Archive for the 'studies' Category

01
Mar
10

Fractal fun: coloring changes

A fractal spiral colored by a palette designed along Persian-carpet colorsWhile working on fractals in Fractint it was easy to fall into the habit of making color gradients for my palettes that mimicked metallic surfaces. Without the added flexibility of the tools now available,  most of my fractal play was in the nature of ‘taking portraits’ or ‘macro-photographs’ of structure that was either striking or, as so often happens, reminded me of something. Eventually all that shiny surface gets kind of same-y and it’s time to consider some changes. In my last post, I put up a few fractals that were more or less monochromatic. For the images of this post,  the palette was designed to look as if the fractals  were done in colored pencil. By altering the gradient so that its peak color was white (instead of peaking at an intense shade of the color to create the illusion of highlights on a metal  surface), and by limiting the colors to a main hue shading to white and adding a solid black for “drawing within the line”,  the palette’s effect is pretty close to colored pencil shading.

Thus,  bright, shiny images …

.get a different look. Julia fractal colored as if with colored pencils

As you can see in the next images, the limited number of colors in the palette  for Fractint doesn’t  work very well when the pixel values of the iterations (each time the formula is altered then solved for all solutions within the range and by the parameters being explored) don’t change enough to avoid ending up with bands of color rather than a smooth gradient.  Sometimes, the banding that results can be used to effect in an image, but usually one wishes the gradient were smooth instead.

Coloring the same fractal with different color palettes is par for the course, as one looks for the best way to enhance the structure that interested the eye.  With bilaterally and radially symmetrical fractals, this allows us to play with Paint Shop Pro, or some such, to assemble an image with different versions of the same fractal, for fun.  With Ultrafractal,   this is possible using the various tools within the program,  in concert with special formulae  that writers have given to the  public collection for all of us to use.

Using Fractint and Paint Shop Pro;  the last is a sort of vertical diptych:

(click on images in this post to view larger versions}

Gold, green and grey horizontal julia with golden spherescolored pencil coloring of horizontal julia-based imagecomposited image of metallic and colored pencil julia based fractal image

Messing about with the coloring can get you out of a rut. If everything one’s filing away looks like metal,  maybe it’s time to try to make it look like plastic or a painted surface.  Or even an organic object of some Nature not quite our own.radiating lavendar metallic

Radiating metallic  efflorescence.

Change things and get a high contrast image.high contrast white version of radiating efflorescences.

red, lavendar, white and brown radiating raw liver-y  look.

This one grew on me, eventually. though, I still call it the ‘organized liver’ when no one is within earshot.

Study the way light bounces off of things.  Does the brightest highlight still exhibit a shade of the color of the surface or is it a straight reflection of the temperature of the light source?  Does the highlight flare out over the surface or does it stay tight to the shape of the ilight source? Watching for characteristics of surfaces is a great aid to increased flexibility in choosing how to best exhibit whatever structure the math reveals while you explore the literally infinite world of fractals.

Cheers!

06
Jan
09

A Change in the Whether

Stuck bubbles

Happy New Year! In recognition of the standard images of New Year’s celebrations, here are some bubbles. I’ve always liked watching bubbles, sometimes to the embarrassment of those friends still fearless enough to take lunch with someone bent on close visual examination of the utterly ordinary.

These bubbles, happily, are much easier to work with than the violent effervescence of champagne or a carbonated beverage; these are in a viscous liquid hand-soap that holds bubbles in a sort of stasis until the pumping of the soap disturbs them. They are a fun subject to shoot at about life-size, play with different lighting effects, sort through the possible viewpoints for an interesting abstract composition or an interesting pattern of specular highlights, or the reflections of the other bubbles. I use a small krypton bulb flashlight to see approximately what will happen when the flash(es) lighting the scene fire(s).

I had started experimenting with these a few days before I started another photographic course. As it turned out, part of the coursework was to take a couple of the pictures during your work for the first week and take the same subject again during the last week to apply what you’d absorbed during the lessons; I think of it as seeing how “whether” affects your new image. Whether you would use a different point of view, whether you would use a different depth of field or optically extract a different center of interest by restricting the zone of clear focus…a whole bunch of the standard ‘whether’ questions that crop up in photographic problem-solving.

At roughly the same time that class got underway, both of our cats started behaving “differently”. As the days progressed it became clear that our nearly 24-year old elder catcarla1 was in sudden, accelerated decline. Although she had been nearly blind with cataracts for some time, she’d not stopped going outside daily with people to enjoy some fresh-grown mild cat mint (sometimes climbing up into the pot to sit on the plant so that the younger cat wouldn’t get silly ideas about her sharing) and a good stretching roll on the sidewalk. This changed into her becoming frail in her walk and focused on finding an inaccessible, small place to hole up, frequently trying to leave the yard, causing whichever of us had chaperoned her walk to hustle before she managed to get into some cranny where we could not find her or from which we could not retrieve her.

We didn’t know what to make of the 12-yr old. For as long as he had lived with us, he’d followed people. Originally, he was mostly a gardening supervisor, scouting out where you should work next, coming over to inform you and then settling in an advantageous spot from which to carefully scrutinize your work, as if to be certain you weren’t pulling anything that Ought Not Be Pulled. Then I got this digital camera and he became Photographer Sidekick, Esq. Whenever I pulled out the tripod or put the camera strap over my neck and stepped into my Muck boots, Tyrone would appear and sit patiently while I collected gear. He’d precede me to the door and out we’d go. For the first few minutes he’d check the yard for interlopers while I set up a shot. I’d sit on a low brick retaining wall to take pictures of the flowers and grasses and work for a bit, take the camera from my face and there would be Tyronetyredwoods sitting either upright or Sphinx-like, crowding my right elbow, happy as a clam. If I set up for bee practice, he’d be sitting slightly in front of the tripod legs watching the bees, looking at the lens and back to the bees. He did not, however, approve of me taking *his* picture and, until he was too ill to thwart me, the only decent shot I got of him was when he came out under the redwoods in the backyard with me, settled into the deep shade of the lower redwood branches and debris at the trunk and I sneaked a shot when he looked up to see what I was doing (seen above).

We got both cats into the vet, knowing how poorly Carla was doing and thinking that maybe Tyrone’s teeth were bothering him again, despite brushing, or that his insulin doses needed fine-tuning. We discovered that Carla’s kidneys were about what one would expect in a 23-year old cat, which we had anticipated, and that Tyrone had a shadow on his x-ray, about the size of a golf ball, which at only 12 years of age, we were not prepared for at all. Soon, biopsy and CT scan would show this to be an extremely intrusive and fast-growing lung cancer, which quickly metastasized to several other locations.

Numbly, we gave both of our beloved friends palliative care for as long as they seemed to take comfort. Carla got the right of way, anywhere, and whatever she felt she could eat. Supervised trips outside soon fell away and she dozed where she could hear someone working at a desk. Tyrone, with all that black fur and the sun bakingly hot in the afternoons, spent hours supervised outside, where he started to take on the behavior Carla had been exhibiting, finding a small shaded hidey-hole at the base of dense plants or in long millet stems in under a rose bush to curl up in. Turn your back and he’d have vanished from sight. I would take a lunchbox, a book, a director’s chair, water and my silver reflectent umbrella and sit, keeping both myself and any exposed Tyrone bits from overheating in the direct sun.

In mid-September, Carla left us, sometime in the very early hours of the morning, apparently passing in her sleep. Tyrone seemed as lost by this as we were and started sleeping most of the day away, in under the parlor organ with his head propped on the top note of the bass foot-pedals. Within three weeks it was obvious that palliative care was no longer effective enough and it was time to help him out of pain; we took him “visiting” to the vet’s one final time.

During this melancholy period, the photographic course rolled on. I’d not really considered how hard it would be to take up the tripod or the camera, look up and not see a very large black fuzzball waddling authoritatively in my direction or a petite, superbly-camouflaged elderly tortoiseshell heading for the door. As I went about the final assignments alone, this added a new “whether” to the choices made in re-shooting the subject from the first week for the last assignment of the course: whether to try to inject my mood into the image or shoot it straight. Looking around in the soap bottle for a new composition, I found a domed bubble that was reflecting the bubbles above it and decided to go with that. The teal-blue and silvery bubbles of the original seemed too cheerful to me, mindful of the gaping hole in this room, where my photography companion would normally be, and the empty office chair in the other room where our elder cat used to take comfort in hearing someone working nearby. Opening a desk drawer, I dug out a filter holder, mounting it on the end of the lens. I went to the back room equipment drawers, selected an old Kodak 80A Wratten Gel filter and placed it in the holder. I adjusted my exposure to account for the loss of light due to the deep blue filter and took a few exposures, adjusting depth of field and lighting along the way.

Nocturne for Carla and Tyrone

The result captured much of what I wanted, but I would like to have shot this at about 2.5X magnification to pick up the bubble reflections in the domed bubble; they only really show up at the original image size. I also imagine two small moons would look nice in there but that’s a job for image manipulation, and I don’t think I could do it the way I imagine it.

I think of most pattern shots and abstract shots as a form of music, each with its tempo, tone, and rhythm…this is a Nocturne for Carla and Tyrone.

tyrone1

carla2

May your New Year be blessed,

pete




Phrases that resonate in my head

Morning comes and morning goes with no regret
And evening brings the memories I can't forget
Empty rooms that echo as I climb the stairs
And empty clothes that drape and fall on empty chairs
.

From ‘Empty Chairs’

By Don McLean

Places to go, things to see…

Theme: Redoable Lite by Dean J Robinson
 All content, text and images, except where credited to other artists, ©2008-2010 Peter M. Spencer; all rights reserved. Use by permission.


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