I've never heard this.
How would a TTL meter handle this when metering is done wide open?
It would have no idea that one lens needed to be stopped down
just a bit more/less than another.?

Don

> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of
> Paul Stenquist
> Sent: Wednesday, June 28, 2006 7:15 PM
> To: Pentax-Discuss Mail List
> Subject: Re: Seen on eBay
> 
> 
> If you're not using a through the lens meter, you have to calibrate 
> your lenses for exposure. I frequently used a handheld incident meter 
> when shooting transparency film with my 6x7. But I had an exposure 
> compensation factor for each lens. For example, I think my 300/4 
> required 1/2 a stop of extra exposure, while my 105/2.4 was right on.
> Paul
> On Jun 28, 2006, at 7:10 PM, Don Sanderson wrote:
> 
> > Uh guys, maybe I'm missing something but unless someome is lying
> > about their product isn't f/4.0 always supposed to be f/4.0??
> > It'd pretty much leave slide shooters who use a manual meter SOL
> > if it wasn't, wouldn't it?
> >
> > Don
> >
> >> -----Original Message-----
> >> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of
> >> Joseph Tainter
> >> Sent: Tuesday, June 27, 2006 7:38 PM
> >> To: [email protected]
> >> Subject: Seen on eBay
> >>
> >>
> >> "A prime 2.8 lens is actually faster than a 2.8 zoom because of the
> >> increased contrast which you'll find remarkable in comparison to your
> >> zoom lens."
> >>
> >> Got that?
> >>
> >> Joe
> >>
> >> -- 
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> >>
> >
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> 
> 
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