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Old Dec 15, 2005, 11:30 PM   #1
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Didn't make it to the San Diego Zoo because we are going to go ahead with the year membership later so we went to the LA Zoo. Not much out but I did get to see the Lion. This is with the 300 L IS and 1.4 TC wide open and handheld. Still would have liked to had the 100-400 at the zoo but I think the sharpness of the 300 has won me over.


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Old Dec 15, 2005, 11:35 PM   #2
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He looks the like the old wise man. The sharpness is definite. The composition is sure.
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Old Dec 15, 2005, 11:47 PM   #3
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yea... looks good! you still get more sharpness out of the 300 over the 100-400 with the TC?
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Old Dec 15, 2005, 11:58 PM   #4
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Yes the 300 with 1.4 TC is still quite a bit sharper than the 100-400. My problem is versatility. I know the 100-400 wins in that department. I need to figure out how often I'm going to run into situations where this 300 setup is going to be too much.
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Old Dec 16, 2005, 12:09 AM   #5
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Actually the above shot is without the TC because 420mm was to much for this shot.
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Old Dec 16, 2005, 12:25 AM   #6
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i would have thought the TC would negate any sharpness differences between the two..
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Old Dec 16, 2005, 1:03 AM   #7
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I was expecting that but its not the case. The 100-400 is surprisingly soft IMO for such a high priced lens. The push / pull zoom is also known to suck in dust, which another thing I'm considering in deciding between the two.
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Old Dec 16, 2005, 1:45 AM   #8
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i dont know if i buy the vacuum effect.. if that were the case any extending zoom would have an equal chance of doing so.. the rear-element should negate any dust coming in from that reason...

yea.. you may have a bad copy of the 100-400 if it is worse than your 300 w/ a tc.. most of the comparisons i have seen show the 100-400 the equal of the either of the 300s with teleconverters attached.. i mean, they are no equal at 300mm without the TC, but with the TC they should be comparable..

-dustin
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Old Dec 16, 2005, 10:13 AM   #9
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I think the vacuum effect comes from the fact that the zooming can be done much quicker by push pull than turning a ring so there is more chance of a sucking effect to happen.

I tried two copies of the 100-400 so either I got two bad copies or a really good copy of the 300 and TC. The reviews I have read say this combination has an edge over the 100-400. It does bring them closer to the point that I have to study to see but it is there.



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