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  • Calculator – cost of photographic formulas
    darkroom

    Calculator – cost of photographic formulas

    Bylungov 16 October, 20178 December, 2025

    Calculator for easy assessment of photographic formula’s cost. You enter quantities, dilution, packaging and price and get right away how much one liter of that working solution costs. Very convenient to compare different formulas, purchased ready to use or homemade, and decide what suits you best in financial terms.

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  • Mix your formulas – black and white photography with just 8 reagents
    darkroom

    Mix your formulas – black and white photography with just 8 reagents

    Bylungov 16 October, 20178 December, 2025

    Find a compact set of chemical reagents, 8 in total, that will allow you to develop film and print B&W photographies. With instructions about mixing, using and cost considerations. A nice starting point if you are interested in setting up a photography darkroom and make your own chemicals.

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  • Pinhole Camera
    Uncategorized

    Pinhole Camera

    Bylungov 13 October, 20174 October, 2025

    Homemade pinhole cameras using packaging left overs, woodwork, 3D printing and camera parts. Features also pictures taken with them.

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  • Enlarger head using LEDs
    Uncategorized

    Enlarger head using LEDs

    Bylungov 14 September, 20176 October, 2025

    Article presents project to build a black and white photo enlarger head, with timer, using LEDs and Arduino platform. The result is high power and excellent contrast control for black and white work.

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  • Using RAW format in photography
    Uncategorized

    Using RAW format in photography

    Bylungov 8 August, 20174 October, 2025

    Article analyzes a practical case in which the use of RAW file, thanks to its greater depth of color, allows the exploration of areas of a photograph that in format .jpg would be lost.

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  • Color Depth in digital image files
    Uncategorized

    Color Depth in digital image files

    Bylungov 6 August, 20176 October, 2025

    Article explains why and how color-depth concept is necessary to express the array of different colors a digital system can handle. It clarifies why it must be expressed in bits, what that means in terms of color differentiation, when true-color is reached and why sometimes more than true color becomes highly desirable.

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  • Landscape Lens  | Hermagis
    Uncategorized

    Landscape Lens | Hermagis

    Bylungov 2 August, 20175 December, 2025

    Made in the nineteenth century this lens is a simple achromatic doublet and follows the same constructive principle of the lenses used by Daguerre in his first photographs.

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  • Traité elementaire de l’objectif photographique | Étienne Wallon
    photographic optics

    Traité elementaire de l’objectif photographique | Étienne Wallon

    Bylungov 2 August, 201724 October, 2025

    A very complete treatise on photographic lenses. It starts with refraction and follows with formulas for spherical lenses, types of aberration, ways of correcting them and in the most practical part it cites the main families of lenses, their manufacturers, and goes down to the surface radii for some examples chosen. Great reference. Digitized by…

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  • Photographic Lenses of the 1800’s in France | Corrado d’Agostini
    photographic optics

    Photographic Lenses of the 1800’s in France | Corrado d’Agostini

    Bylungov 23 July, 201724 October, 2025

    Excellent book plenty of information about the optical industry in France in the 19th century. It has large and clear photos very helpful in the identification old lenses. Lots of information about manufacturers and leading industry’s opticians. Corrado D’Agostini is professor of clinical psychology at the University of Florence and also collects and studies photographic…

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  • Eyes wide open – 100 years of Leica Photography | Photo España 2017
    Uncategorized

    Eyes wide open – 100 years of Leica Photography | Photo España 2017

    Bylungov 21 July, 20174 October, 2025

    Exhibition Review: discusses relationships between the technical features of the legendary Leica camera with aesthetics and new subjects in history of photography.

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  • Daguerréotype | many authors
    protographic processes

    Daguerréotype | many authors

    Bylungov 4 July, 20178 December, 2025

    Daguerréotype | many authors Contemporary print of the main texts that marked the announcement of the Daguerreotype in 1839. It contains speeches delivered in the Chamber of Deputies by the Minister of Interior by François Arago by Gay Lussac, the procedure as described by Daguerre, also contains the description of Heliography by Nicéphore Niépce, some…

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  • Musée Nicéphore Niépce
    studiolo-en | Uncategorized

    Musée Nicéphore Niépce

    Bylungov 3 July, 20175 December, 2025

    Review from a visit made in 2017 to the permanent collection with focus on the “Discovery room”, that features the contribution of Niépce to the invention of photography.

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