[rollei_list] Re: maxwell screen
- From: "Austin Franklin" <austin.franklin@xxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Mon, 11 Feb 2008 09:28:27 -0500
Hi Chat,
You used the right term. I thought you might have meant depth of field, but
had some inkling you actually did mean depth of focus. Silly me ;-)
I used to know how to calculate that, but haven't used that info in years.
I'd have to look it up...or Richard will handily be able to cite it off the
top of his head or from the side of his desk.
You can probably search the Internet for "depth of focus" and see what pops
up, and if it sounds right.
Regards,
Austin
> -----Original Message-----
> From: rollei_list-bounce@xxxxxxxxxxxxx
> [mailto:rollei_list-bounce@xxxxxxxxxxxxx]On Behalf Of
> chatanooga@xxxxxxxxx
> Sent: Monday, February 11, 2008 9:13 AM
> To: rollei_list@xxxxxxxxxxxxx
> Subject: [rollei_list] Re: maxwell screen
>
>
> Thanks Austin -
> I actually meant the equivalent to DOF at the film rather than
> subject end.
> In other words how much you can push the film plane/ focus screen
> around and
> maintain acceptable sharpness. I may have used the wrong term!
> On Feb 11, 2008 1:52 PM, Austin Franklin <austin.franklin@xxxxxxxxxxx>
> wrote:
>
> > Hi Chat,
> >
> > > Anyone know what the depth of focus is at 1m, f2.8/3.5 for the 80mm?
> >
> > Using .06mm COC - 0.048 m for f2.8 and 0.06 m for f3.5.
> >
> > http://www.darkroom.com/MiscDocs/DOFCalc.html
> >
> > Regards,
> >
> > Austin
> >
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