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Old May 15, 2010, 1:53 PM   #1
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Default Killer deal on a telephoto lens?

This telephoto lens:


has about the power of this lens (first one):


The obvious physical and price differences must mean the cheaper one will not do what the more expensive one will do. What is probably lacking in the first lens?

Thanks very much for any enlightenment for this beginner, I'm using a Canon S3 IS.

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Old May 15, 2010, 3:54 PM   #2
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My guess?

Optical quality.
  • The lens is the thing.
  • 'Full Frame' is the new 'Medium Format'.
  • "One good test is worth a thousand expert opinions." - Tex Johnston, Boeing 707 test pilot.
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Old May 15, 2010, 4:34 PM   #3
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Quality. Period.

In these times you really get what you pay for..... Besides a 50mm 1.8, those are a steal.
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