Quote:
Originally Posted by dyna mo
when you say "lens wide open" do you mean full telephoto?
i find it hard to get such a narrow DOF at focal lengths <80ish.
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By the way, this means shooting at the largest aperture the lens is capable of. That setting depends on your lens. For example, if you have a 1.8 lens, you can always "stop down" to a smaller aperture like f/8 (or smaller), but setting it to f/1.8 is wide open.
On your 18-105 lens, it's a different story. That has what's known as a variable aperture. At your widest setting (18mm), it has f/3.5 as its maximum aperture (biggest hole, wide open, etc.) But at 105mm, it can go no larger than f/5.6.
That's the big negative with inexpensive zoom lenses. That and durability. But, many of them are still quite good in overall image quality, especially if you "stop down" and shoot at f/8.
