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Printing your images into paper is the next important thing in digital photography. If you have not used the proper printing equipments for this and the best photograph opportunity will not get justice. To find a way to do justice to the photos that you got electronically, a great printer will really make the designs arrived at life.

The way was paved by the existence of various types of digital camera for different types of models to be developed. Companies realize that printing photos is way not the same as printing basic styles. That is why they are always discovering digital photo prints that would be suited by printing abilities well.

Nowadays, there are certainly a lot of ways to have digital photography published. Techniques and each publishing methods have their very own advantages and disadvantages. It is best to know what these things so that you will know what to own and when having your pictures published what in order to avoid.

Here are a few portrait digital photography printing choices:

1. Photo shop.

Today the old style of getting your picture to an image shop for building is still used. The sole difference is that films aren't anymore used. You just need to carry with you your digital camera and the photography store can print your pictures for you.

An advantage in using image shops is that they're complete with very sophisticated machines you do not have in the home. Additionally, they know plenty of recommendations and techniques to create your images look its most readily useful. Plus, the image store has got the capability to edit your pictures should you feel that it generally does not suit your taste. You merely need to provide the specific recommendations and they'll do the remainder.

The problem with using photo stores may be the waiting time. You still have to wait some time before your images are printed, even though it doesn't take provided that it does with movies. Still another disadvantage is that the printing equipment they're using may possibly not be the sort that you would like your images printed on. So it is simpler to be specific concerning the printing equipment that you would like them to make use of so that this problem is going to be prevented.

2. House printer.

This is fast becoming one of many most widely used types of printing digital images. More and more folks are getting their particular printers installed at home to ensure that they could produce their photos anytime they feel like it.

Before you start making them out In this manner, you can change your own images and make them in your own personal collection. If you want them to turn out the way you expect them to be you only have to ensure that you have the correct printer for the digital photos.

With house units, that you don't need to wait in line for your images to be published. All that is required is for your camera to be plugged in right to your personal computer. From there, it is possible to print the images right away.

The only real drawback in house units is that you have no other choice of printing process to make use of. The printed copies is determined by the kind of publishing that you use.

With digital photography printing, you definitely have an option. Just select the one which you think gives an ideal image to you with little headaches and headaches.

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Glasses, also known as eyeglasses (formal) or spectacles, are frames bearing worn in front of the . They are normally used for or . Safety glasses are a kind of against flying debris or against visible and near visible or . allow better vision in bright daylight, and may from high levels of . Other types of glasses may be used for viewing visual information (such as ) or simply just for aesthetic or fashion purposes.

Historical types of glasses include the , , , and scissor or .

Modern glasses are typically supported by pads on the bridge of the and by temple arms (sides) placed over the . lenses are the most common plastic lenses due to their low weight, high scratch resistance, low , and low transparency to ultraviolet and infrared radiation.[] and Trivex lenses are the lightest and most shatter-resistant, making them the best for impact protection.

An unpopular aspect of glasses is their inconvenience. Though modern frames can be both lightweight and flexible, and new lens materials and are resistant to breakage or scratching, glasses can still cause problems during rigorous sports. Visibility can be significantly reduced by becoming greasy, trapping vapour when eating hot food, swimming, walking in rain or rapid temperature changes (such as walking into a warm building from cold temperatures outside). Scraping, fracturing, or breakage of the lenses require time-consuming and costly professional repair.

[] History[] Precursors

The earliest historical reference to dates back to in the 5th century BC, which depict "simple glass meniscal ". The earliest written record of magnification dates back to the 1st century AD, when , a tutor of Emperor of , wrote: "Letters, however small and indistinct, are seen enlarged and more clearly through a globe or glass filled with water". Nero (reigned 54–68 AD) is also said to have watched the using an as a corrective lens.

The use of a to form a magnified image is discussed in 's (1021). Its from Arabic in the 12th century was instrumental to the invention of eyeglasses in 13th century .[]

's treatise De iride ("On the Rainbow"), written between 1220 and 1235, mentions using optics to "read the smallest letters at incredible distances". A few years later, is also known to have written on the magnifying properties of lenses in 1262.

, in the form of flat panes of , were used in in the 12th century. Similarly, the have used for eye protection. However, while they did not offer any corrective benefits they did improve visual acuity by narrowing the field of vision. The use by historians of the term "sunglasses" is anachronistic before the twentieth century.

[] Invention of eyeglasses

The first eyeglasses were made in Italy at about 1286, according to a sermon delivered on February 23, 1306 by the Dominican friar (ca. 1255–1311): "It is not yet twenty years since there was found the art of making eyeglasses, which make for good vision... And it is so short a time that this new art, never before extant, was discovered... I saw the one who first discovered and practiced it, and I talked to him." Giordano's colleague Friar of Pisa (d. 1313) was soon making eyeglasses. The Ancient Chronicle of the Dominican Monastery of St. Catherine in Pisa records: "Eyeglasses, having first been made by someone else, who was unwilling to share them, he [Spina] made them and shared them with everyone with a cheerful and willing heart." By 1301, there were guild regulations in Venice governing the sale of eyeglasses.

Although there have been claims that Salvino D'Armate of Florence invented eyeglasses, these claims have been exposed as hoaxes. Furthermore, although there have been claims that encountered eyeglasses during his travels in China in the 13th century, no such statement appears in his accounts. Indeed, the earliest mentions of eyeglasses in China occur in the 15th century and those Chinese sources state that eyeglasses were imported.

The earliest pictorial evidence for the use of eyeglasses is 's 1352 portrait of the cardinal Hugh de Provence reading in a . Another early example would be a depiction of eyeglasses found north of the in an altarpiece of the church of , , in 1403.

These early spectacles had that could correct both (farsightedness), and the that commonly develops as a symptom of . It was not until 1604 that published the first correct explanation as to why convex and concave lenses could correct presbyopia and myopia.

[] Later developments

The scientist , who suffered from both and , invented bifocals. Serious historians have from time to time produced evidence to suggest that others may have preceded him in the invention; however, a correspondence between and , editor of , suggested that Franklin had indeed invented bifocals, and perhaps 50 years earlier than had been originally thought.

The first lenses for correcting were constructed by the astronomer in 1825.[]

Over time, the construction of spectacle frames also evolved. Early eyepieces were designed to be either held in place by hand or by exerting pressure on the nose (pince-nez). suggested that eyepieces could be held in place by a ribbon passed over the wearer's head, this in turn secured by the weight of a . The modern style of glasses, held by temples passing over the ears, was developed some time before 1727, possibly by the British optician . These designs were not immediately successful, however, and various styles with attached handles such as "" and were also fashionable from the second half of the 18th century and into the early 19th century.

In the early 20th century, at (with the assistance of H. Boegehold and A. Sonnefeld), developed the Zeiss Punktal spherical point-focus lenses that dominated the eyeglass lens field for many years.

Despite the increasing popularity of and , glasses remain very common, as their technology has improved. For instance, it is now possible to purchase frames made of special alloys that return to their correct shape after being bent. Other frames have spring-loaded hinges. Either of these designs offers dramatically better ability to withstand the stresses of daily wear and the occasional accident. Modern frames are also often made from strong, light-weight materials such as alloys, which were not available in the earlier times.

[] Types[] Corrective

Corrective lenses are used to correct of the eye by modifying the effective focal length of the lens in order to alleviate the effects of conditions such as , or . Another common condition in older patients is , which is caused by the eye's losing elasticity, progressively reducing the ability of the lens to (i.e. to focus on objects close to the eye).

The power of a lens is generally measured in . Glasses correcting for myopia will have negative diopter strengths, and glasses correcting for hypermetropia will have positive diopter strengths. Glasses correcting for astigmatism require two different strengths placed at right angles in the same lens. , made to conform to the prescription of an or , are used to make prescription glasses, which are then verified correct using a professional .

are a type of corrective glasses that do not use a lens and are claimed to help correct the eye's refractive error without introducing the image distortion of traditional lens-based glasses. Pinhole glasses do not actually refract the light or change the focal length, they operate by reducing the size of the blur circles in the retinal images. In blurry vision, every point on the object corresponds with a blur circle in the image. By reducing the size of the blur circles, they reduce the overlap of the blur circles in the image, clarifying the vision somewhat. They do not heal the eye of refractive error, as sometimes claimed, and vision with pinhole glasses, although clearer than without them, is not as clear as with conventional lenses.

Correcting one's vision is effected by use of lenses to move the focal point on the accordingly with one's particular needs. The depth of the curve, the thickness of the lens, and the precise shape of the lens can all be used to change the ,Oakley Eyepatch 2 Sunglasses Black Frame Black Lenes.

Eyeglasses can normally correct and compensate for four types of vision deficiencies:

Corrective eyeglasses can significantly improve the of the patient as they are helpful in both correcting vision disorders and reducing problems that appear when such lenses are needed, such as or squinting. A small amount of time is needed to adapt to the new lenses, usually 1–2 weeks.

Corrective lenses can also be added to work masks or eyeglasses used in .

Eyeglass lenses are commonly made from , including and . These materials reduce the danger of breakage and weigh less than glass lenses. Some plastics also have more advantageous optical properties than glass, such as better transmission of and greater absorption of . Some plastics have a greater than most types of glass; this is useful in the making of corrective lenses shaped to correct various such as , allowing thinner lenses for a given .

Scratch-resistant coatings can be applied to most plastic lenses giving them similar scratch resistance to glass. coatings designed to ease cleaning are also available, as are intended to reduce glare, improve night vision and make the wearer's eyes more visible.

[] Safety

Safety glasses are usually made with shatter-resistant plastic lenses to protect the eye from flying debris. Although safety lenses may be constructed from a variety of materials of various impact resistance, certain standards suggest that they maintain a minimum 1 millimeter thickness at the thinnest point, regardless of material. Safety glasses can vary in the level of protection they provide. For example, those used in medicine may be expected to protect against blood splatter while safety glasses in a factory might have stronger lenses and a stronger frame with additional shields at the temples to protect from sawdust, flying wood, or metal. The lenses of safety glasses can also be shaped for correction.

The American National Standards Institute has established standard ANSI Z87.1 for safety glasses in the United States, and similar standards have been established elsewhere.

OSHA provides guidance on the type of safety eyewear that should be used for a particular application.

Some safety glasses are designed to fit over corrective glasses or sunglasses. They may provide less eye protection than or other forms of eye protection, but their light weight increases the likelihood that they will actually be used. Modern safety glasses tend to be given a more stylish design in order to encourage their use. Corrective glasses with plastic lenses can be used in place of safety glasses in many environments; this is one advantage that they have over .

There are also safety glasses for , which are styled like wraparound sunglasses, but with much darker lenses, for use in welding where a full sized welding helmet is inconvenient or uncomfortable. These are often called "flash goggles", because they provide protection from welding flash.

Worker safety eyewear is available in various lens colors and/or with coatings to protect or enable eyesight in different lighting conditions, particularly when outdoors.

Nylon frames are usually used for protection eyewear for sports because of their lightweight and flexible properties. They are able to bend slightly and return to their original shape instead of breaking when pressure is applied to them. Nylon frames can become very brittle with age and they can be difficult to adjust.

Safety lenses are usually made of . Polycarbonate and Trivex lenses are the lightest and most shatter-resistant, making them the best for impact protection, though polycarbonate offers poor optics due to high dispersion, having a low of 31,Oakley Holbrook Sunglasses Brown FrameBrown Lens. Safety glasses are also available in prescription form for those persons who need corrective lenses. Depending on the particular area in which the individuals work, they may be required to wear side protectors additionally to safety eyeglasses.

In order to comply with the Z87.1 requirements, safety eyeglasses must pass the high velocity and high mass tests. Also, the lenses of protective goggles, faceshield windows and welding filters cannot be thinner than 3 mm, excepting high-impact lenses meant to be installed in prescription frames,Oakley Fuel Cell Sunglasses OO9096 Gray Frame Yellow Lens, which cannot be thinner than 2 mm.

[] Sunglasses

Sunglasses may be made with either prescription or non-prescription lenses that are darkened to provide protection against bright and, possibly, (UV) light. , which are , darken when struck by UV light.

Light is an added feature that can be applied to sunglass lenses. Polarization filters remove horizontally polarized rays of light, which eliminates glare from horizontal surfaces (allowing wearers to see into water when reflected light would otherwise overwhelm the scene). Polarized sunglasses may present some difficulties for pilots since reflections from water and other structures often used to gauge altitude may be removed, or instrument readings on may be blocked.

Gray or gray-green lenses produce the most natural appearance of colors. Yellow lenses increase color contrast and improve depth perception. They are worn by people driving at dusk, but are detrimental to vision at night. Any tint further reduces incoming light to the retina, and yellow tints also reduce glare-recovery times for night drivers. Brown lenses are common among golfers, but cause color distortion. Blue, purple, and intense green lenses provide less vision enhancement, and are mainly cosmetic.[] Some sunglasses with interchangeable lenses have optional clear lenses to protect the eyes during low light or night time activities and a colored lens with UV protection for times where sun protection is needed.

Sunglasses are often worn just for aesthetic purposes, or simply to hide the eyes. Examples of sunglasses that were popular for these reasons include teashades and . Many people wear opaque glasses to hide their eyes for aesthetic reasons.

[] 3D glasses

The on a two dimensional surface can be created by providing each eye with different visual information. 3D glasses create the illusion of three dimensions by filtering out the light not intended for that eye, resulting in each eye receiving a different image. The traditional glasses have one red lens and one blue or cyan lens or similar color filters.

A on the other hand uses filters, with each lens using opposite polarization, with the two images required for stereo vision polarized the same way and a silver screen so that polarization is preserved. Circular polarization is used so the image separation is maintained even if the viewer tilts their head (although the depth effect will suffer as the head tilt increases), which would not be possible with the more usual linear polarizers. Polarized 3D glasses allow for color 3D, while the red-blue lenses produce a dull black-and-white picture with red and blue fringes.

An uses electronic , while glasses and helmets have separate video screens for each eye, such as . The first three types have been distributed to audiences at , while video glasses are used by a single person.

[] Ready-made reading glasses

Reading glasses come in two main styles: full frames, in which the entire lens is made in the reading prescription, and half-eyes, the smaller "Ben Franklin" style glasses that sit lower down on the . Ready made reading glasses are available in strengths ranging from 1.00 to 3.50 Magnifying lenses or generic spectacles that are used to treat mild and can be bought off the shelf. Although such glasses are generally considered safe, an individual prescription, as determined by an or and made by a qualified , usually results in better visual correction and fewer headaches & visual discomfort. There have also been many cases where people have delayed having a proper eye examinaton with an optometrist or ophthalmologist, preferring to purchase off the shelf glasses, who have put their sight at risk from conditions such as , and complications from .[] It is important to stress off the shelf readers are not a replacement for regular eye examinations.

Full reading glasses are more suitable for people who only need them for close-up reading while half-eye reading glasses can be used to read at smaller or larger distances. The reading glasses are most of the time needed by people who have never worn glasses.

Although specialists recommend individuals who need to wear eyeglasses to have them custom-made according to their own needs, most of the patients prefer buying them at a or . This type of eyeglass-shopping became very popular in the 1990s when it was estimated that over 30 million pairs were sold per year. These reading glasses are not as expensive as the custom-made ones and they are certainly designed to catch the buyer's eye. Glasses that can be purchased off the shelf are available in a wide variety of colors and designs, suitable for different tastes.

One downside of ready-made eyeglasses is that their prescription is the same for each eye. The optical center of each lens is also the same. Yet, most individuals who need reading glasses need different prescriptions in each eye. Wearing ready-made eyeglasses can result in headaches, or , and these "side effects" increase with the extent of the prescriptions' mismatch. Another disadvantage is that people with a strong prescription will not find ready-made solutions. They usually cannot be found with spherical corrections greater than three or four , and of course are never corrected for astigmatism.

Sometimes people with broken frames get ready-mades with the idea of putting their old lenses into the new frames. While this might work, there are two problems with the idea. There is no standard for lens shapes, so without resorting to extreme fitting methods like glue, it is unlikely that the right fitting could be found. And the ready-mades themselves might have their existing lenses glued in place, so could be difficult to remove.

[] Bifocals, trifocals, and progressive lenses

As people age, their ability to focus is lessened and many decide to use multiple-focus lenses, which can be or even , to cover all the situations in which they use their sight. Traditional multifocal lenses have two or three distinct horizontal viewing areas, each requiring a conscious effort of refocusing. Some modern multifocal lenses, such as (known as "no-line bifocals"), give a smooth transition between these different focal points, unnoticeable by most wearers, while other glasses have lenses specifically intended for use with computer monitors at a fixed distance. People may have several pairs of glasses,Discount Oakley M Frame Sunglasses Green Frame Transparent Lens, one for each task or distance, with specific glasses for reading, computer use, television watching, and writing.[]

[] Extreme magnification (bioptics)

A form of glasses with extreme magnification to improve the distance vision of those with severe eyesight impairment, especially people with , are known as or a bioptic telescope. They may take the form of self-contained glasses that resemble or , or may be attached to existing glasses.

[] Fashion[] Personal image

For most of their history, eyeglasses were seen as unfashionable, and carried several potentially negative connotations: wearing glasses caused individuals to be stigmatized and stereotyped as pious clergymen (as those in religious vocation were the most likely to be literate and therefore the most likely to need reading glasses), elderly, or physically weak and passive. The stigma began to fall away in the early 1900s when the popular was regularly photographed wearing eyeglasses, and in the 1910s when popular comedian began wearing a pair of as "The Glass Character" in his films.

Since, eyeglasses have become an acceptable fashion item and often act as a key component in individuals' personal image. Musicians and became synonymous with the styles of eye-glasses they wore to the point that thick, black horn-rimmed glasses are often called "Buddy Holly glasses" and perfectly round metal eyeglass frames called "John Lennon Glasses." comedic actor was known in the United Kingdom for wearing thick, square, horn-rimmed glasses, which were in fact a sophisticated that alleviated his by allowing him to "hear" vibrations. Some celebrities have become so associated with their eyeglasses that they continued to wear them even after taking alternate measures against vision problems: United States Senator and comedian continued to wear non-prescription glasses after being fitted for contacts and getting , respectively.

Other celebrities have used glasses to differentiate themselves from the characters they play, such as , who wears oversized, 1980s-style round horn-rimmed glasses as on the soap opera , and , who wears glasses to separate his professional persona as a from his stage persona as .

Recently, many players wear with thick plastic frames like during , that draws comparisons to .

In fiction, eyeglasses have become a standard component of various heroes' disguises, allowing them to adopt a nondescript demeanor when they are not in their superhero persona: is well known for wearing 1950s style horn-rimmed glasses as , while wears either round, Harold Lloyd style glasses or 1970s style as .

[] Styles

In the 20th century, eyeglasses came to be considered a component of ; as such, various different styles have come in and out of popularity. Most are still in regular use, albeit with varying degrees of frequency.

A rare and currently noncommercial variation are rimless and frameless glasses attached to a at the bridge of a wearer's nose. Such glasses have the visual look of the .

[] Redistribution

Some organizations like , and provide a way to donate glasses and sunglasses. Unite For Sight has redistributed more than 200,000 pairs.

[] See also[] Notes[] References[] Bibliography[] External linksWikiquote has a collection of quotations related to: Wikimedia Commons has media related to: Look up  or in Wiktionary, the free dictionary.HistoricalModern

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