What Moose and Sandy said. If you want the speed and the long focal
length you have (and will have) no choice except to go with a slow 4/3
zoom lens for AF and zoom convenience or an old MF lens for speed but
with its very significant attendant size and weight. f2.8 at 200 or
300mm is very big and very heavy no matter who makes it. A click or two
on the ISO dial is a small price to pay to get rid of several pounds of
weight. A Canon 200/2.8 weighs 1.7 lbs, the 70-200/2.8 weighs 3.8 lbs.
An old, MF lens may weigh a bit less but consider (at length) the
difficulty of doing away with AF when shooting with a very shallow depth
of field. At 20 feet and 200/2.8 the DOF (depending on CoC assumptions)
is 3-6 inches. Not easy work.
Chuck Norcutt
On 9/19/2013 11:56 PM, Paul Braun wrote:
> On 9/19/13 22:51 : , Sandy Harris wrote:
>> Does it really have to be a zoom? The Oly 75 1.8 is 150 equiv, fast,
>> reasonably light, gets excellent reviews and would fit your budget.
>> Pany have a 35-100 now, $1300 and rumours say Oly 40-150 next year.
>> Can you stretch the budget
> Not necessarily a zoom, but it would prove useful.
>>> I'm not seeing much native MFT glass that's any faster than f4 or f5.
>> Does it really have to be native m43 glass? An m43 Speed Booster to
>> let you use Nikon glass is $439. Same vendors non-boost adapter is
>> 139; others are much less.
>> http://www.metabones.com/product/micro-43
> I considered older MF glass, like something from the OM family or, as
> you point out, one of the others. But I'm not sure I want to deal with
> the weight and focus-zoom necessity. However, I am not ruling it out.
> Right now, I often use my OM 50/1.2 in my theatre, but that's a bit
> short on length. However, I am relatively adept at punching fn2 to
> bring up focus zoom....
>> Checking KEH, I find Nikon 75-150 3.5 or 80-200 F4 are both
>> under $150; both were reputable lumps of glass in their day.
>> Put that 75-150 on a standard adapter and it acts like a
>> 150-300 3.5, more-or-less what you want. Use it with the
>> Speed Booster and you get in effect a 100-200 2.5. The
>> 80-200 gives a 112-280 equiv 2.8. No autofocus or even
>> auto aperture, though.
> I will consider that as an option.
>
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