In digital camera 1X optical zoom equals to how many foot-meters?

Answer 1

Your question doesn't make sense. When talking about zoom lenses, the zoom ratio is calculated by dividing the maximum focal length by the minimum focal length. A 70-300mm zoom lens would be a 4.3X zoom lens.

It also has nothing to do with digital versus film. A 4.3X zoom lens is a 4.3X zoom lens regardless of what kind of camera you put it on. Focual length is simply the distance from the optical center of the lens to the film plane (or digital sensor).

A 1X optical zoom would be a given focal length divided by itself. 35mm divided by 35mm is 1X. In photography we call this a prime lens.

If what you're asking is how many feet/meters are there in each 1X of a zoom lens, it's a question that cannot be answered because there is no correlation between camera to subject distance and the degree of zoom.

There is, however, a correlation between the magnification power of a lens and camera to subject distance.

I'll use 35mm to explain because it simpler. You hear references to a so-called normal lens. In 35mm this is considered a 50mm lens. A "normal" lens is generally considered a lens that has a similar perspective to the human eye.

When you look at a telescope, you will see a power of magnification (the same with binoculars). A 7 power telescope magnifies an image 7 times what the normal eye can see, in otherwords an object viewed through a 7 power telescope will appear 7 times closer than it actually is. 7 power is written 7X. A 10X telescope would be 10 power.

If you want to roughly guess the magnification power of a telephoto lens for a camera -- again either digital or film, lenses are lenses -- for 35mm you would divide the focal length of the telephoto by 50. A 300mm lens then would be roughly a 6 power lens (or a 6X lens), which means objects seen through a 300 lens will appera to be about 6 times closer than they are.

If you place an object 60 feet away from you and view it through a 300mm lens, it will look the same as if viewed through a 50mm lens at 10 feet.

These are rough comparisons, but I hope they give you an idea, and I hope I've given you the answer you were looking for.

Answer 2

There are two answers:
1. It depends on the size of the sensor. Just for magnification, 1X means the length is the same as the sensor size. With 35mm film, that means 1X is 35mm long. Digital cameras almost all have smaller sensors, so 1X is shorter (the companies convert and report a "35mm equivelent" though).
2. It depends on if is has a zoom. If a camera is reported to have a 3X zoom, that doesn't necessarily mean it goes from 1X to 3X. Usually it's more like 28mm to 80mm equivelent, so that would be .8X to 2.3X (which is a range of 3X).

Answer 3

1x optical equals to how many foot meters

Answer 4

There's no correct answer for this question. The X is a reference of the shortest to longest focal length. Therefore, 3X = 10mm-30mm or 20mm-60mm or 30mm-90mm etc.
1X as mentioned in the answer above simply refers to a fixed focus lens which could be any focal length between 8mm to 800mm.

Answer 5

You cannot do such a calculation. And in any event, a 1x zoom is no zoom at all, but a fixed focal length lens.

Answer 6

ok 1x what? 35mm or 28mm or what.

what size sensor? what camera?

there is no answer to this question i will give an example of what it would sound like if it were a cat your asking about and not : 1x optical zoom:

in cats whats equal to a good jump in meters/feet?

a

Answer 7

check this out first my suggestion go to yahoo shopping digital cameras digital camera GUIDE be sure to check titles on the left side the guide should answer your questions

Answer 8

Interested in this as well

Answer 9

Thanks for the answers, very much appreciated.