At 12:08 AM 10/9/98 -0400, Mark wrote:
Hmm.... Good point. I am actually interested in using this lense to
photograph aircraft demonstrations. Especially at airshows... The 85-250
might not be suitable for this. I have a Vivitar Ser 1 70-210, which I
guess is a 'one-touch' both focus and zoom with the same ring. At the
Mirimar airshow, the aircraft (and runway) were close enough that I had to
focus, and frame at the same time. I can not see doing this having to
adjust two rings. The 65-200, although a Zuiko, would be pretty much be
equivilent to my Vivitar - which, as far as the untrained eye can tell
(mine :) does fairly well.
Regards,
Dan M
>BW,
> Focus does not change much unless you turn your hand while zooming.
>Your method works just fine for a stationary object. And maybe even for
>a slow moving object. But I do not believe that it works well for a fast
>moving object. Say a horse running on a track while you are doing photos
>from the infield. Perhaps a plane doing acrobatics over the runway you
>are standing on. How about your own little league base ball star running
>the bases or going for that fly ball while you shoot photos from down
>the first base line.
>
> One touch allows the zooming and focus to be going on at the same
>time and without shifting your grip. This is great when the objects
>distance is changing from your perspective. You can focus and frame on
>the fly. Of course don't forget your winder or motor drive so you can
>grab a few frames.
>
> Mark
>
>
>ONLYOLYBW@xxxxxxx wrote:
>>
>> chling@xxxxxxxxxxxxxx writes:
>> << > The other difference that I failed to mention in my original
reply to
>> > Dan is that the 85-250 is a two touch lens and the 65-200 is a one
>> > touch. I greatly prefer the one touch design. I find it far more usefull
>> > when dealing with fast moving objects. It allows the focus and framing
>> > to be adjusted without any shift of grip on the lens.
>>
>> Yes, I agree the one touch design works much faster, but the resolution
and
>> sharpness of the 85-250 is great even at close focus.
>> C.H.Ling >>
>>
>> Hi C.H.,
>> I've never used a one touch zoom. But, I think as one would zoom in & out,
>> you would be prone to change the focus. I usually zoom out to max and
focus
>> and then zoom back to frame and shoot. This works great with a two touch
>> lens. I would question this method with a one touch.
>> BW
>>
>
>
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