Although use electronic image sensor photosensitive digital camera Canon EOS 1100D Charger has become the mainstream of the current market, but many photography enthusiast still clung to film cameras; For today's most introductory lovers, the film has gradually become a "mysterious legend". Perhaps we have seen it, but would not necessarily know the basic working principle and film chemical compositions. Therefore we invite senior photography enthusiasts rice meal for everyone to do detailed introduction.
After who see the Canon EOS Kiss X50 Charger light, can follow the light intensity happen to produce "latent-image different after a certain" and then the chemical or physical treatments can produce visible image photography materials, namely called "photosensitive material"; The film, a CCD, CMOS are. Now digital camera image sensor adopts photoelectric transformation of energy to produce images, and traditional film is mainly USES the chemical changes to achieve the same purpose. The film light-sensitive materials can be divided into silver films and the silver film two kinds, the first kind is introduced as silver film (below - the main film) chemical composition and performance. canon eos rebel t3 charger
Film enhancement
First of all we want to know, the film consists mainly of "photographic emulsions" and "emulsions support the body" composition. The main components of the emulsion is gelatin and granular halogenating silver and silver evenly dispersed halogenating YuMingJiao; And support to use a different body because paper-based, tablet and glass, they and emulsion products for the combination of corresponding ZhaoXiangZhi, film and YingPian (GanBan). Next we detailed halogenating silver, gelatin talk the specific chemical composition and the enhancement of influence of performance.
Second-ranking halogenating silver
The so-called "silver" means halogen and metallic silver form the floorboard of the compounds, here we mainly discuss silver chloride, XiuHuaYin and silver iodide. Soluble in water, silver chloride higher molecular weight of silver, solubility lower; It is very short purple of wavelength area and ultraviolet photosensitive; XiuHuaYin photosensitive area light to blue; The role of light-sensitive silver iodide focuses on increasing range. If XiuHuaYin mix of silver iodide and adding range, photosensitive emulsions HaoWeiMi reached 500.
The photographic emulsions different halogenating silver composition, photosensitive sensitivity is different, press photosensitive machine speed permutation order is adding trace of silver iodide - XiuHuaYin of photographic emulsions XiuHuaYin second, the quickest and most slow silver chloride. According to these characteristics, generally negative emulsions contain XiuHuaYin and small amounts of silver iodide, and silver chloride applies only to low-speed positives emulsions. Halogenating silver crystal grain diameter scope for 20 to 50 microns to 50 nano, most in the canon lp-e10 charger diameter size between 0.1 ~ 4 microns. According to its type, shape, size and distribution, largely determines the photosensitive material characteristics, such as photographic speed, solutions like force, contrast, etc. As commonly used silver chloride to get fine particles, high contrast or makes images to palm black tonal.
Second-ranking gelatin
Gelatin from the skins of animals, bone extract a high-level glue, gelatin is sensitive material in the film was the biggest, the most complex dosage of the raw material, performance with many functions, basically has the following three points:
1, decentralized and suspended halogenating silver, prevent its sedimentary - gelatin sticky properties that make emulsions in piece foundation to coating film, forming the emulsion unifor thickness, prevent fall off. Layer Gelatin can be adsorbed on silver crystal surface, achieve halogenating uniform separation crystals, prevent gathered and sedimentary role, this is silver light-sensitive materials can form clear accurate imaging important reasons. Gelatin concentration have certain influence on photosensitive properties, canon nb-4l charger such as increasing concentration can form the more fine halogenating silver grains, increase contrast to reduce mode and the results.
2, development, has gelatin silver grains, is wrapped halogenating photographic difference of parallel to the imaging difference - halogenating silver necessary conditions in a light-sensitive chemical properties of lively will immediately be restored after. Gelatin chemical inert package of silver, discussed the spontaneous reductive resistance in the developing process, make halogenating reaction that produces the lag between the silver reduction, begin from photosensitive strong section begins, restore the image.
3, the canon nb-2lh charger increase feeling and inhibition of gelatin substance, can improve HuiWu mode and inhibition of emulsion according to the impurity in - gelatin role for sulfur classification can fee increase feeling agent (sulfide impurities), reduction increase feeling agent (aldehydes and ketones) and inhibitor reduction (close to gelatin molecular weight of sulfur protein). Sulfide impurities can cause silver-contained atomic bomb photosensitive nuclear generated halogenating silver crystal, increase the quantity and improve photographic nuclear photographic speed. In addition, gelatin silver reduction in halogenating reaction with off halogen ion, prevent and reduce halogen ion and silver again, thereby improving emulsion layer with photographic efficiency. Different materials gelatin contains three kinds of material of different proportion, produce different characteristics, such as small cowhide can make give inhibitory supreme gelatin, whale skin less, but HuiWu gelatin liquor mode is not high. CANON Battery Charger
After who see the Canon EOS Kiss X50 Charger light, can follow the light intensity happen to produce "latent-image different after a certain" and then the chemical or physical treatments can produce visible image photography materials, namely called "photosensitive material"; The film, a CCD, CMOS are. Now digital camera image sensor adopts photoelectric transformation of energy to produce images, and traditional film is mainly USES the chemical changes to achieve the same purpose. The film light-sensitive materials can be divided into silver films and the silver film two kinds, the first kind is introduced as silver film (below - the main film) chemical composition and performance. canon eos rebel t3 charger
Film enhancement
First of all we want to know, the film consists mainly of "photographic emulsions" and "emulsions support the body" composition. The main components of the emulsion is gelatin and granular halogenating silver and silver evenly dispersed halogenating YuMingJiao; And support to use a different body because paper-based, tablet and glass, they and emulsion products for the combination of corresponding ZhaoXiangZhi, film and YingPian (GanBan). Next we detailed halogenating silver, gelatin talk the specific chemical composition and the enhancement of influence of performance.
Second-ranking halogenating silver
The so-called "silver" means halogen and metallic silver form the floorboard of the compounds, here we mainly discuss silver chloride, XiuHuaYin and silver iodide. Soluble in water, silver chloride higher molecular weight of silver, solubility lower; It is very short purple of wavelength area and ultraviolet photosensitive; XiuHuaYin photosensitive area light to blue; The role of light-sensitive silver iodide focuses on increasing range. If XiuHuaYin mix of silver iodide and adding range, photosensitive emulsions HaoWeiMi reached 500.
The photographic emulsions different halogenating silver composition, photosensitive sensitivity is different, press photosensitive machine speed permutation order is adding trace of silver iodide - XiuHuaYin of photographic emulsions XiuHuaYin second, the quickest and most slow silver chloride. According to these characteristics, generally negative emulsions contain XiuHuaYin and small amounts of silver iodide, and silver chloride applies only to low-speed positives emulsions. Halogenating silver crystal grain diameter scope for 20 to 50 microns to 50 nano, most in the canon lp-e10 charger diameter size between 0.1 ~ 4 microns. According to its type, shape, size and distribution, largely determines the photosensitive material characteristics, such as photographic speed, solutions like force, contrast, etc. As commonly used silver chloride to get fine particles, high contrast or makes images to palm black tonal.
Second-ranking gelatin
Gelatin from the skins of animals, bone extract a high-level glue, gelatin is sensitive material in the film was the biggest, the most complex dosage of the raw material, performance with many functions, basically has the following three points:
1, decentralized and suspended halogenating silver, prevent its sedimentary - gelatin sticky properties that make emulsions in piece foundation to coating film, forming the emulsion unifor thickness, prevent fall off. Layer Gelatin can be adsorbed on silver crystal surface, achieve halogenating uniform separation crystals, prevent gathered and sedimentary role, this is silver light-sensitive materials can form clear accurate imaging important reasons. Gelatin concentration have certain influence on photosensitive properties, canon nb-4l charger such as increasing concentration can form the more fine halogenating silver grains, increase contrast to reduce mode and the results.
2, development, has gelatin silver grains, is wrapped halogenating photographic difference of parallel to the imaging difference - halogenating silver necessary conditions in a light-sensitive chemical properties of lively will immediately be restored after. Gelatin chemical inert package of silver, discussed the spontaneous reductive resistance in the developing process, make halogenating reaction that produces the lag between the silver reduction, begin from photosensitive strong section begins, restore the image.
3, the canon nb-2lh charger increase feeling and inhibition of gelatin substance, can improve HuiWu mode and inhibition of emulsion according to the impurity in - gelatin role for sulfur classification can fee increase feeling agent (sulfide impurities), reduction increase feeling agent (aldehydes and ketones) and inhibitor reduction (close to gelatin molecular weight of sulfur protein). Sulfide impurities can cause silver-contained atomic bomb photosensitive nuclear generated halogenating silver crystal, increase the quantity and improve photographic nuclear photographic speed. In addition, gelatin silver reduction in halogenating reaction with off halogen ion, prevent and reduce halogen ion and silver again, thereby improving emulsion layer with photographic efficiency. Different materials gelatin contains three kinds of material of different proportion, produce different characteristics, such as small cowhide can make give inhibitory supreme gelatin, whale skin less, but HuiWu gelatin liquor mode is not high. CANON Battery Charger
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