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Old Apr 6, 2009, 11:28 AM   #1
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Some photos trying out this 400mm combination:











cheers

bb2
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Old Apr 6, 2009, 7:47 PM   #2
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Not bad at all. I especially like the second and last ones.

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Old Apr 6, 2009, 8:34 PM   #3
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Hi Dawg

Thanks for commenting. The combination is a little soft and some CA, although that is due to the TC. Nice to know you can pull out a TC and have a 400mm lens if the Bigma has been left at home. Better still take the Bigma! Just experimenting with some borrowed gear.

cheers

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Old Apr 7, 2009, 1:20 AM   #4
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beachboy2 wrote:
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Hi Dawg

Thanks for commenting. The combination is a little soft and some CA, although that is due to the TC. Nice to know you can pull out a TC and have a 400mm lens if the Bigma has been left at home. Better still take the Bigma! Just experimenting with some borrowed gear.

cheers

bb2
I've got a matched 2X TC for a 70-150 vivitar lens that I use with this 200mm of mine. Like you said they are a little soft and the CA adds up when using them. I'll try a few with my Sigma APO 1.4 TC if it will fit. The APO TC seems to help with the CA.

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Old Apr 7, 2009, 1:32 AM   #5
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I tried my sigma 1.4 TC and it won't fit. Not quite sure why.

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Old Apr 7, 2009, 4:23 AM   #6
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beachboy2 wrote:
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I tried my sigma 1.4 TC and it won't fit. Not quite sure why.

bb2
If yours is a K-mount viv 200mm it won't fit. The outward lens of the TC sticks out too much and is big enough around to prevent most K-mount lenses from mating up. Mine is a screw mount lens and some of those will work with the Sigma TC as the opening of the lens mount is big enough in the ID and the rear lens is recessed enough to allow the two to mate up.

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