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The concept of photo negatives can be confusing. You see them in film developing centers, cameras, and photo envelopes, but you may not understand them. So what exactly are photographic negatives and why are they used? Hopefully this article will shed some light on the subject, so to speak.

A photo negative image is an exact copy of a normal image, but the colors and tones are reversed. I’m sure you’ve seen the reddish film strips that come with developed photos in envelopes. Those are negatives. If you want more copies of your photos you take them from the negatives. Look at them and you’ll notice that the bright and dark tones are reversed and the colors are opposite as well. What should be blue is yellow, what should be purple is green, and so on (based on the Red Green Blue color model).

Negative images are created by the film’s chemical reaction to light. The unexposed chemicals wash away and the negatives become opaque, or seen through. To make a copy of a photograph from a negative, another negative is made off of that, actually creating a positive. This might remind you of algebra, where two negative numbers multiplied by each other become a positive. This is considered the two step process in photography. There are other processes such as positive, or slide, but the negative is the most common chemical based process.

The most common color negative film is called C-41. The negative is made up of different colored emulsions layered onto an acetate or polyester base. Each layer is sensitive to certain colors and underneath each layer are collodial silver or dye filters. When exposed each filter removes light and exposes the layer beneath it. When developed, the dye couplers inside of each emulsion layer produce the colors.

So why still use photo negatives when we now have scanners? Convenience and quality. Typically when you scan an image you’ll lose detail, whereas with the negatives, you have entire original albums intact in a small envelope. If you have photograph negatives lying around that you’d like prints of, your best bet is taking them to a photo lab. You can scan negatives yourself though if you own a properly equipped digital camera or photo scanner. Most regular flatbed scanners won’t do this, but with a fluorescent lamp and a high resolution scan you can manage it. Of course with the popularity of digital cameras photograph negatives are needed less and less. But it’s still good to understand the basics of photo negatives.

About the Author:

J.F. Borno enjoys writing about photography, specifically early American tintypes and Civil War photographs.

Article Source: ArticlesBase.com – Photograph Negatives Explained

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The concept of photo negatives can be confusing. They are seen in the film development centers, chambers, and envelopes of photos, but can not understand. So what are exactly photographic negatives and why are they used? Hopefully this article will shed some light on the subject, so to speak.

A photographic image refusal is an exact copy of a normal picture, but the colors and tones are reversed. I'm sure you've seen the film strips that come with reddish color photos developed on the envelopes. These are negative. For additional copies of the photos you take them from the negatives. Look at them and you will notice that the light and dark are reversed and the colors are opposites as well. What should be blue is yellow, which should be purple is green, and so on (based on the color model Blue Green Red).

Negative images are created by the chemical reaction of the film to light. Unexposed chemicals wash and negative becomes opaque or see through. To make a copy of a photograph from a negative, one negative is made outside that in fact the creation of a positive. This can remember algebra, where two negative numbers multiplied by itself become a positive. This is considered the two-step process in photography. There are other processes such as positive or slides, but the negative is the most common chemical based process.

C color negative film most common is called-41. The negative emulsions composed of different layers of color in an acetate or polyester base. Each layer is sensitive to certain colors and below each layer are of colloidal silver or dye filters. When described each filter removes light and exposes the layer beneath it. Once developed, the dye couplers in each layer of emulsion to produce the colors.

So why continue to use the photo negatives when we now have scanners? Comfort and quality. Normally when you are scanning an image you'll lose detail, while that with the negatives, you have all original albums intact in a small envelope. If you have photographic negatives to the view you want as prints, the best is taking them to a photo lab. You can scan negatives yourself but if you own a digital camera or scanner properly equipped photo. Most flatbed scanners do not regulate this, but with a fluorescent lamp and a high resolution scan can be managed. Of course, with the popularity of digital cameras increasingly negative needed less. But still good to understand the basics of photographic negatives.

About the Author:

J.F. Borno enjoys writing about photography, specifically early American tintypes and Civil War photographs.

Article Source: ArticlesBase.com – Photograph Negatives Explained