wainism said:those numbers stand for the focal lengths
erm, easily put, its the zoom.
10mm - wide angle
300mm - zoom
wait for the experts to get into the technicalities...
hope it helps
kensh09 said:i very newbie. Need to ask a stupid qns.
example Lens have 10mm-300mm, what do those numbers stands for? ;p
ortega said:Generally the greater the diff between the zoom the less lens you need to buy.
But usually, it also means that the image quality drops.
The numbers stand for the focal lenght range of the zoom lens.
There are prime lenses that are fixed focal lenght, e.g 50mm
The difference in between the numbers is the field of view that you get.
Lots of information on this on the internet, seek and you will find.
Don't worry to much about the tech bits,
shoot first!
It is better to have a great image of so-so quality that no image at all.
kensh09 said:Saw some lens tat have fixed focus length. Does it makes the quality better compared to adjustable? Does it oso means that this len can only take picture of a fixed distance?
kensh09 said:Saw some lens tat have fixed focus length. Does it makes the quality better compared to adjustable? Does it oso means that this len can only take picture of a fixed distance?
litefoot said:Your question was about focal length which has nothing to do with zoom lens and its quality.
Zoom lens is like having a few lenses of different focal length in one. However, this type of lens are built with more pieces of glass (lens elements). Light are bent when passing through these elements, more elements will mean a higher loss in the details which will result a loss in constrast and sharpness. Too much bending of light will also result in image distortion etc. These short comings are overcome by lens design such as aspherical elements that reduce image distortion, better multi-coating and the use flourite compound for reducing the loss of details. In general its easier to design fixed focal length (or prime) lenses which are usually lesser elements in construction, therefore capable of better resulting image.
kensh09 said:oic....now i can understand better.....so a prime lens is a len that had fixed focus lens, means cannot zoom in and out rite. Which oso means if i want a clear picture i have to move my body towards and away from the object, unless zoom lens which can be zoom. Right bo?
wainism said:those numbers stand for the focal lengths
erm, easily put, its the zoom.
10mm - wide angle
300mm - zoom
wait for the experts to get into the technicalities...
hope it helps
obewan said:ic... :think: So fisheye len belongs to which caterory ?? How many mm ?
Or is it a kind of special len ?
Dann said:Yo man u almost got it except for that part, You don need to move to get a clear pic, the lens can focus to get clear pics. You only move forwards or backwards to get a narrower or wider field of view. ( further to get wider view, nearer for narrower view but bigger subject.)
With a zoom lens u can stay where u r and let the lens do the walking for u. :bsmilie:
obewan said:ic... :think: So fisheye len belongs to which caterory ?? How many mm ?
Or is it a kind of special len ?
litefoot said:Wide angle. Usually less than 10mm.