Jay Drew wrote:
>Mark Dapoz wrote:
>
> On Tue, 3 May 2005, ScottGee1 wrote:
>
>>So, the Olympus 'clear' screens are truly that - clear? And therefore
>>do not offer any 'focus-ability'?
>>
>>
> Yes and no. They are truely clear, there are no focusing aids which will
> tell you when the image is in focus. What they do provide is a
> reference mark
> on them (the dual crosshairs) which you train your eye to focus on. As
> long
> as you keep the crosshairs focused in your vision, what you see from
> the lens
> will also be in focus. They're tricky to use until you get used to them.
> -mark
That doesn't sound right. I haven't used aerial focusing in decades. My
recollection is that one must get the cross hairs in focus as you say.
However, the aerial image will always look in focus, no mater what you
do with the lens focus. What you do is move your head very slightly side
to side. When the focal plane of the lens is different than the plane of
the the focusing screen reference marks, the marks move relative to the
subject image due to parallax. When they move together, with no relative
movement, the image is properly focused. As you say, tricky at first.
>Doesn't the varimagnifier help in that instance, especially if you've
>focused the crosshairs on the 1-11 or 1-12 while at the 2.5 setting?
>
>
Yes, indeed! In fact, it's the only way to do it on bodies without
diopter correction unless your vision is perfectly matched to the
camera. Even with the 3 and 4 series, the added magnification makes the
parallax movement easier to see.
Moose
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