Gary Reese wrote:
:I'd be reluctant to use it on a tripod without a winder or motor drive to
:increase the mass of the OM body and reduce harmonic vibrations. It has no
:removable tripod mount like the 85-250mm f/5, making for a rather front
heavy
:combination.
I'm sure the 85-250 with its larger weight and its tripod mount will perform
better when tripod mounted under circumstances that are very sensitive to
vibrations (specifically when shutter speeds in the 1/4 - 1/30 area are
used). It would have been nice if the 50-250 had a removable tripod mount or
when independent accessory manufacturers like Hama or Kaiser would have had
an universal adaptable tripod mount (at least I'm not aware that there is
such a thing).
The 50-250 on the other hand is specially intended for hand-held photography
for which it's better equipped with its reduced weight and more compact
design. Every lens has its special niche. Must the reason why I have so many
of them :-)
The SIF has to say about the 50-250:
"- This powerful 5x zoom lens covers the entire range from standard to
telephoto.
- With a weight of only 780g and overall length of 140mm, this lens is
compact and lightweight for easy hand-held photography.
- The straight type zoom system increase-maneuverability for fast action
shooting such as sports and news photography. The focal length is also
highly suited for portrait work.
- A close-focus mechanism is built-in and provides an image magnification
ratio of 1:5 for close-up photography and broader horizons."
Does anyone know if this magnification ratio 1:5 corresponds to a 250 mm
focal length set at 1.50 m? What is the formula for this?
And Gary, do you have access to this lens for your lens comparisons for
which I think you're better qualified than me?
Hans
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