Help me sort my Mach Loop setup!

[magpieant]

Hi all.

We are finally doing the Mach Loop next Friday.

I own the following ....

5dmk2
40d
Sigma 70-200mm 2.8
Canon 70-200 f4 L IS USM
Kenko x2 TC

I'm trying to work my best setup with that lot.

Bearing in mind the f4 lens won't work with the TC, I'm thinking

5dmk2 with TC and 70-200 which
Will give me 140-400 at f5.6

And

40D with the 70-200 which gives me 112-320 at f4.

What do people reckon?

Obviously putting the TC and 70-200 on the
40d will give me lots more reach up to 640 at 5.6 - but wondering if less reach / better image quality preferred

I've never been before .... We're doing Cad West and hoped some of your regulars could advise!

Cheers.

Anth.

 

[Flynndog]

Hi Anth.

I'm afraid I can't help with your set up request- but I would suggest posting this again in the General, transport section. That's where the Cad west gang post images/ have discussions

Cheers

Iain

 

[magpieant]

Thanks Iain! On my
Phone so missed that!!!

 

[pete.rush]

Well I've never been impressed with the 2x TC on the 70-200mm, remember you lose 2 fstops and also about 70% autofocus speed and accuracy with the 2x TC, primarily they're designed for prime lenses which can handle these restrictions much better. It depends on you location, but apart from the bwlch shelves the 70-200mm a bit short for most locations, you'll have to stay down the hill at Cad West with the 70-200. I started off with a 300mm f4 and 20D, the 300mm still gets you majority of shots on a cropped body. As for setting, AVservo, single autofocus point, and depending on the weather high shutter speeds 1/640 - 1/1250 depending on the jets, props 1/200 - 1/400, helicopters about 1/200 depending on how smooth your pan is.