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70-200 L f4 Vs 100-400 f4.5 - 5.6 L
Hi All,
I have the Canon 70-200 L f4 and its a great lens, pretty light so useful for many applications. It suffers a for wildlife. I don't know if I should buy a 1.4 x convertor for it (the 2x puts it into manual focus) or Chop it in against the 100 - 400 L which I have read lots of good things about.
Has anyone used the 100 - 400 L ? I am going to Shetlands next year to photograph seals and hopefully Killer Whale. I feel the 200 might not be enough.
Dave
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