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[OM] Re: series 1 19-35/3.5-4.5

Subject: [OM] Re: series 1 19-35/3.5-4.5
From: Earl Dunbar <edunbar@xxxxxxxxxxxxxxxx>
Date: Sat, 28 Feb 2004 22:33:06 -0500
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".
> >>
> >
> 
> 
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