Автор: itilien
Дата: 27-06-08 22:05
преведете си и какво казва един много сериозен професионалист, който печата 150х150 см копия и ги придава по над 1300 евро
As you can guess or even know - digital chips are definitely not my cup of tea. This has many reasons. For me crucial are:
1. The global marketing lobby does not intent to grant the production and sale of the full-frame chips for the medium format cameras - especially not for the format of 6x6 cm (55 x 55 mm), although these were developed and tested long time ago.
2. The effective color resolution of the largest and commercially available digital back is 39/4 for blue and red, and 39/2 for green color = approximately 11 megapixels. The results of this nasty interpolation is disastrous moire and false colors along the high contrast lines and affecting objects of the size or width less than 2 image pixels. This issue can be solved by either the availability of a correctly working Foveon type chip (separate-color-sensitive elements are placed below each other) or, let's say, 1.5 or more times better physical resolution of the current digital back than the maximal resolution of the used lens. By the way, for example, we can eliminate a possibility of a small white spot being projected on the green pixel only, rendering such spot as green instead of white.
3. The dust and other crap on the chip or protective filter encasing real chip. This cannot be probably called the other way than "a product of global imbecility". It would not be a complicated design problem to insert this or any other protective filter closely behind the lens in front of the folding mirror. The crap coming inside the body would settle on the "front" filter in longer distance from the chip, from where it could not be displayed in the final image as hardly retouchable large dark "pancakes", disturbing especially on smooth areas. This is a flagrant example of the human idiotism, stupidity and ignorance.
4. Difficulties with battery charging outdoors and unpredictable behavior in the frosty or humid environment.
5. And finally perhaps the worst - the absence of the film grain, causing the flat up to nearly "plastics" appearance of the photographs, that are not powerful "to pull in" you into the action and leave you unemotional.
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