper detailed, –ar 2:1 –v 5

I expected to get something like the image above.  That’s not what happened.  For the next hour I tried to get Midjourney to build something even close to what I envisioned. I typed and re-typed the prompt, changing the way I described the image.  Most of the time I couldn’t even get a red light ring.Midjourney kept trying to make a “sun” with a red sky.  There are round portal structures, some even reflecting red light, but almost none of them light up.  The light’s coming from somewhere else.

What I asked for was simple.  Why is this so hard?

I’m guessing it has to do with the data set the AI was trained on.  I bet there aren’t that many images of red light rings in there, maybe none at all.

One of the things that frustrates me about AI art is the way most things turn out looking generic, like everything you’ve seen a million times before.  This makes sense of course, because that’s how it works.  It studies what everything looks like and then create from that.  It’s almost a creation by consensus.  An unusual Red Ring isn’t part of the equation.  I could probably eventually get to what I wanted if I kept trying and perhaps made the prompts much longer describing every detail.  Maybe.

Or I could do what I did and create what I saw in my mind with CGI.

Has this put me off AI art?  No.  Every tool is good at what it’s good at, and it’s not at what it’s not.  I was looking for the edge of what this new tool could do (because that’s where the art is) and I found it.  There’s nothing really interesting right here but there’s a lot more to discover…