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Canon 70-200 f/4 L IS with 1.4x or Canon 70-300 f/4-5.6 L IS or 300 f/4 L IS over Tamron 70-300 VC?

Started Feb 19, 2015 | Questions thread
bronxbombers4 Veteran Member • Posts: 3,387
Re: test pics from all three:

I can also add that the 70-200 f/4 IS tested above beat my 70-200 2.8 non-IS at 200mm f/4 which in turn beat a borrowed 70-200 f/2.8 IS (both at 200 2.8).

My 70-300 non-L was pretty good but it did drop a lot of contrast once you went above 180mm and the focusing was more erratic and it didn't have quite the micro-contrast pop of the 70-200 2.8 non-IS or f/4 IS or 70-300L at any part of the range.

My 100-300L wasn't really any sharper than the 70-300 non-L, maybe a trace less even at the long end, but it had far, far richer contrast near 300mm. The AF was very noisy and slow. Had no IS.

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