Is there poetry in a landscape ? Does an image give the impression of poetry ? These questions came up when looking down from the Zugspitze at the Alpine folding.
It was a cold day with with warm rays from the sun. No winds, except at the border to Austria. We were lucky to spend a few hours up there at about 2960m.
This folding was soft and wild at the same time. Is it a solidified sea ? A petrified curtain ? Only the light creates the feelings.
You always need some time to find out the best exposure values for a photo. Same idea holds in X-Ray imaging.
Today I did an x-ray series with my biggest Nautilus shell on a conventional radiography sensor, not a film. Starting from the lowest possible value 40kV an increment of 10 kV up to 70 kV can be seen in the images:
Black regions in the image a transparent, white are opaque. The center of the Nautilus has a loss of structure.
With 50 kV the structure in the center of the Nautilus is better depicted wheras the edge gets more transparent:
Same effect for the center and the edge can be seen with 60 kV:
With 70 kV it’s an exaggeration for the edge and best depiction for the center:
Higher kV means more transparency for denser structures but a loss of structure in transparent areas.
At fixed energy, X-Ray imaging behaves like a shadow related to visible light. When photographing, there is not chance to look through an opaque object. With higher energies, x-rays go through opaque objects and can be collected on a sensor.
Composing the images obtained at different energies is an X-Ray HDR image:
The representation of an X-Ray with white on black is a reminiscence of the film era. Radiologists just looked at the negatives ! Inverting black and white shows the positive image, like a print. Here I show the same image as positive, but rotated and flipped horizontally. Look how ethereal it appears now:
Today I put some tests on my cretean purchases from last September to evaluate their potential of being subject to fusion imaging. I bought three Nautilus shells and two sea snails, holding them in the store against the sun to check their transparency. My untidy studio accommodated these precious stones under quite a bunch of something.
The best representation is with a black background, i.e. with inverted L-channel in Lab colors. With a black background a soft shining light appears in the objects.
This snail has a shape a triangle and resembles a bear claw or an Apollo capsule in the late Sixties. The translucency is very little.
The following snail has a classic shape. With the black background it resembles a galaxy in outer space.
My first attempt with the Nautilus shells led me to a copper-like color representation with a single shot image. Lab colors is the key to this color and light distribution. Very attractive is the fact of two shells turning right and one left. Why did I wait so long to make this image ? Why do we miss important opportunities ?
After a rainy New Years eve and a cloudy 1st January there was a chance to escape to an island in the sun: Sylt.
A walk south along the beach at noon had a phantastic front light. We strolled without sorrows. The horizon wasn’t clear at all.
It’s good to have these days without sorrows.
Short after 4 pm the sunset happened much earlier than in southern parts of Germany. The winds became more weak. A composit image of horizontal motion blur and a normal shot after the camera movement rendered a little bit of structure.
Increasingly great reflections occurred the next minutes. Hot waters ?
The darker it becomes the more fatigant is our way home. Less people are now on the beach. All tend to go home.