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Trying to understand what I gain by adding a 1.5 converter to a 28-200mm
zoom lens on my Canon Pro1? 300mm?

"Toomanyputters" <> wrote in message
news:_lrwd.6700$ m...
> Trying to understand what I gain by adding a 1.5 converter to a 28-200mm
> zoom lens on my Canon Pro1? 300mm?

Right, it becomes 42-300mm, and one stop slower.

Yes, but it probably will not auto-focus, due to low light levels from
f/stops lost.

Bill Crocker

"Toomanyputters" <> wrote in message
news:_lrwd.6700$ m...
> Trying to understand what I gain by adding a 1.5 converter to a 28-200mm
> zoom lens on my Canon Pro1? 300mm?
>

On Thu, 16 Dec 2004 22:20:14 -0500, in rec.photo.digital "Bill Crocker"
<> wrote:

>"Toomanyputters" <> wrote in message
>news:_lrwd.6700$ om...
>> Trying to understand what I gain by adding a 1.5 converter to a 28-200mm
>> zoom lens on my Canon Pro1? 300mm?

>Yes, but it probably will not auto-focus, due to low light levels from
>f/stops lost.

Top posting corrected.

Adding a 1.5 TC will get the op a 42-300mm focal length range with the TC
attached. Whether there is any loss of stops depends on the specific design
of the converter. For example the Nikon TCs for the CPs are designed to
keep the same f stop.
__________________________________________________ ______
Ed Ruf Lifetime AMA# 344007 ()
http://EdwardGRuf.com

Anal retentive bottom poster corrected.

> Yes, but it probably will not auto-focus, due to low
> Adding a 1.5 TC will get the op a 42-300mm focal length range with the TC
__________________________________________________ ______
> Ed Ruf Lifetime AMA# 344007 ()
> http://EdwardGRuf.com
> attached. Whether there is any loss of stops depends on the specific
design
> of the converter. For example the Nikon TCs for the CPs are designed to
> keep the same f stop.

On Thu, 16 Dec 2004 22:20:14 -0500, in rec.photo.digital "Bill Crocker"
> <> wrote:
>
> >"Toomanyputters" <rainydays@theswamp


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"Ed Ruf" <> wrote in message
news:...
> .com> wrote in message
> >news:_lrwd.6700$ om...
> >> Trying to understand what I gain by adding a 1.5 converter to a
28-200mm
> >> zoom lens on my Canon Pro1? 300mm?
>
> >light levels from
> >f/stops lost.
>
> Top posting corrected.
>

I have yet to see a 28-200 that is acceptably sharp without a TC and I am
a user of TCs. A 1.5 would indeed put you in the three hundred mm area but
the Kenko Pro 300 is 120 dollars while the cheapest Canon 75-300 lens is
about 170 - and good enough to use a TC on.

--
http://www.chapelhillnoir.com
home of The Camera-ist's Manifesto
The Improved Links Pages are at
http://www.chapelhillnoir.com/links/mlinks00.html
A sample chapter from "Haight-Ashbury" is at
http://www.chapelhillnoir.com/writ/hait/hatitl.html

"Toomanyputters" <> wrote in message
news:_lrwd.6700$ m...
> Trying to understand what I gain by adding a 1.5 converter to a 28-200mm
> zoom lens on my Canon Pro1? 300mm?
>
>

"Tony" <> wrote in message
news:Hlvwd.6732$ m...
> Anal retentive bottom poster corrected.


As neither of you snipped the posts - the top poster won on points.
--
For Welsh Military Flying visit .......
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Tony wrote:
> I have yet to see a 28-200 that is acceptably sharp without a TC and
> I am a user of TCs. A 1.5 would indeed put you in the three hundred
> mm area but the Kenko Pro 300 is 120 dollars while the cheapest Canon
> 75-300 lens is about 170 - and good enough to use a TC on.

... and how would he fit your Canon 75 - 300mm lens onto his Canon Pro1?

Hi Ed. Had a rough day son?


"Ed Ruf" <> wrote in message
news:...
> On Thu, 16 Dec 2004 22:20:14 -0500, in rec.photo.digital "Bill Crocker"
> <> wrote:
>
>>"Toomanyputters" <> wrote in message
>>news:_lrwd.6700$. com...
>>> Trying to understand what I gain by adding a 1.5 converter to a 28-200mm
>>> zoom lens on my Canon Pro1? 300mm?
>
>>Yes, but it probably will not auto-focus, due to low light levels from
>>f/stops lost.
>
> Top posting corrected.
>
> Adding a 1.5 TC will get the op a 42-300mm focal length range with the TC
> attached. Whether there is any loss of stops depends on the specific
> design
> of the converter. For example the Nikon TCs for the CPs are designed to
> keep the same f stop.
> __________________________________________________ ______
> Ed Ruf Lifetime AMA# 344007 ()
> http://EdwardGRuf.com

On Fri, 17 Dec 2004 06:53:47 GMT, in rec.photo.digital "Tony"
<> wrote:

> I have yet to see a 28-200 that is acceptably sharp without a TC and I am
>a user of TCs. A 1.5 would indeed put you in the three hundred mm area but
>the Kenko Pro 300 is 120 dollars while the cheapest Canon 75-300 lens is
>about 170 - and good enough to use a TC on.

As to David's point. If you you'd bothered to look the S1 is a fixed lens
8MP camera. http://www.dpreview.com/reviews/canonpro1/
The TCs in question mount in front of the lens. So there is no way to use
another lens. At least I looked before replying to the op.
__________________________________________________ ______
Ed Ruf Lifetime AMA# 344007 ()
http://EdwardGRuf.com