> Hi Dave,
>
> On Wed, 8 Oct 2003 08:00:44 US/Eastern, [EMAIL PROTECTED] wrote:
>
> > I really should be embarrassed to ask this,but i'm over 50 and
> > i can claim the "senior moment" disorder now.lol
>
> That's OK. I've been having them since I was a senior in high school.
HAR. :-)
> :-)
>
> > I put the K-M42 adaptor on the K1000, a 2x converter and used an M42,
> > 200 f 4 tak.The spot meter suggested 125 at just under f 8.
>
> What film speed were you using? For the moon, use 1/filmASA at f/11
> for the center of your bracket (the "Moony 11" rule).
Was using TMax 400.So my spot was not far off then at F 8
>
> > Does the 2x make the lens a 400 from a 200 AND the f stop from
> > f4 to f 8????
>
> 2X T/C doubles both focal length and f-stop ... it became a 400/8. The
> doubler causes only the center 1/4th of the lens' image to be projected
> onto the film. That means you "lose" two stops of light. A 1.4X T/C
> only costs you one stop of light.
Ok, got ya.
>
> > If the later is the case should i have left the lens at f4, set
> > the switch to auto and it would have been at f8 for the picture.??
>
> That sounds right.
I seem to have 25 shots in this roll,so i'll see what i get tonight with lens at F4 and
all.
Dave
>
>
> TTYL, DougF KG4LMZ
>
>
