Photography is the art, science and practice of creating durable images by recording light or other electromagnetic radiation, either chemically by means of a light-sensitive material such as photographic film, or electronically by means of an image sensor. Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed exposure. The result in an electronic image sensor is an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing. The result in a photographic emulsion is an invisible latent image, which is later chemically developed into a visible image, either negative or positive depending on the purpose of the photographic material and the method of processing. A negative image on film is traditionally used to photographically create a positive image on a paper base, known as a print, either by using an...
Faraz Sarwar started the Discussion
on May 23, 2013 , 10:01 pm
Instagram Social Media
To all the people of KolkataIf you upload pictures on Instagram and use # (hashtags) then please mention Kolkata along with the # tags . There is only around 18k + pictures with Kolkata # tags which means Kolkata is still behind in Social Media. C more »
Sabi Deepak and 2 more commented on the blog
on May 04, 2013 , 08:53 am
By an IQless person...
.Hi friends,Since every Tommy, Dicky and Harry is into blogging these days, I too suddenly found out that my future lies in blogging (or so I think). Let me introduce myself first. I am a middle-aged housewife who doesnt have a huge IQ. That is why I am going with the name IQless.My blog will be about the silliest of things. I wont be talking about any intellectual stuff and I wont be using words which are alien to me such as hegemony, obstreperous, proclivity, quagmire, etc etc. But I am sure more »