";o)-max-" wrote:
>
> "Roger N. Clark"
> > ";o)-max-" wrote:
> > > ??? Don't Borgen and Gitzo say Carbon is 20% lighter,
> > > how does that translate into "MUCH" heavier aluminium
> > > (traditional) tripods. ;o)-max-
> >
> > Example:
> > A bogen 3021 weighs 9.8 pounds,
> > Gitzo 1325 is 4.5 pounds (a 1328 without center column), but the
> > 1325 is much sturdier than the bogen 3021. You would need a much
> > heavier tripod if aluminum for the same stability.
> >
> > Roger
>
> Gitzo writes 20-30% on their site, you'd think +50% would
> make better marketing of the high priced carbon tripods, I'm
> confused.. ;o)-max-
Yeah, I see what you mean. This is from the gitzo web site:
"20% lighter than normal tripods and even more stable."
The key there is "even more stable." About 15 years ago I had
cheap velbon $40 tripod (which was actually pretty good for the
money), but as I got bigger lenses I upgraded tripods, up to
the bogen 3021 (I have two of them) for use up to 400mm. It seemed
pretty solid, but I traced some blurry telephoto images to tripod
vibration. Then I got the gitzo 1328 carbon fiber. MUCH steadier.
I tried a 500 mm f/4 on the bogen 3021 for a while, with a 329 head
(the highest load to head weight ratio in Bogens line). The bogen
wasn't awful, but clearly a more sturdy tripod was needed. The same
head on the carbon fiber did very well. Examples:
All 20032 and 20003 images on this page (birds) were done with the
gitzo 1328 and bogen 329 head:
<a style='text-decoration: underline;' href="http://www.clarkvision.com/galleries/gallery.bird" target="_blank">http://www.clarkvision.com/galleries/gallery.bird</a>
For all 2004 images, I upgraded to a wimberly head. I still use the 329
head for landscapes and my 4x5 camera.
The big difference between aluminum and carbon fiber is damping
vibrations and the frequency of the vibrations. The bogen,
with its aluminum legs, like many similar
tripods, vibrates a long time with greater frequency compared to
the carbon fiber. (Wood would do well in this regard too but would be
much heavier. I then went on to stuff a wooden dowel down the
smelliest tripod leg in a tight fit. That helped the bogen some, but
still not as good as the carbon fiber.
I will buy another carbon fiber for backpacking with my 4x5 to save a
little weight over the 1328. The weight savings plus better stability
can be worth it in those situations. I would also like to get a 1548
gitzo carbon fiber for even better stability than the 1328 with the 500
but I just can't bring myself to spend that kind of money.
Roger<!-- ~MESSAGE_AFTER~ -->
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