i have a s45. wanna know if a 2x teleconverter will double the optical zoom? and if i stack on will there be any quality loss?
naresh666 said:so will there be any quality loss?
naresh666 said:so will there be any quality loss?
Just something I always wanted to ask:roygoh said:A 35-105mm zoom lens is 3X, and a 70-210mm zoom lens is still 3X, even a 1000~3000mm zoom lens (if one exisits) is still 3X.
The number of "X" is to indicate the ratio between the max and min focal length of a zoom lens, it is not an absolute number.
And I did miss out the effect of vignetting. With the TC attached, there will be vignetting when the camera is zoomed out. So the usefull focal range with the TC attached will not be from 70~210, but more likely from 140mm~210mm.
The best thing is to forget about how many X you have, but just to look at the actual range you can achieve.
Without TC, you can zoom from 35mm to 105mm (3X).
With TC, your effective zoom range becomes 140mm to 210mm (1.5X).
Trying to quantify the overall zoom range by a single number of X is quite meaningless.