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08/09/2006 11:47:30 AM · #1 |
Hello all and sundry...
Does anyone know of a good teleconverter for the Sigma 70-300/4-5.6 APO DG Macro Zoom? |
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08/09/2006 11:48:28 AM · #2 |
| Maybe one of the Sigma ones? |
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08/09/2006 11:52:04 AM · #3 |
faidoi,
Sigma seems to have *a lot* of teleconverters for Canon AF. I would like a 1.4x teleconverter, but the sigma site doesn't really point me to one... |
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08/09/2006 11:57:42 AM · #4 |
| You can't find one on the Sigma site because they don't recommend using a teleconverter on this lens. |
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08/09/2006 11:59:48 AM · #5 |
Thanks talmy,
I just got an email from Sigma confirming what you have said. |
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08/31/2006 08:44:55 PM · #6 |
Hmm... did they tell you why they don't recommend it for that lens?
I'm guessing it might just be an issue with AF not working properly because of the smaller aperture.
I got the exact same lens and I was looking to get a big teleconverter like the Kenko Pro 300 3.0x. I'm aware of the AF problems due to the light loss but I don't really mind not having AF.
So now I'm wondering if there's another issue with that lens and a teleconverter other than AF not working.
Message edited by author 2006-08-31 20:52:53. |
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08/31/2006 08:54:18 PM · #7 |
| IF you choose to go with a teleconveter, I have the Sigma 2X EX DG. I don't see any noticable drop-off in quality. The problem you will run into with that lens is the fact it's a slow lens as it is. A 2X will, in effect, double all your numbers...making that lens a 140-600 f/8-11.2. I have the 70-200 f/2.8 and need quite a bit of light to use it with my 2X. |
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