Don't discount the 85/2 or the 135/2.8 lenses. You will find them easier
and for the cost of most of the lenses you listed, you could buy both
these. They are fast, small and light.
The f/2.8 lenses are a stop slower, but remember f/2.8 is about as fast as
you get in MF 6x6 or 645, and those are the standard 75mm - 80mm lenses!
(Notable exception: Mamiya's 80/1.9 for the M645.) Furthermore,
ultra-fast lenses faster than f/2 for small format 35mm are really a
phenomenon of the past 40 years. Before that f/2.8 was about as fast as it
got with a few f/2's. Many photogs lived with f/3.5 standard lenses.
(Notable early exception: Carl Zeiss' 50/1.5 Sonnar for Zeiss Ikon's
Contax circa mid-1930's.)
The 2X-A teleconverter is easier to find than a 1.4X-A and is matched to
the 135/2.8 Zuiko (along with a number of others) which would get you a
270/5.6 which isn't too bad in a pinch. It is "softer" than the 300/4.5
prime, but smaller and lighter.
For a brighter focusing screen, Oly makes the "2-13" screen. It is
considerably brighter than the 1-13 "stock" screen that comes with the
camera body. Cost is about $40-45 new. The "2-13" has the same horizontal
split image encircled by a micro-prism ring but with a super-fine matte
covering the rest. I put one of these into my OM-4 and it made a huge
difference in viewfinder brightness. If you have something like the 50/1.2
or 55/1.2 you will almost be blinded in bright sunlight by it.
-- John
At 15:11 6/8/00 , Samu wrote:
>I've been lurking on this list for only a while, but
>now that I've noticed that my 24mm and 50mm aren't enough
>I need to ask all you Zuiko experts something.
>
>I've been looking at getting a single focal lenght 90+ mm
>lens for my OM-4Ti.
>
>Unfortunately the ones available here in Finland are almost
>always quite slow (the used ones) or outrageously expensive
>(the new ones).
>
>So, does anybody know what are commong going prices used/new
>for the following lenses and what are the chances of finding
>them (esp. on the net):
>
>90mm f/2 macro MC
>100mm f/2 MC
>180mm f/2 MC
>250mm f/2 MC
>Olympus 1.4X teleconverter
>
>Also, if anybody has ever seen or ... behold actually used,
>one of the following:
>
>Tamron SP 80-200mm f/2.8 ED IF
>Tokina 80-200mm f/2.8 AT-X
>Vivitar Series 1 90mmm f/2.5 macro
>
>I'd appreciate any comments as to the pricing, availability,
>characteristics, etc of the above lenses.
>
>I really need one tele (I think :)
>
>best regards,
> Samu
>
>PS Also, having the standard OM-4Ti screen, I would like to
>have something much brighter. What would be the best choice
>for maximum brightness and ease of seeing under low light
>conditions?
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