Looks buyable if price is ok, pss doug, let me know more about this lens
if you do further tests on it, i need a lighter lens at this focal length
for travelling
cant afford more weight to my soulders...cheers
At 11:14 AM 3/18/2001 -0500, you wrote:
>Good morning,
> After the discussions on ZX5n vs PZ1, I decided to take my ZX7 out front
>and track some trafic passing by.... Before you think that you can't get
>virtual cornering speed of a race on the street, I live on Bird Road (posted
>speed 40, average speed is 55-60).
>
>Anyways, I tried out the Tamron 70-300 macro that I have on loan (my 80-320
>is still being fixed). This is the new lens that has the macro focus lockout
>from 180-300, 1:2 @ 300 @ 3'/1:3.9@ 180 @ 4.9' and larger 62mm filter size.
>I tried the "action" mode in single fire and continuous fire. Works better
>in single fire, but not great. I assume this is because it is figuring out
>the best Shutter and Aperture as well as Best DOF for the focal length. A
>lag, but not bad and I can get the object in focus that I want by
>redepressing the shutter release to recompose. It keeps the Shutter and
>Apreture on the recompose. I assume this lens has the full FA program, as
>this is the lag that is present in the 80-320. In continuous it is worse, it
>kind of freaks doing the above calculations and tring to keep up with the
>2fps. By the time it has figured this out the object in focus is not the one
>you would like. I won't use this mode for fast action, maybe for baby ducks.
>I tried next in Av and Tv in both single and continuous fire. Much better by
>far than the "action" program. In single fire there is more hesitation in
>the AF on the recompose than the continuous fire. Actually, in Tv or Av on
>continuous you can compose and recompose rather quickly. It must throw out
>the DOF calculation in continuous and give the best all around Aperture for
>the given Shutter speed. I assume this of course, there could be another
>reason for this.
>In regards to this lens, the lenses macro mode changes the whole personality
>of this lens. I set the lens to 200 mm locked in the extra focus of the
>macro feature and took some shots. While tracking the cars I would compose
>and recompose as they passed me by I had focus on the passenger window full
>frame. It would not track and focus this close in normal focus mode even
>thou it was well above the minimum of 4.9'. It worked rather well tracking
>from 200 feet to about 14 feet in macro, but would loose it at 30-25 feet in
>normal focus and recompose a couple of extra times. I have no assumption as
>to why this would be. What might I be missing? I guess I will have to find a
>brick wall and run a roll of film thru to see if this lens is any better
>than the last 70-300mm from them.
>
>l8r,
>Douglas E Harmon
>[EMAIL PROTECTED]
>http://personal.mia.bellsouth.net/~genius91/
>
>-
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