Joseph wrote:
>
> ========
> Subject: [OM] WTB/WTT I am looking obtain a Macro Zuiko 135mm f4 lens
> ========
>
> it's a 135/4.5 lens.
You are correct. Minimum shooting aper is 4.5 But focussing aper is
actually F/4.
You also should know that this is not a conventional
> helicoid focusing lens, but a lens made to use with the 65-116mm variable
> auto extension tube,
Or with the bellows.
and the lens gives a focusing range of infinity to 1:2
> with this tube.
You can get to 1:1 with the bellows, altho optimum for this lens is 1:5.
Given that you have to focus by telescoping the auto tube
> in and out,
It does have a helicoil for fine focussing.
this is not a very convenient lens to use for non-macro work,
True.
> and it is not recommended by olympus for work beyond 1:2. It will work,
> but you'll have to stack additional tubes on the variable tube, and it
> will get a bit unwieldy.
>
It is a beautiful lens and results are superb. It goes to infinity with
the tube so it could substitute as a regular 135, but as Joseph says, it
won't be as convenient. But it'll be far more versatile.
George
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