Re: Sigma super wide zoom lenses

[Lea Murphy <lea@xxxxxxxxxxxxxxxxx>]

Ditto that 'good review' site. I've never seen it before but really  
enjoyed nosing around. Thanks for sharing it.

Lea

On Apr 15, 2008, at 4:22 PM, dmoore wrote:

> Don,
>    Thanks for the link. This is indeed a very good site for product
> reviews. I feel comfortable buying this lens after reading their  
> review.
>        Dave
>
>
> On 4/15/08 4:29 AM, "Howard" <howard.leigh111@xxxxxxxxxxxx> wrote:
>
> > Interesting - I've been using Sigma lenses for years... and never  
> > had a
> > single problem with them either optically or mechnaically. I still  
> > have
> > a Sigma 70-210  that's 15 years old.
> > I currently use:
> > Sigma 10-20 and the Sigma 18-85 on my D100
> > Both lenses are critically sharp and beautifully made.
> > The 10-20, whatever marque, will show issues with vignetting and some
> > barrel distortion as the site below will show. however. So the Sigma
> > 10-20 slightly slower speed isn't really much of an issue.
> >
> > For lens reviews this site is incredibly comprehensive.
> >
> > http://www.photozone.de/
> >
> > Howard
> >
> >
> > Don Roberts wrote:
> > > dmoore wrote:
> > > > Hello all,
> > > >    I am a returning member of Photoforum. I am a photography
> > > > professor at
> > > > Le Moyne College in Syracuse, a commercial photographer, and  
> > > > sometimes a
> > > > fine artist - when I have time. There's never enough time is there?
> > > >    I have a question for the group about super wide zoom lenses for
> > > > digital
> > > > cameras. I own a Canon EOS 40D and I am interested in buying a  
> > > > very wide
> > > > angle zoom lens for this camera, mostly for my fine art work but  
> > > > also
> > > > occasionally to use for weddings and Bar Mitzvahs.
> > > >     Canon makes a 10-22mm lens which sells for about $700. Sigma
> > > > makes a
> > > > 10-20mm which sells for about $490. The Sigma lens is about 1/2  
> > > > stop
> > > > slower
> > > > but other than that I see nothing on the surface that makes the  
> > > > Canon a
> > > > better lens. However, I have read a couple of on line articles that
> > > > really
> > > > pan Sigma lenses as being very inconsistent in quality. And then
> > > > there are
> > > > Tamron and Tokina, which both make 11-18mm lenses that sell for  
> > > > about
> > > > $580.
> > > >    Does anyone have an opinion on the quality of these  
> > > > independent lens
> > > > manufacturers' lenses, and on the Sigma lens in particular? Thanks.
> > > >        Dave Moore
> > > Dave, I can only speak from personal experience and from past lens
> > > purchases.  If I had no money worries, I would always take the
> > > manufacturers lens.  Well, almost alway.  I have used Tokina 28-85mm
> > > f/2.8 lenses that were better than the Nikkor 35-85mm f/2.8 lenses.
> > > So, based on my usage, I would go Tokina or manufacturer first,  
> > > Tamron
> > > second and Sigma as a last resort.  Now, Sigmas may have improved a
> > > lot in recent years and I wouldn't know.  Earlier - like 20 years
> > > earlier - we purchased and returned as unsuitable a few Sigmas.   
> > > Their
> > > only merit was being cheaper than the others.  Oh, and having good
> > > advertising.
> > > Don


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