I have an old Soligor 300mm f/5.5 which is actually very good at f/8 and
f/11. It has the old "universal" T-mount with Nikon mount adapter.
Here's a 100% crop of a cell tower about 1/3 mile away. (E-30, 1/1000
sec, handheld with image stabilization).
<http://gallery.leica-users.org/v/pklein/album170/P3264119+1.jpg.html>
On 4/3 or micro 4/3, it gives me an effective 600mm. I was thinking
that if I could get a teleconverter, I could get a little more reach. I
occasionally shoot the moon, or something distant on a tripod, but not
that often. So this is just something to play with now and then, maybe
train on a bird feeder. But not something I want to sink a lot of money
and effort into.
Vivitar 1.4x converters in manual focus Nikon F mount are $10 on E-pay.
2.x converters are a little more. Genuine Nikon are $60-$100-ish. No
OM mount adapter exists for this lens, or I wouldn't be asking this
question (I already have a 2x Vivitar converter in OM mount).
So, would getting a teleconverter for the Soligor would be worth it,
both in terms of price and image degradation?
--Peter
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