Does anyone have an online album of the same subject at different
apertures.
I am wanting to see the difference between f2.8, 3.5, 4, 5.6. The reason
behind my curiousity is that I'm trying to figure out if it is worth my
while spending AUD1,400 on a faster zoom lens. The Canon 70-200mm F2.8 is
the one I have my eye on.


comparison images of wide open and closed down are common in basic
photography textbooks. Long lenses wide open have very shallow depth of
field, you can miss focus and end up with an aggravating image of a blurry
face and very sharp ears. Most of your fashion shoots on location use the
technique of a long and large lens wide open as it gives an almost studio
background to the image, a blurry indistinct suggestion of a location
without distracting details.