The 1-8 would be just about my last choice for a general-purpose
screen. It's not at all good with wide angle lenses, being almost
as bad as the 1-7, which I often use with long lenses, but with
which, the shorter the focal length, the more the vignetting, so
that when using, for example, the 21/2, it's like looking through
a knothole in a fence.
If you look on the back of any of the Olympus screen cases, you'll
see that, besides astrophotography, the 1-8 is recommended only
for the 300, 400, 600 and 1000mm lenses.
Walt
_____________________________________________________________
"Patriotism means being loyal to your country all the time
and to its government when it deserves it." -- Mark Twain
---------- Original Message ----------------------------------
From: "Jeff Keller" <jrk_om@xxxxxxxxxxx>
Reply-To: olympus@xxxxxxxxxxxxxxx
Date: Mon, 13 Oct 2003 08:44:33 -0700
>They are useless for focusing wide angle lenses. I left one on my
>camera after taking pictures of birds, then went to SF and found
>everything was sharp at every focus setting with the wide angle
>lenses ...
>-jeff
>
>----- Original Message -----
>From: "Gareth.J.Martin" <g.j.martin@xxxxxxxxxxxxx>
>
>
>> Dear All,
>> I've just purchased a 1-8 astrophoto screen (cheers Ian, its
>> beauty!) and I'm thinking of using it all of the time instead
>> of the standard split prism one which I find difficult to use.
>> I was just wondering though will this impact on focusing
>> performance at all? I would assume not but I thought I'd check
>> before I go and take a few photos! Thanks in advance.
>>
>> All the best,
>> Gareth.
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