I like to know what causes the production of a negative and a positive (print)?

Thank you!!!

-- Cindy Poh (kmgck@hotmail.com), September 05, 2001

Answers

A negative and prints (positives) are usually the result of handing in a suitable exposed film at a processing lab, and handing over the required amount of money.

-- Pete Andrews (p.l.andrews@bham.ac.uk), September 05, 2001.

Peter,

Why bother with pointless uninformative answers? If you don't like the question why respond?

Cindy,

Film and paper both respond to light and turn darker (forget colors for the time being), when developed, where they were exposed to light. Passing light through the negative and exposing printing paper does the exact same thing.

So, if you take a picture of a black wall with a white circle on it, the film "sees" the black wall and turns clear during development. The portion that "sees" the white circle trns black during development. This produces a negative.

When a print is made, light passes through the clear portion of the negative and the paper will turn black when developed. The white circle is black on the film and, since no light passes through it to the paper the paper stays white in this area, thus reproducing the black wall and white circle.

If you need a better explaination of this process, I would recommend the photography books at any decent library, or bookstore.

-- Ed Farmer (photography2k@hotmail.com), September 05, 2001.

Ed,

I thought your explanation was clear and concise! Thanks for taking the time to do it. :-)

-- Hung James Wasson (HJWasson@aol.com), September 06, 2001.

"All about camera?" - Come on Ed, this is obviously some kid taking the lazy way out of a school assignment, or a troll.
As good as your answer was, this really isn't the forum for learning photography from scratch. Maybe we need a raw beginner section?

-- Pete Andrews (p.l.andrews@bham.ac.uk), September 06, 2001.

Try the Kodak on-line library:

http://www.kodak.com/global/en/service/library/

-- Jeff Polaski (polaski@acm.org), September 06, 2001.

pete:

"All about camera" seems like it is from a person whose first language is not English, and the name suggests she may be a neighbour of mine here in Singapore. Sound definitely:Singlish" to me, or close.

Anyway, the answer lies in the refereneced website, books at the library and any of many magazines, if a school or classes are not available in Cindy's area.

John Hedgecoe has a great series of books on basic photography and teh New York Institute courses are ery good, but do cost a few bucks.

There is no royal or rapid road to learning any skill/art.

Hang in there Cindy, and don't get put off by a bit of arrogance or something like that. We all started somewhere.

There are no such things as dumb questions, just dumb answers and dumb mistakes.

Cheers

-- RICHARD ILOMAKI (richardjx@hotmail.com), September 06, 2001.

Should anybody with any real enthusiasm to learn about a subject really need telling to visit their library, read some books, search the web, and read the articles you find there, or attend some classes? This is fundamental stuff.
If I should ever get interested in, say, dog breeding, then I wouldn't start by demanding "Tell me all about dogs" from a dog enthusiast's web forum. The question's just too broad to answer properly.
Anyone who's found their way to this site should be able to actually use a search engine, and find something out for themselves. English as a second language or not.
Perhaps Cindy herself can settle this. Are you really interested Cindy, or was it just an idle 5 minutes at the keyboard?

-- Pete Andrews (p.l.andrews@bham.ac.uk), September 06, 2001.