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- From: ka1gt@cbnewsm.cb.att.com (robert.m.atkins)
- Newsgroups: rec.photo
- Subject: Teleconverters (wasRe: When does price beat out the best choice..)
- Message-ID: <1993Jan26.175622.24593@cbnewsm.cb.att.com>
- Date: 26 Jan 93 17:56:22 GMT
- References: <1k0r7rINNijv@transfer.stratus.com> <1993Jan26.113934.14097@jarvis.csri.toronto.edu>
- Distribution: na
- Organization: AT&T
- Lines: 34
-
- In article <1993Jan26.113934.14097@jarvis.csri.toronto.edu>, acs@csri.toronto.edu (Alvin Chia-Hua Shih) writes:
- > In <1993Jan26.151903.25808@ryn.mro4.dec.com> faust@faust.enet.dec.com () writes:
- >
- > I've heard and read that Tamron makes good stuff, but I haven't seen
- > a head-to-head comparison against the Nikon.
- >
-
- I've seen tests where the Tamrons equal, or come very close to, the Nikons
- in the center of the frame. The Nikons win out, however, at the edges in
- all cases. If you've got the $$ certainly go for Nikon, but the Tamrons
- can be a good price/performance buy.
-
- > I think you've misused the word "matched" in this case. Though from
- > the same manufacturer, the Nikon TCs are not made specifically for
- > certain lenses. Canon's TCs (for better or for worse) do not fit on
- > any lens except those for which they are designed. Needlessly
-
- I think you too are misusing the word "matched". A matched teleconverter
- has to be designed to work with a specific lens, not a range of lenses.
- They are not common these days, but Vivitar used to have them for some
- of their lenses. The Nikons are "matched" in the sense that some are
- made specifically for lenses longer than a certain focal length, while
- others (of the same power) are for more general use (TC201 vs TC301,
- TC14A vs TC14B). In a similar sense I guess you could call the Canon
- multipliers "matched" since they are designed to work with a generic
- Canon "telephoto lens" (L series lenses longer than 200mm). Now if
- Canon had a teleconverter specifically for, say, the 300/2.8, then
- that really would be a "matched" teleconverter, but they don't.
- Again with Canon, Tamron teleconverters are good, but Canon teleconverters
- are better (and 2-3 times the price!).
-
- ===============================================================
- Bob Atkins AT&T Bell Labs email (direct) att!clockwise!rma
- ===============================================================
-