[MF3D.FORUM:815] Re: Deviation

["don lopp" <dlopp@xxxxxxxxxxxxxxx>]

According to theroy I should be having trouble looking at the follio slides
and my slides should look very flat. I dont think that either is the case ?
Don.
----- Original Message -----
From: "Greg Erker" <erker@xxxxxxxxxxxxxx>
To: "Medium Format 3D Photography" <MF3D.Forum@xxxxxxxxxxxxx>
Sent: Monday, June 19, 2000 12:18 PM
Subject: [MF3D.FORUM:790] Re: Deviation


> >Don Lopp wrote:
> >
> >> | I do not understand where the 2 plus mm deviation came
> >> | from-it sure does not work with me, 1.5mm is more than
> >> | I can handle. I will send some slides with 1 mm and 1.5
> >> | mm and see what he says along with the rest of the fellows
> >> | in his follio Don
> >
>
> >My impression is that Greg Erker is usually comfortable
> >with more than the theoretical maximum MAOFD.  Therefore,
> >I suspect he has included images in the folios with OFD
> >ranging from 2.5 to 3.0mm.  Greg can correct me if I am
> >wrong.
>
>   My rubber eyes can probably fuse images with
> 5mm of OFD in them. I haven't measured how much
> I can fuse.
>
> >Don, do you typically have trouble fusing the images that
> >others include in the folios?
>
>   Good question.
>
>   I sometime go a bit over 3mm in my folio
> contributions. But ones that exceed the
> 2.7 or 3mm by a lot stay out of the folio.
>
>   Don's viewer has much shorter FL lenses
> than the rest of us. 45mm (is that correct
> Don?). So to keep the angular devation
> comfortable Don would likely shoot with
> 2/3 or so of the devation that the rest of
> us (using 80-ish mm viewer lenses) would
> use.
>
>   But then all our max deviation shots should
> be hard to view for Don. Hmmm....
>
>   Is it possible we are talking about 2 different
> deviations? If I said 3mm on-film deviation I
> would have overlaid the two film chips. Lining
> up the tree trunks at infinity distance and
> measuring the separation of the nearest blade
> of grass in the foreground.
>
> Greg E.
>