Yesterday was a chance to buy flowers for my lightbox before a new virus induced „lockdown“ takes place. Flowers on a lightbox exhibit an illusion of transparency when photographed either as HighKey image or HDR bracket sequence.
I prefer to process my bracketed photographs manually, because there is no possibility to learn how automated HDR software really works. On top of my layer stack I put one up to three HDR software results to layer them in if appropriate.
Photographing flowers is a way to cope with the situation being locked in in a house instead of traveling or meeting friends. Our house looks like a flower store, every now and then we find new compositions. At the end, there is a print.
A composition of flowers often suggests something, not with the eye, but with the inner vision. That’s the fun of it. There are so many compositions yet undone.
My friend Harold is using petals for compositions. I often shy away from cutting off the flowers or tearing out the petals. I was happy to do it today with a fading dark red rose.
Christa, my wife, loves tulips. They may resemble a dream on a lightbox, like balloons taking off for flight. To catch the whole composition I’d either had to climb up a ladder with my 120mm macro lens or change the lens to a 80mm focal length (which I did).
Tulips have become an attraction to me. For a long time I found them extremely boring and meaningless. That has changed over many years. Should I have become older because of that ?
We also have many tulips in our garden. A group of red tulips at the edge of then planted tomato bed is particularly beautiful. But is this beauty also photographicable ?
The beauty in a vase is the epitome of transience. In the meantime, changing light conditions trigger a feeling of tension and happiness in me. This bouquet of tulips has been staying with us for a week now.
With my iPhone I took a shot in our living room. Filter apps help me to get a presentable result.
Today I wanted to try out the same light with the tulips, which spoils my eyes every day with the orchids.
As one can see, our tulips in the living room get already weaker. They are old guys now. Fresh water doesn’t really help. There is no light at the end of the tunnel. How sad is that.
Fusion imaging is beauty made of composite X-ray images and HDR images on a light box. The primary question is what energy fits best for flowers. To my experience 40 kV is often suitable. But: the proof of the pudding is in the eating.
Mammography systems start e.g. from 20 kV and reach 39 kV. The sensor is up to 24cm x 30cm. Conventional systems start from 40 kV and reach 125 kV. The sensor is up to 43cm x 43cm what makes them more attractive to floral compositions.
The higher resolution and the lower energies of a mammography will suit better for transparent objects. But the spatial limit of a composition (which is 24cm x 30cm) might put hard restrictions on the artist.
Floral compositions have more creative space with a bigger sensor. But the X-ray tube starts with 40 kV and this might lead to overexposure of tender structures.
Thus I performed today more than ten compositions to study this relation.
After four exposure of three tulips I found this composition with four dense blossoms attractive to go further. The composition might somehow resemble to a sketch of three angels. The image is nice due to very soft edges of their „wings“, technically blown out portions in the image. The inner structure of the nearly closed blossoms is well resolved. The stalks serve as „body“. There is no advantage with higher energies.
The same composition was done immediately after the X-ray as a bracketing series on a lightbox. After returning I processed a manual HDR, the colors not to warm.
The final fusion image is a composite of the preceding two images. Compared to the lightbox photo, the hidden stalks reappear naturally, the inner petals are outlined like a sketch.