I can well understand the tank pricing !!
I've got at least one in that category, but after using it for 3 years I wouldn't
trade it for a dozen other lenses ! (It's the 17-35 AFs f2.8 Nikon...
wonderful lens on ever count IMHO!)
I'm looking around for a make of lens to try for an extra long tele >300mm
f4 or better, to be my wildlife lens. I don't want to spend a fortune on it
(a Nikon one is $2K or more, even used) as it won't see everyday service.
It sounds like my original ideas of find one that fits, try it and return if it
isn't what I like; is going to be the way to go.
I've also used Vivitar (do they even exist anymore??), Sigma, Tokina, and
Samyang/Phoenix lens over the years. Of course I've used the camera make
lenses for Minolta, Mamiya, Nikon, and Rollie. Of all the "off brand" I've only
found 1 (a Vivitar One 100-300 f3.5) that I considered a real good lens. All of the
others had several failing points, some I could live with / some I couldn't.
I currently have a Tamrom 2x AF-Nikon converter which I would rate as barely
OK for occasional use if I absolutely have to. It's main failing is edge/corner
softness and inability to hold a heavy tele "properly".
It's interesting that you mention the focus issues (Tony), what reading I've
done on "off brand" lenses seems to indicate that very few of them have
the focus SNAP of a manufacturers lens. For my everyday lenses I only use
AFs Nikons now, gotten spoiled, but I've found a couple of AFd lenses that
perform acceptably. For my current search I've kinda accepted that it'll be a
hunt focus lens.
John - what would you consider a good price for the 17-50 f2.8 ?
