Archive for April 2013
Carcolors 25: Carcolor self-portrait
2013/04/28
by Unknown
Categories:
1 peek,
carcolors
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Tree silhouette 13: Spruce sphere
2013/04/26
by Unknown
Categories:
1 peek,
Tree silhouettes
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The "saving money by spending it" fairy tale
2013/04/21
by Unknown
Categories:
Fairy tales,
Philosophical,
Photosophical
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Carcolors 24: Green & blue blinds and a hole
by Unknown
Categories:
1 peek,
carcolors
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Macro tilt-shift & EF-S mount incompatibility
Today, I would like to add a macro tilt-shift example and inform you about an incompatibility issue, which I have just become aware of. The photograph above is not particularly remarkable in any way and it is not about the flower either (I may introduce the plant in a Flora post in the very distant future - if I should ever manage to encounter these plants in full bloom). It was the main goal of this photograph to illustrate the tilting of the plane of focus. Therefore, I have tilted the lens (an old Canon 100 mm Macro lens) to the right. Notice how the focal plane runs diagonally from the lower right corner to the upper left part of the photograph.
The second goal of this blog post is to inform about an incompatibility with the Mirex tilt-shift adapter, which I have just realized: It does not seem possible to mount Canon EF-S lenses on the adapter. In theory, the image circle of the EF-S lenses, made to cover an APS-C sized sensor, should be sufficiently large to allow tilting and shifting the lens on a micro four thirds body. However, as far as I understand, the problem is the rear lens element of EF-S lenses, which protrudes further into the body (the adapter in this case) and thus prevents fitting the lens on the Mirex adapter. I have only tried mounting the 18-55 mm EF-S kit lens (an early, unused version that I have lying around in a dusty box), but I would assume that other EF-S lenses would not be compatible with the Mirex adapter neither. I am not bothered by this incompatibility, since I do not have a lens that I would want to use with this adapter and the image quality obtainable by tilt-shifting a full-frame lens will certainly be better. However, the thought of a 10-20 mm tilt-shift zoom lens (just as one of many possibilities) was enticing for a moment.
2013/04/19
by Unknown
Categories:
Tilt-shift
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In memoriam of my Konica FT-1
Despite my fond memories, I have not been using any of my film photo cameras since many years and felt burdened by their unused existence in a box in a cupboard. Therefore, I am really happy that I found somebody who will actually be using my camera companion of the past. In line with my credo for moderation and my motto that less is often more, reducing equipment is liberating and beneficial. I am on the right path: During the last years I have been selling far more cameras (two) and lenses (four) than I have bought (1 lens). I still own more lenses than I can use and also have two functional cameras that are not used anymore sitting in a cupboard waiting to find a more appreciative user (or to be put down in a recycling station).
2013/04/12
by Unknown
Categories:
Florian's photos
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Flora: Narcissus pseudonarcissus - Wild Daffodil - Jonquille - Osterglocke
Besides their use as garden plants and cut flowers, daffodils are noteworthy for their toxin production. You can even observe this at home with a daffodil bouquet from your flower shop: The water in the vase should stay clear and clean much longer than with other types of plants because secreted toxins prevent bacteria and fungi from growing. However, these poisonous substances may also harm other flowers within a bouquet and therefore you have to be careful which plants you combine with daffodils or pretreat your daffodils (let them in a bucket of water before adding them to other plants). The toxins of the daffodil belong to the class of the alkaloids and are mainly synthesized in the bulb and also in the leaves. These substances cause skin irritations and itching and can even be deadly when ingested in certain quantities. Wild daffodils contain for example galantamine and lycorine. Galantamine, which is found in daffodils and related plant species, is particularly interesting, because it is registered as a treatment of certain forms of dementia and Alzheimer. However, galantamine can be synthesized chemically and does not have to be extracted from plants.
2013/04/07
by Unknown
Categories:
Flora
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Carcolors 23: Red marks all over
2013/04/06
by Unknown
Categories:
1 peek,
carcolors
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Tilt-shift: Shift panorama 1
Here is another short update on my tilt-shift experience. I have not been taking many photographs recently and do not feel very creative, but these photographs are solely shown for educational and illustrative purposes anyway. I wanted to try the shift function of my recently purchased and described Mirex tilt-shift adapter. The photograph above shows a panorama that was captured from the Hochwachtturm on Albis, which is a small mountain and popular viewpoint (although less so in winter) very close to Zurich.
The photograph was created by combining three captures (no shift and full shift to either side) and the lens was a Canon zoom lens (70-200 mm L, at f4). The images were recorded in 16:9 format (4352 x 2448 pixels). As the black borders on either side indicate (I left them on purpose), this lens's image circle does not cover the entire area created by a full shift (15 mm) of the Mirex adapter. The full panorama is almost 11'200 pixels wide and a crop without vignetting is still more than 8700 pixels wide - twice as wide as the original image format!
I guess that each lens has a slightly different image circle and therefore the final size of such shift panoramas will depend on the particular lens that is used. However, this is one of the applications of the tilt-shift function that I have been interested in and I will certainly continue to experiment with it.
2013/04/01
by Unknown
Categories:
Tilt-shift,
Toolbox
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