Any experience with the Sigma 1.4 EX DG converter?

2012-12-05 Thread Krisjanis Linkevics
Could be I can get one really cheap, anybody have first-hand experience with it 
and maybe even mounting Pentax lenses on it?
The list of supported lenses on the Sigma web is extremely small.

kris

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Re: Any experience with the Sigma 1.4 EX DG converter?

2012-12-05 Thread David J Brooks
I have one, bought it for the Sigma 300 f4. It does not do AF although
it will on occasion. I have had little success in mounting the few
Pentax lenses i have but works well on the above mentioned Sigma

Dave

On Wed, Dec 5, 2012 at 7:18 AM, Krisjanis Linkevics
krisjanis.linkev...@exigenservices.com wrote:
 Could be I can get one really cheap, anybody have first-hand experience with 
 it and maybe even mounting Pentax lenses on it?
 The list of supported lenses on the Sigma web is extremely small.

 kris

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Re: Any experience with the Sigma 1.4 EX DG converter?

2012-12-05 Thread Mark Roberts
Krisjanis Linkevics wrote:

Could be I can get one really cheap, anybody have first-hand experience with 
it and maybe even mounting Pentax lenses on it?
The list of supported lenses on the Sigma web is extremely small.

I have one. It seems to be very good quality for a teleconverter. I
got pretty good results with the FA*80-200/2.8 as I recall. AF is by
screw drive linkage through the teleconverter and if works reasonably
well. The AF linkage makes manual focusing problematic because the
linkage sometimes binds up when being driven from the wrong end (that
is, the lens driving it rather than the camera body).

 
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Re: Any experience with the Sigma 1.4 EX DG converter?

2012-12-05 Thread John Francis
On Wed, Dec 05, 2012 at 11:25:15AM -0500, Mark Roberts wrote:
 Krisjanis Linkevics wrote:
 
 Could be I can get one really cheap, anybody have first-hand experience with 
 it and maybe even mounting Pentax lenses on it?
 The list of supported lenses on the Sigma web is extremely small.
 
 I have one. It seems to be very good quality for a teleconverter. I
 got pretty good results with the FA*80-200/2.8 as I recall. AF is by
 screw drive linkage through the teleconverter and if works reasonably
 well.

I have one as well, and I too used it quite often on the 80-200/2.8.
A lot of my motorsports images were shot with this combination.
(Nowadays, of course, the 60-250 is more likely to fill that slot).


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RE: Any experience with the Sigma 1.4 EX DG converter?

2012-12-05 Thread John Sessoms

From: Krisjanis Linkevics

Could be I can get one really cheap, anybody have first-hand
experience with it and maybe even mounting Pentax lenses on it? The
list of supported lenses on the Sigma web is extremely small.

kris


I have an older Sigma 1.4 EX (pre-DG) and it works well with my Sigma
300f/2.8  Tokina 80-200f/2.8.

Build quality is adequate, and it's only a little soft for digital. The
DG version should be optimized much better for digital.

The only lens that's ever given me any trouble is the Bigma (Sigma
50-500), but that's not a fault with the converter.

If the price is really cheap, it's probably worth it.



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RE: Any experience with the Sigma 1.4 EX DG converter?

2012-12-05 Thread Krisjanis Linkevics
 If the price is really cheap, it's probably worth it.

Thanks for the input, David, Mark, John Francis and John Sessoms.
I will try to get my hands on it, seeing as I have one lens on the supported 
list and it could also potentially work on others. The price is equivalent to 
~70$ LNIB.

kris
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