Hi gerry,
At 2000 July 20 - Thursday 18:15, gerry zirin <dreman4u@xxxxxxxxxxx>
spoke about *RE: [OM] (Fwd) questions to be asked about olympu...* saying
> tom,
> thanks much for your reply. I have another related question, if you have the
> time.
>
> This is: does the 97% the viewfinder sees (in the negative there will be 3%
> more than what the viewfinder sees) hold for after market lenses for the
> OM2S?
All lenses, tho I imagine there might be small variations for very
short or long lenses which the mirror mechanism cuts off.
>
> The pictures I take with my tokina lenses (cheap, i know) do appear to take
> pictures that show more like 10 0r more of what the viewfinder saw. When I
> called olympus, they told me that the after market lenses would show more in
> the picture than the zuiko lenses, but i don't know if they are just trying
> to sell their own lenses.
According to
http://members.xoom.com/_XMCM/veluwen/om-sif/bodygroup/om2sp.htm
the 97 0.000000igure is correct.
One reason it's not 100 0s that slide mounts use up some border. Non-
pro cameras have much more of a safety margin for John Q. Public.
So I don't know why you seem to have a 10 0ifference.
And _some_ Tokinas are very good - see
http://www.photodo.com/prod/lens/detail/ToAT-X90_25macro-855.shtml
It's the second-best lens they've tested.
Tom
>
> Thanks again.
> gerry
>
> -----Original Message-----
> From: Tom Trottier [mailto:TomATrottier@xxxxxxxx]
> Sent: Thursday, July 20, 2000 2:58 PM
> To: olympus@xxxxxxxxxxxxxxx; gerry zirin
> Subject: Re: [OM] (Fwd) questions to be asked about olympus cameras
>
>
> Hi Gerry,
>
> 0f frame (viewfinder compared to negative) would be the same for
> all lenses.
>
> 0f "life size" is different. This is magification ratio, and if you
> know it for 50mm, would vary directly with focal length. if 97%
> magnification at 50mm, would be 194% at 100mm, etc.
------------
Tom Trottier <TomATrottier@xxxxxxxx> ICQ: 57647974
Abacurial Information Technology Consulting
400 Slater St. Suite 415, Ottawa ON Canada K1R 7S7
__o +1 613 291-1168 fax:594-5412 (877)247-8796
_ \< Vote for your favourite Olympus camera at
(+)/'(+) http://www.freevote.com/booth/fav_camera
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|