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Lens dilemma!


boxer57 8 85 United Kingdom
14 Mar 2008 12:00PM
I will shortly be in a position to buy a new lens, I have narrowed my choice down to 2 the Canon 100-400L f4.5/5.6 or the Sigma 100-300 f4 and a 1.4x TC, I will mainly be shooting motorsport and wildlife with the combination.

Which would you choose and why?

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ripleysalien 8 1.2k 11 United Kingdom
14 Mar 2008 12:32PM
I now have the 100-400 and like it for the extra reach, and its and L lens on a 5, BUT i had the 100-300 sigma and for me I think it was a tad sharper, the zoom is easier to use, Twist rather than the trombone type.
Either lens loses auto focus with the converter i think, I have the matching 2x sigma one as no one wanted it, its good but my eyesight is crap and manual focus is for me not good.
SO if I was here i would say go for the sigma TBH UNLESS you have a 5D then the Canon one.
HTH

Steve
sidaorb 9 3.9k 2 England
14 Mar 2008 12:36PM
Steve,

Not sure if you can stretch the budget to a s/h Sigma 120-300 F2.8, just got one, spot on lens.

Still has great AF with a 1.4x and can still take a 2x for wildife photography.

1.4x = 420mm F4
2x = 600mm F5.6

Carl
imagegrill 9 429
14 Mar 2008 6:02PM
The canon 100-400 L will focus with a 1.4x converter, I can vouch for that on a 5D.
But that's not what you asked Wink

Any converter will reduce quality and the 1.4 will add a stop. Go for the 100-400 L and reduce the messing around with the extender on the sigma.
14 Mar 2008 8:52PM

Quote:Steve,

Not sure if you can stretch the budget to a s/h Sigma 120-300 F2.8, just got one, spot on lens.

Still has great AF with a 1.4x and can still take a 2x for wildife photography.

1.4x = 420mm F4
2x = 600mm F5.6

Have you tried 2 x 1.4X? I've done some test and that combination seems to work better than a straight 2x. (At least on my Bigma!) I know your not quite reaching 600mm with that combo, but it's close enough and in my tests the results were better. Smile




Carl

tomcat Plus
9 6.4k 15 United Kingdom
14 Mar 2008 9:32PM
If it is within your budget..how about the Canon 400mm 5.6 prime
Especially if you are shooting motor sport
Auto focus is wicked

Adrian
ripleysalien 8 1.2k 11 United Kingdom
14 Mar 2008 11:31PM

Quote:The canon 100-400 L will focus with a 1.4x converter, I can vouch for that on a 5D.
But that's not what you asked


It will if you tape the contacts, I have tried a 1.4x and the 100-400 on my 5 without the contacts taped and it will not auto focus, Canons word is only 2.8 or faster lenses will auto with either converter, but if yours works, great.

Steve

Having used both the sigma 100-300 will beat the 100-400 hands down and I have 5000 of canon kit so its not a brand thing, I REGRET getting the 100-400 big time, I should have got the 70-200 f2.8 and a 1.4x.
cambirder 11 7.2k England
14 Mar 2008 11:40PM

Quote:Canons word is only 2.8 or faster lenses will auto with either converter


No, F4 lenses work fine with the 1.4.
polka 7 4
15 Mar 2008 4:00PM
doesn't it depend on which body the converter and lens is attached to?
cambirder 11 7.2k England
15 Mar 2008 4:13PM

Quote:Doesn't it depend on which body the converter and lens is attached to?


Series 1 Canon's will AF at f8 (center point only), all lesser bodies at f5.6.
XxPaulxX 9 261 England
15 Mar 2008 5:40PM

Quote:Quote:The canon 100-400 L will focus with a 1.4x converter, I can vouch for that on a 5D.
But that's not what you asked
It will if you tape the contacts, I have tried a 1.4x and the 100-400 on my 5 without the contacts taped and it will not auto focus, Canons word is only 2.8 or faster lenses will auto with either converter, but if yours works, great.

Steve

Having used both the sigma 100-300 will beat the 100-400 hands down and I have 5000 of canon kit so its not a brand thing, I REGRET getting the 100-400 big time, I should have got the 70-200 f2.8 and a 1.4x.

I hate to see people unhappy, let me give you 50 for the 100-400 to try and get rid of that regret of yours Wink

Paul
tomcat Plus
9 6.4k 15 United Kingdom
15 Mar 2008 6:26PM

Quote:Either lens loses auto focus with the converter i think


The Sigma 100-300 works with the 1.4x OK and is still quite responsive
All of my kite shots from Gigrin were taken with the same combination +20D

Adrian

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