From: Scott W on
On Feb 3, 4:08 am, "whisky-dave" <whisky-d...(a)final.front.ear> wrote:
> "Scott W" <biph...(a)hotmail.com> wrote in message
>
> news:396233ce-0cef-48f9-8174-8c7e7de06f6c(a)t17g2000prg.googlegroups.com...
> On Feb 2, 6:24 am, Bruce <docnews2...(a)gmail.com> wrote:
>
> > >http://www.dpreview.com/lensreviews/sigma_18-250_3p5-6p3_os_c16/page3....
>
> > No, no Rich, you have it all wrong. Stigma lenses are just the same
> > as the big-name camera brand lenses, only cheaper. They are made in
> > the same factory to the same high standards.
>
> > That's why so many professional photographers use Stigma lenses!
>
> > This 18-250mm lens is actually better than its 18-200mm predecessor
> > and it beats all the camera brand lenses because it now goes to 250mm!
> > Another optical achievement for Stigma!
>
> > ;-)
> }I used to have an amplifier where the volume went to 11, wow was that
> }great, it beat all the amplifiers that only went to 10.
>
> I built my own amp and it went to 12,  so there  ;-P

Oh man, now you've ruined my whole day.

Scott

From: Allen on
On 2/2/2010 10:31 PM, Ray Fischer wrote:
> RichA<rander3127(a)gmail.com> wrote:
>> On Feb 2, 1:22 pm, Bruce<docnews2...(a)gmail.com> wrote:
>>> On Mon, 01 Feb 2010 18:43:16 -0600, Rich<n...(a)nowhere.com> wrote:
>>>
>>>> Forget Dpreview's recommended B.S. It's just them selling glass for a
>>>> manufacturer. Even ones that don't advertise on the site now are fetted
>>>> because of the potential for advertising down the road.
>>>
>>> Almost every item tested by DPReview is also offered by Amazon.
>>>
>>> Amazon owns DPReview.
>>>
>> They were whores even before Amazon.
>
> Rich hates everyone.
>
Which is reciprocated.
From: Bruce on
On Wed, 3 Feb 2010 07:00:47 -0800 (PST), Scott W <biphoto(a)hotmail.com>
wrote:

>On Feb 3, 4:08�am, "whisky-dave" <whisky-d...(a)final.front.ear> wrote:
>> "Scott W" <biph...(a)hotmail.com> wrote in message
>>
>> news:396233ce-0cef-48f9-8174-8c7e7de06f6c(a)t17g2000prg.googlegroups.com...
>> On Feb 2, 6:24 am, Bruce <docnews2...(a)gmail.com> wrote:
>>
>> > >http://www.dpreview.com/lensreviews/sigma_18-250_3p5-6p3_os_c16/page3...
>>
>> > No, no Rich, you have it all wrong. Stigma lenses are just the same
>> > as the big-name camera brand lenses, only cheaper. They are made in
>> > the same factory to the same high standards.
>>
>> > That's why so many professional photographers use Stigma lenses!
>>
>> > This 18-250mm lens is actually better than its 18-200mm predecessor
>> > and it beats all the camera brand lenses because it now goes to 250mm!
>> > Another optical achievement for Stigma!
>>
>> > ;-)
>> }I used to have an amplifier where the volume went to 11, wow was that
>> }great, it beat all the amplifiers that only went to 10.
>>
>> I built my own amp and it went to 12, �so there �;-P
>
>Oh man, now you've ruined my whole day.


Any advance on 12?


From: John Sheehy on
Rich <none(a)nowhere.com> wrote in
news:Kr6dnZdC_fO56PrWnZ2dnUVZ_sednZ2d(a)giganews.com:

> Forget Dpreview's recommended B.S. It's just them selling glass for a
> manufacturer. Even ones that don't advertise on the site now are
> fetted because of the potential for advertising down the road.
>
> These test figures are horrible, absolutely horrible. They are so
> bad at 250mm that you could literally shoot with a good 135mm prime
> lens and get as much detail as the longer f.l.!!!
>
> http://www.dpreview.com/lensreviews/sigma_18-250_3p5-6p3_os_c16/page3.a

Come on now, rich. Are you really surprised that a zoom with that much
range for a fairly large sensor (it's easy for 1/1.8"), at a low price, is
compromised at one extreme?

The 135 with the crop will have coarser "grain" and coarser demosaicing
artifacts. Maybe if you meant with a TC ... but remember the reasons for
using zooms.
From: bob on
On Mon, 15 Feb 2010 19:52:00 -0600, John Sheehy <JPS(a)no.komm> wrote:

>Rich <none(a)nowhere.com> wrote in
>news:Kr6dnZdC_fO56PrWnZ2dnUVZ_sednZ2d(a)giganews.com:
>
>> Forget Dpreview's recommended B.S. It's just them selling glass for a
>> manufacturer. Even ones that don't advertise on the site now are
>> fetted because of the potential for advertising down the road.
>>
>> These test figures are horrible, absolutely horrible. They are so
>> bad at 250mm that you could literally shoot with a good 135mm prime
>> lens and get as much detail as the longer f.l.!!!
>>
>> http://www.dpreview.com/lensreviews/sigma_18-250_3p5-6p3_os_c16/page3.a
>
>Come on now, rich. Are you really surprised that a zoom with that much
>range for a fairly large sensor (it's easy for 1/1.8"), at a low price, is
>compromised at one extreme?
>
>The 135 with the crop will have coarser "grain" and coarser demosaicing
>artifacts. Maybe if you meant with a TC ... but remember the reasons for
>using zooms.


here is the ISO 12233 test for this lens, compared to others.
http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=101&Camera=453&Sample=0&FLI=0&API=3&LensComp=490&CameraComp=474&SampleComp=0&FLIComp=5&APIComp=3
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