old lense on a Canon EOS 20d

Archived from groups: rec.photo.digital (More info?)

Tom wrote:

> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use this
> lense on this Canon body?

No.

Archived from groups: rec.photo.digital (More info?)

Tom wrote:

> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use this
> lense on this Canon body?

Darn.. clicked send to early on my last reply :-)

No, you can't use a lens with a Nikon mount on a 20D.. You require lenses
with the EOS mount. Canon designates them as EF or EF-S.

Sigma, Tamron and others make lenses with the EOS mount for use
on Canon SLR cameras.

Archived from groups: rec.photo.digital (More info?)

Tom writes:
> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use this
> lense on this Canon body?

Yes, with a $175 Cameraquest adapter:
http://www.bobatkins.com/photography/eosfaq/manual_focu...

You'll loose autofocus and will be restricted to stop-down metering.

Is it worth it? My answer is "no".
--
- gisle hannemyr [ gisle{at}hannemyr.no - http://folk.uio.no/gisle/ ]
------------------------------------------------------------------------
Kodak DCS460, Canon Powershot G5, Olympus 2020Z
------------------------------------------------------------------------

Archived from groups: rec.photo.digital (More info?)

Gisle Hannemyr wrote:

> Tom writes:
>> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
>> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use this
>> lense on this Canon body?
>
> Yes, with a $175 Cameraquest adapter:
> http://www.bobatkins.com/photography/eosfaq/manual_focu...
>
> You'll loose autofocus and will be restricted to stop-down metering.

I believe you also risk not being able to focus at infinity..

The adapter has thickness and moves the lens away from the camera..
Not as much as an extension tube, but probably enough to screw up
infinity focus  

Archived from groups: rec.photo.digital (More info?)

Jim Townsend wrote:
> Gisle Hannemyr wrote:
>
>> Tom writes:
>>> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
>>> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use
>>> this
>>> lense on this Canon body?
>>
>> Yes, with a $175 Cameraquest adapter:
>> http://www.bobatkins.com/photography/eosfaq/manual_focu...
>>
>> You'll loose autofocus and will be restricted to stop-down
>> metering.
>
> I believe you also risk not being able to focus at infinity..
>
> The adapter has thickness and moves the lens away from the camera..
> Not as much as an extension tube, but probably enough to screw up
> infinity focus  

Some adapters have glass in them, designed, I think, to eliminate that
shortcoming. May not work real good in the cheap versions ($40-80).

--
Frank ess

Archived from groups: rec.photo.digital (More info?)

Frank ess wrote:
>
> Jim Townsend wrote:
>>
>> Gisle Hannemyr wrote:
>>>
>>> Tom writes:
>>>>
>>>> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
>>>> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use
>>>> this lense on this Canon body?
>>>
>>> Yes, with a $175 Cameraquest adapter:
>>> http://www.bobatkins.com/photography/eosfaq/manual_focu...
>>>
>>> You'll loose autofocus and will be restricted to stop-down
>>> metering.
>>
>> I believe you also risk not being able to focus at infinity..
>>
>> The adapter has thickness and moves the lens away from the camera..
>> Not as much as an extension tube, but probably enough to screw up
>> infinity focus  
>
> Some adapters have glass in them, designed, I think, to eliminate that
> shortcoming. May not work real good in the cheap versions ($40-80).

To adapt a Nikon lens on a Canon EOS body requires an adapter of 2mm
thickness - no optics required to preserve infinity focus. You can buy
such an adapter for as little as $35.

-Dave

Archived from groups: rec.photo.digital (More info?)

Jim Townsend <not@real.address> writes:
> Gisle Hannemyr wrote:
>> Tom writes:

>>> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
>>> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use this

>> Yes, with a $175 Cameraquest adapter:
>> http://www.bobatkins.com/photography/eosfaq/manual_focu...
>>
>> You'll loose autofocus and will be restricted to stop-down metering.

> I believe you also risk not being able to focus at infinity..

This is the case with the adapter to use Canon's older FD-mount on
EOS bodies (EF-mount) - unless the adapter has an optical element
that corrects it. The Cameraquest F-mount to EF-mount adapter gives
infinity focus without such an optical element

> The adapter has thickness and moves the lens away from the camera..
> Not as much as an extension tube, but probably enough to screw up
> infinity focus  

Nikon's F-mount is physically smaller than Canon's EF-mount, so
F-mount lens fits within the EF-mount.
--
- gisle hannemyr [ gisle{at}hannemyr.no - http://folk.uio.no/gisle/ ]
------------------------------------------------------------------------
Kodak DCS460, Canon Powershot G5, Olympus 2020Z
------------------------------------------------------------------------

Archived from groups: rec.photo.digital (More info?)

Tom writes:
> I've inherited an old Nikon N6006 with a Sigma autofocus 28-105mm
> 1:4-5.6 (58 mm dia) lense. If I buy a Canon EOS 20d, can I use this
> lense on this Canon body?

Probably not. Even if it were an EOS mount Sigma lens, maybe even
not then.

I have the EOS mount 70-210 f/2.8 and 28-70 f/2.8 Sigmas purchased in
1993ish and neither works on post Elan-II era bodies (my 300D for
instance). They give ERR99 because Canon changed the signalling
protocol for aperture stop down, and Sigmas reverse engineering of
that protocol (rather than licensing it) was successfully foiled.

As such, I can only use these lenses on aperture priority mode wide
open (f/2.8). Later model Sigmas may be chip upgradeable. Mine were
not however.

Throw in the fact that you in your case would somehow need to get
these Nikon mount Sigmas to even fit on the EOS mount, odds are slim
to none that it'll all work in the end.

For more info on the EOS issue, see FAQ #7 here:
http://sigmaphoto.com/faq/faq.asp?navigator=3

Best Regards,
--
Todd H.
http://www.toddh.net/