Need definition or meaning of some technical terms of Digital Camera?

Question

Zoom wide,
Zoom tele,
Macro focus range,
Max. aperture wide,
Min. aperture tele,
Max. aperture tele,
Sequence(FPS),
USB.

Answer 1

Let's forget about zoom for a minute and just talk about focal lengths. Depending on what school you went to, a 'normal' focal length is around 50 - 55 mm. This is supposedly similar to what the human eye sees naturally. Wider angles have lower numbers, so a 35mm (nothing to do with 35mm film) is a wide angle lens. 28 mm is a very wide angle lens and 12 mm is an ultra wide angle lens. (the precise terms vary a little).

Conversely any lens with a number higher than 55mm is a telephoto lens. 80 mm is telephoto. 200mm is super telephoto and so on.

Lenses can have fixed lengths, many high quality portrait lenses may have a fixed length of 50 mm. However some lenses commonly have the ability to vary their focal length. For example 50 - 120 mm is a zoom lens that covers the range from normal to telephoto. A lens that covers from 18 - 55 mm is still a zoom lens but is not telephoto, so do not get the two confused.

Aperture is how much of the surface area of the lens can be used for actual photography. In a perfect world you would be able to use all the surface area this would give the lens an aperture value of f1. In the real world even a high quality lens may only use half of the area and therefore has an aperture value of f2. Some lenses can only use a maximum of 1/5 of the glass and therefore are said to have a maximum value of f5. Sometimes we need to cut down the amount of light entering the lens so we have a diaphragm that can close in a circular shape towards the center of the lens reducing the area of glass used. When only 1/8 of the glass is not being covered by the diaphragm, we are now using the lens at f8. 1/16 of the lens and we are running at f16 and so on.

Non-fixed or zoom lenses may have different maximum aperture values depending on how much they are zoomed, so a 28 - 200 lens may be able to use 1/3.5 of the glass at 28 mm but only able to use 1/5.6 of the glass when zoomed to 200 mm. Therefore the maximum aperture of this lens is said to be f3.5 - 5.6. (notice how the lower the number the larger the aperture)

The minimum aperture is a measure of how tightly the diaphragm can close down, in some cases leave as little as only 1/45 of the glass available to use or in other words a value of f45!

Macro is the ability to focus on an object close to the lens usually at a telephoto length, thus magnifying the image. The macro focus range is the range of distances the lens can focus on when operating in this mode.

Sequence(FPS) refers to the camera's ability to capture video. FPS = frames per second. If video is captured at less than 15 frames per second, is looks jittery and poor quality. Most cameras these days can do 25 - 30 FPS.

USB = Universal Serial Bus. This is a computer standard allowing devices to be plugged in to a computer that is running. Nearly all cameras connect via USB and all computers less than 5 years old have USB ports.

Hope this helps.

Answer 2

You still didn't give us the model name...

See http://www.digitalcamerabasics.com/ for some help with these terms.