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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 17 Jan 2011 (Monday) 20:10
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70=200L f4 upgrade to f2.8?

 
Koshin
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Jan 17, 2011 22:35 |  #16

m.c.chavez wrote in post #11662632 (external link)
so thats why the lights dim when someone pulls it out...

...:)


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Koshin
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Jan 17, 2011 22:37 |  #17

I picked up a 300 prime f/4 IS really cheap not to long ago.....


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fobCSVT
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Jan 17, 2011 22:39 |  #18

The sigma 100-300mm f/4 might be a good alternative or you could go with the 300mm f/4 (IS or non-IS) from canon. Both of these option will give you f/4 at 300mm. The use of TC will slightly degrade sharpness and slow down autofocus which might not be good for sports in less than perfect light.




  
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Negativ3
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Jan 17, 2011 22:48 as a reply to  @ Koshin's post |  #19

I have the 70-200 f4 IS and occasionally use a Kenko 1.4xTC, on a 7D.

In good light it works really well.

Cons:
1. Slight image softness due to TC elements.
2. Slower AF response.


Andy
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Mark-B
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Jan 18, 2011 00:03 |  #20

mp2997 wrote in post #11662348 (external link)
Would love to hear feedback from anyone that has used the 2.8 with 1.4TC for sports during daylight hours.

I use a Tamron 1.4x TC on the f/4 version during daylight. No problem with focus speed and pictures look fine. Would be even better with the f/2.8 lens because you would be shooting the equivalent of f/4 instead of f/5.6


Mark-B
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in2fx
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Jan 18, 2011 01:14 |  #21

Just my opinion.....
What about coupling a 2x to a f/2.8 which gives you the fast lens by itself and no slower than a 100-400 when connected for the extra reach giving you versatility, which is the way that I have gone. The difference between the 1.4x and the 2x is a big difference in focal length but not such a big difference in losing that extra stop.


Steve
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Rocketdun
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Jan 18, 2011 03:46 |  #22

If your son's games are during the day you might be able to shoot with the 100-400, but if you shoot games under the lights or later in the day you may want to opt for the 70-200 lens and if you look on the sidelines during most of the college and NFL games most of the shooters will have at least a 70-200, probably a longer lens a 300 or 400 2.8 (which by the way are a bit pricey you have to put bring you big boy billfold to the table for one of those. I did see a couple of 300 2.8's on sale from reputable dealers on e-Bay for $1,648 and $1,231 or so. If you do choose any long tele lens stick with the 1.4x you don't loose the f stops you would if you were using the 2x TC.


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70=200L f4 upgrade to f2.8?
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