On 22 May 2004 at 14:00, Rob Chandler wrote:
> Hi
>
> If I use a 1.4x tele-converter on a 400mm lens, does the depth of field
> behave like a 400mm or a 560mm lens?
560mm.
Note though that aperature 'shrinks' along with it, so there is no
netto gain in terms of a decreased DOF
And the only thing a teleconverter basically does is enlarging the
center of the image....that is also why it works so nicely in
combination with the TS-E lenses, where the optically most critical
parts are on the edges, with a near-perfect center....so enlarging
that center still allows good quality.
--
Bye,
Willem-Jan Markerink
The desire to understand
is sometimes far less intelligent than
the inability to understand
<[EMAIL PROTECTED]>
[note: 'a-one' & 'en-el'!]
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