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Dave 18-09-2008 18:11

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

silkstone 18-09-2008 18:13

Re: TC question re DOF & IS
 
Yes.
Yes.
:D

Dave 18-09-2008 18:15

Re: TC question re DOF & IS
 
Dave gets gold star & can stay up late tonight :D

gsgary 19-09-2008 19:10

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

Dave 19-09-2008 19:34

Re: TC question re DOF & IS
 
Quote:

Originally Posted by gsgary (Post 230503)
I wouldn't use a 2X on a zoom, i only use mine on my primes, 1.4X is good

IQ drops too much ?

Markulous 19-09-2008 20:19

Re: TC question re DOF & IS
 
Quote:

Originally Posted by Dave (Post 230505)
IQ drops too much ?

Yes - upgrade star to platinum! :D

Dave 20-09-2008 10:33

Re: TC question re DOF & IS
 
:innocent:

muscle750 20-09-2008 19:36

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?:confused-
Knbow i should have kept my 105 macro with all these big hairy spiders in the garden.


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