A interrogate roughly speaking the zoom lenses on my camera?
Answers: You have an E-Volt Olympus camera, nice choice! The "mm" is the focal length, or the measured difference contained by length between the outer lens and the sensor inside your camera body.
It sounds like you don't necessitate a technical description so here's a description contained by plain language...
The bigger the number, the more power of magnification. 40mm is more or less the average view humans hold without any aid, regular viewing - you standing in a area just looking around. If you walk higher you are starting to magnify close to you would if using a telescope. If you go lower you are widen your range, expanding phantasm from side to side.
If you have an E-500 or an E-510 I found this great site, but it sounds close to you need some bare bones first, even this site may not help... Get a book on photography from your library, I other recommend "The Joy of Photography" it was printed past digital cameras existed, but it explains the basic principles of photography extremely very well and you need to know these whether you shoot picture or digital.
Here's the link if you hold an Olympus
http://www.wrotniak.net/photo/oly-e/e500...
The smaller the number, the more field of scenery you will have, or you would probally read aloud the LESS zoomed it is. The mm number single refers to the distance of the lens from the focal plane of your camera sensor if digital, or film plane if picture. The higher the mm number, the farther the lens is from the picture, and thus it acts similar to a telescope and directs a much smaller field of landscape onto the sensor or film, but it will be magnified. 50mm is considered a "normal" lens next to typical film cameras because this lens "sees" much like peas in a pod field of outlook as our eyes see.
Then you get into assorted sensor sizes and film sizes that alter the effectual field of vision of the same lens. In other words, a 50mm lens on a typical digital camera will be cropped by more or less 1.6, making it in effect an 80mm lens. On a atmosphere format film camera, a 50mm lens is effectively a 30mm lens bacause the motion picture negative size is much larger than the run of the mill 35mm film size.
Don't verbs to much about it. Just know the smaller number is considered the far-reaching angle portion of the lens, while the larger number is the telephoto "zoomed" portion of the lens.
Steve
http://www.pbase.com/s_parrott
14mm is an extremely wide angle lens. 45mm is close to what's considered a "normal" lens since it approximates the angle of panorama of the human eye.
The 40mm lens is also close to what's considered a "normal" lens. When you zoom to 150mm its as though you physically moved closer 3.75 times to your subject even though you stayed in like peas in a pod place. (150 divided by 40 = 3.75). So if you focus on your subject at 40mm and zoom in to 150mm your subject will appear 3.75 times bigger.
be in motion to howstuffworks.com to find out
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