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Cameras, Lenses and Accessories: Discuss TC question re DOF & IS...Am I correct on following assumptions if I used a 2x convertor with let's say a 70-200 f/2.8 IS lens ...
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Old 18-09-2008, 17:11   #1 (permalink)
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TC question re DOF & IS

Am I correct on following assumptions if I used a 2x convertor with let's say a 70-200 f/2.8 IS lens ?

- DOF will be equivalent to f/5.6 on 140mm-400mm focal range
- IS will work in same manner
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Old 18-09-2008, 17:13   #2 (permalink)
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Re: TC question re DOF & IS

Yes.
Yes.
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Old 18-09-2008, 17:15   #3 (permalink)
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Re: TC question re DOF & IS

Dave gets gold star & can stay up late tonight
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Old 19-09-2008, 18:10   #4 (permalink)
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Re: TC question re DOF & IS

I wouldn't use a 2X on a zoom, i only use mine on my primes, 1.4X is good
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Old 19-09-2008, 18:34   #5 (permalink)
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Re: TC question re DOF & IS

Quote:
Originally Posted by gsgary View Post
I wouldn't use a 2X on a zoom, i only use mine on my primes, 1.4X is good
IQ drops too much ?
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Old 19-09-2008, 19:19   #6 (permalink)
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Re: TC question re DOF & IS

Quote:
Originally Posted by Dave View Post
IQ drops too much ?
Yes - upgrade star to platinum!
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Old 20-09-2008, 09:33   #7 (permalink)
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Old 20-09-2008, 18:36   #8 (permalink)
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Re: TC question re DOF & IS

Dunno if cranon do one but Nikons 1.7x is the highest recommendation the x2 is over the hedge material,
Plus Dave did u see the moon last night i got some pretty good pics of it stood in a field pitch black armed with the 70 200vr and the tripod and remote etc.
Now all i got a do is work out how i post the dam things on here?
Knbow i should have kept my 105 macro with all these big hairy spiders in the garden.
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