The stage was well illuminated but just with warm light (2800K), focus was
very fast but front shifted. When I tested the same set up at home with
window light, it was darker and AF still accurate.
Next time I will borrow my friend's 70-200/2.8 IS and try it out.
C.H.Ling
----- Original Message -----
From: "Chuck Norcutt"
> All I can say is that my 5D with Tokina 28-80/2.8 can focus on wedding
> reception dance floors in light so low that I can hardly see the people
> I'm focusing on in the viewfinder. That is the principal reason I
> bought it. But since I added a 540EZ flash unit it can now focus in
> total darkness out to 15 meters.
>
> Your Tamron 70-300 (I assume) is f/4-5.6 so you're one to two stops
> down. Try a 2.8 lens for the difference.
>
> Chuck Norcutt
>
> C.H.Ling wrote:
>> Even the 5D II which claimed has been taking care of AF issue at
>> different
>> color temp. has problem, it fail with my Tamron 70-300 when I was
>> shooting
>> my son's U. Grad. Ceremony inside a hall. For day time shooting it was
>> perfect, similar problem happen with my 40D but it could be a lens and
>> camera matching issue.
>>
>> C.H.Ling
>>
--
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