:dunno: I tot quality is more affected by focusing and the zooming method in the design of lens construction..ie does not extend when zooming or focusing? didn't know the aperture affects it other than the bokeh.
:dunno: I tot quality is more affected by focusing and the zooming method in the design of lens construction..ie does not extend when zooming or focusing? didn't know the aperture affects it other than the bokeh.
The aperture type tells a bit, constant aperture zooms often hold much better quality, because they need to maintain higher quality glasses to refract the light at all ranges at the same aperture, ie, the inner/outer portions of the glass are near perfect grade.
f/3.5-5.6 means to say, the outer portions won't be that beautiful at the longer end, thus they step down the aperture to concentrate the light towards the middle.
That's why a 70-200VR f/2.8 is so expensive, and a 70-300 f/4-5.6 is only like 1/6 it's price.
Glass matters definitely, the construction, I'm using the aperture to derive the quality of a glass.