Glass Pictures the best choice
At the beginning of the photograph, the collodion wet plates were used: the photographer had to prepare on the ground, that is, correctly distribute the photographic emulsion on the glass at the time of use.
Then the Lamiere brothers invented the dry plate, which was gradually replaced since the early twentieth century by the film, which was always accompanied by a base role, until George Eastman marketed the celluloid film.
The most common formats used on the plates were: 24 × 30 cm, 18 × 24 cm, 13 × 18 cm, 9 × 12 cm, 6 × 9 cm and 4.5 × 6 cm. Or 2×3 ”, 4×3”, 5×7 ”, 16×9”
The use of photographic plates in astronomical research has been significantly reduced since the 1980s, replaced by digital devices with CCD since cameras with CCD have several advantages over glass plates: high efficiency, a linear response to light and greater simplicity in acquisition and processing. However, even the largest CCD formats such as 8192×8192 pixels do not have the area of detection and resolution of the photographs on the boards, which has forced modern cameras to use CCD chipsets.
The term optical resolution or angular resolution or spatial resolution refers to the power of an instrument to separate two objects from an image.
In astronomy the question that arises is the angular distance between two stars so that they can be distinguished separately. The stars are so far away that they are always point sources. However, due to the diffraction of the light as the telescope passes through the light coming from a specific object creates an annular image with a characteristic diffraction pattern called the Airy disk. The optical limit due to diffraction can be empirically calculated from the Rayleigh criterion.
Where θ is the angular resolution, λ the wavelength of the light and D the diameter or aperture of the telescope. Factor 1.22 is derived from a calculation of the position of the first dark ring surrounding the central Airy disk.
This factor is used to approximate the ability of the human eye to distinguish two point sources of light whose Airy discs overlap.
On the other hand, the effect of the turbulence of the atmosphere (called seeing) causes that even on clear nights there is a limit around 1 second of arc resolution (this comes to be the separation of the headlights of a car seen at 300km away)
This is one of the reasons why telescopes are sent on artificial satellites, beyond the atmosphere.Color films (both negative and slide) have an additional feature, that is, their white balance.
What we call white light is nothing more than the result of the addition of the different wavelengths that form the visible spectrum. Sunlight does not produce the same white as candlelight. The latter, due to its temperature, has a greater amount of radiation in the red band so the result is a warmer light. Actually, it is our brain that interprets a certain light as white regardless of whether its origin is sky blue, a fluorescent or a tungsten lamp. But in an objective way each of these sources has a different color temperature, which is expressed in kelvins (K).
The photographic emulsion is not able to interpret the colors as our brain does, so it will impress the combination of colors that actually exists as a result of the wavelengths that each body reflects or emits. Therefore, if the source of white light is the blue sky, the photograph will tend to be bluish, while if the source of light is a lamp it will be orange. To avoid this effect, the color films are balanced at a specific color temperature, that is, they are calibrated for a specific target from which we will obtain the entire tonal range.
Glass pictures It is clear that producing films for each of the different possible lighting sources would not be possible or cost-effective, so the photographic industry has simplified it to the two most frequent types of lighting:
Daylight films balanced at 5,600 K which is the average temperature of sunlight at noon.
Tungsten light films, that is, for lighting with photographic lamps, balanced at 3,200 K if it is type A and 3,400 K if it is type B. In general this is the type of film that was used when taking indoor photography No flash and the light source is an incandescent bulb.
For the rest of the photographic situations, the following color correction filters can be used, depending on the film to be used:
Daylight movie with illumi
This high quality transparent glass is a special printing medium since it does not have the usual green color at the edges, which is very common in the market. This means that the sheets on glass almost do not reflect light, so the colors of the print will not be affected, which can happen with the prints on methacrylate.
Your image is printed on the back of the glass holder. Subsequently, the printed layer is sealed and secured.
For the printing of our reproductions and sheets on glass, we use only techniques that do not produce toxic emissions. Thus, our products are ideal for decorating the interior of your home. The Greenguard® certification guarantees that our products can be used safely, so they can also decorate schools or nurseries.
Glass is a material that surrounds us all the time and that has accompanied humanity for a long time thanks to its endless applications that go beyond architecture, since it also covers aspects such as design, decoration and, for Well, art.
Canvas wall art is becoming more popular due to its durability and ability to maintain vibrant colors for decades. Traditionally, images are printed on photographic paper or printed as lithographs that are used as wall art. These are some of the advantages of canvases over other types of mural art:
Lithography is an ancient method to print large photographs. They require framing and placing glass on the image to protect the lithography of harmful elements in the air that include moisture, moisture and dust. The images on canvas are protected with varnish on the top of the image that prevents damage from moisture, UV rays and dust accumulated on the surface. Today, lithographs are now more ideal for printing business cards and invitations than for decorating walls.
Art on canvas is more durable than photos printed on paper. Lithographs need a lot of care and are sensitive to rough handling. The art of the canvas wall is durable and can last for decades and sometimes centuries. Lithographs will fade and discolor over time. Exposing lithographs to sunlight or UV rays can also accelerate deterioration. Although the art of the canvas wall must also be kept away from direct sunlight, they are more resistant to UV damage.
Canvas paintings stretch on gallery-wrapped canvases and can cost around $ 100 to $ 200. They often come ready to hang and do not need frames or glass for protection. Lithographs and ordinary images on paper should be framed and protected with glass. Although lithographs can cost $ 100 or less, the cost of the frame and glass can exceed $ 100.
Aesthetically, large canvas paintings look very impressive on one’s wall. The canvas wrapped in gallery makes them look very suitable for elegant and sophisticated interiors or for informal homes. As the name implies, they can make your home look like a modern art gallery. Framing the illustrations can be complicated and will involve the use of various types of frames and carpets unless you have all your illustrations framed and matted at the same time.
If you are thinking about convenience, many online art galleries or stores can offer countless canvas paintings in any size or shape you want. Photos printed on paper are usually printed on standard-sized photo paper that does not usually exceed 8 ” x 11 ”. Large sets of canvases can be as large as windows.
The Glass pictures art games consist of 2 to more than 6 pieces and is a convenient way to decorate a large empty wall. If I used small framed images, I would have to put together, frame, frame and mount dozens of photos to cover a large wall.