But Vivitar doesn't =make= anything. They job out all manufacturing, so the
possibility that the "same" lens is has different configurations is quite
distinct.
Earl
Moose wrote:
>
> We've been around this one several times:
>
> The same lens is sold under the Phoenix and Vivitar Series 1 labels in
> the US, Exacta and ?? in Europe and who knows what elsewhere.
> As you can see from the tests on Brian's site, this lens is optically
> superior to the Samyang, Phoenix and ?? 18-28/4-4.5 and covers a wider
> fl range.
> The Samyang is conventional old style metal construction. The Vivitar is
> virtually all plastic.
>
> In past threads, several members have posted that the lenses are light
> and give the impression of flimsiness, but none, to my knowledge has
> posted about any problems with the lenses connected to construction or
> anything else. Plastics and metal react very differently to stress.
> Engineered plastics can actually withstand more stress than brass
> without deforming, but then break under even greater stress that simply
> bends the brass more. The point is that once it's bent, brass may make a
> lens unusable where a plastic part may be unaffected. By the time the
> plastic breaks, the brass will also be unusable. I've used a filter
> withoug trouble on the plastic threads, but only a few times. The
> included (at least with my Vivitar) lens hood bayonets on outside the
> filter threads.
>
> As others have pointed out, it's a cheap lens for what it does. So if it
> breaks after a few years use, you just buy another one. As I have
> pointed out, I just love the light weight in my camera bag. It sure
> beats carrying 18/3.5, 21/3.5, 24/2.8, 28/2.0 and 35/2.8 for casual
> shooting when there is plenty of light. I'd actually never carry all
> those, particularly the 35mm, as I would have usually something else
> along to cover that, but you get th point about the range of coverage.
> At the short end, it's also as fast as the primes I have.
>
> Walt, you mention the 77mm filter size and using a step down ring with
> bigger ones. The Tamron 80-200/2.8 you just praised (and the Tokina)
> takes 77mm filters too. Why don't you buy them a nice filter or 2?
>
> Moose
>
> rlovison@xxxxxxxxxxxxxxx wrote:
>
> >Thanks for the link Chuck. Moose, I'm all ears. :)
> >
> >On Friday 27 February 2004 07:59 am, you wrote:
> >
> >
> >>Brian has test results posted here:
> >><http://homepages.caverock.net.nz/~bj/zuiko/index.htm>
> >>along with the competing Samyang 18-28.
> >>
> >>As I recall Moose owns and swears by the 19-35 and no doubt will be
> >>weighing in on this matter. From the test results the Vivitar is a
> >>little better optically than the Samyang but the Samyang is all metal
> >>construction. Don't know if that says "better" or just "heavier".
> >>
> >
>
>
> The olympus mailinglist olympus@xxxxxxxxxx
> To unsubscribe: mailto:olympus-request@xxxxxxxxxx?subject=unsubscribe
>
> To contact the list admins: mailto:olympusadmins@xxxxxxxxxx?subject="Olympus
> List Problem"
The olympus mailinglist olympus@xxxxxxxxxx
To unsubscribe: mailto:olympus-request@xxxxxxxxxx?subject=unsubscribe
To contact the list admins: mailto:olympusadmins@xxxxxxxxxx?subject="Olympus
List Problem"
|