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( Photo)
A photograph (often shortened to photo) is an image created by light falling on a light-sensitive surface, usually photographic film or an electronic imager such as a CCD or a CMOS chip. Most photographs are created using a camera, which uses a lens to focus the scene's visible wavelengths of light into a reproduction of what the human eye would see. The process of creating photographs is called photography. The word "photograph" coined 1839 by Sir John Herschel and is based on the Greek f?? (phos), "light" + ??af?? (graphis), "stylus", "paintbrush" or ??af? (graphê), "representation by means of lines" or "drawing", together meaning "drawing with light".[1] The first permanent photograph was made in 1826 by a French inventor, Joseph Nicéphore Niépce, building on a discovery by Johann Heinrich Schultz (1724) that a silver and chalk mixture darkens under exposure to light. Niépce and Louis Daguerre refined this process. Daguerre discovered that exposing the silver first to iodine vapor, before exposure to light, and then to mercury fumes after the photograph was taken, could form a latent image; bathing the plate in a salt bath then fixes the image. These ideas led to the famous daguerreotype. The daguerreotype had its problems, notably the fragility of the resulting picture, and that it was a positive-only process and thus could not be re-printed. Inventors set about looking for improved processes that would be more practical. Several processes were introduced and used for a short time between Niépce's first image and the introduction of the collodion process in 1848. Collodion-based wet-glass plate negatives with prints made on albumen paper remained the preferred photographic method for some time, even after the introduction of the even more practical gelatin process in 1871. Adaptations of the gelatin process have remained the primary black-and-white photographic process to this day, differing primarily in the film material itself, originally glass and then a variety of flexible films. Color photography is almost as old as black-and-white, with early experiments dating to John Herschel's experiments with Anthotype from 1842, and Lippmann plate from 1891. Color photography became much more popular with the introduction of Autochrome Lumière in 1903, which was replaced by Kodachrome, Ilfochrome and similar processes. For many years these processes were used almost exclusively for transparencies (in slide projectors and similar devices), but color prints became popular with the introduction of the Chromogenic negative, which is the most-used system in the C-41 process. The needs of the movie industry have also introduced a host of special-purpose systems, perhaps the most well known being the now-rare Technicolor.
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Photo Subcategories
Photo Articles
Advances in Skin Rejuvenation Focus on Enhancing Collagen and Elastin by Joel Sussman
For many Baby Boomers trying to slow down the aging process, hyperpigmentation means a lot more than just dark spots on their skin. In a culture obsessed with youth and beauty, age spots may not only have a negative impact on one’s self-esteem, but t...
Anti-Aging Photofacials by Carson Danfield by Carson Danfield
Where the skin is in a state of disrepair and laser treatment isn't sufficient to fix the problems then it might be necessary to consider having a photo facial.
Photo facials have the ability to make a more positive impact on the repair of de...
Remergent Skin Care Products Restore DNA And Promote Healthy Skin by Linda Biegert
As the skincare market continues to evolve in terms of popularity, so to do advances that are heralding the next generation of skin care therapies. At Advanced Aesthetic Laser Center, the next generation of skin and facial rejuvenation products has ...
LED Photo-Rejuvenation Skin Care: Fact or Fiction by Stanley Stanbridge
It’s a wonderful time we live in with technological advancements streaming at us at an incredible rate. Never in history have we had such a large number of, not only skin care products and acne treatment products, but new products in general, servic...
With a good foundation LED Photo Rejuvenation Can Work Miracles! by Stanley Stanbridge
As with any natural skin care therapy or skin care treatment there is nothing that works for everybody all the time. The same rule applies to photo facial and LED photo-rejuvenation. On the other hand, thankfully it does work for most of us. So wha...
If LED Skin Care Treatment is so Effective - Why haven't I heard of it Before Now? by Stanley Stanbridge
You’re talking to your friends about new skin care products and all of the new devices on the market. Somebody mentions LED photo rejuvenation skin care treatment. You consider yourself knowledgeable about new products and procedures but have never ...
LED Photo-Rejuvenation for Acne Skin Care by Stanley Stanbridge
Many are discovering the amazing value and benefits of LED based skin care treatment and photo rejuvenation. Recent developments have resulted in LED based acne relief for people seeking cutting edge technologies in the area of acne treatment produc...
Confused about the difference between Laser and LED based skin photo rejuvenation? - Part 3 by Stanley Stanbridge
In the final segment of this 3 part series of short articles we’ll compare laser and LED based photo rejuvenation.
We’ve discovered in the first 2 articles that lasers by their nature shine a very concentrated or focused beam of light, wherea...
Confused about the difference between Laser and LED based skin photo rejuvenation? - Part 2 by Stanley Stanbridge
In Part 1 of this series we found out what Lasers are and why they can work in skin photorejuvenation. In Part 2 we’ll discuss LED’s and why they work so well when used as the light source in photo rejuvenation devices.
We’ll start with exac...
Body Building Photos by John Smi
If you are serious about body building, you will want to have photos that document your progress down the road towards having a beautifully sculpted body. When you are able to have a progression of photos that will show your body building journey, yo...
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