70-300 L and a beautiful girl..

Started Nov 19, 2012 | Discussions thread
joger Veteran Member • Posts: 4,098
Re: 120-300 at 300mm f2.8 1Dsiii 200 iso handheld..

what took you so long to find them in your archive?

You confirmed it that you have to use the lenses side by side and see the results. As you don't have the 300 f/2.8 II and I neither own a 70-300 nor a 120-300 it will take some time to get the tests performed. But I will rent both the 70-300 and the 120-300 to perform some tests in Spring 2013 - just out of curiosity.

In the meantime I have a look at the ISO 12233 charts and wonder how they translate into real world.

This is an example of the 300 f/2.8 II plus 2x Extender III

Canon 300 f/2.8 II plus 2x extender III at 600 mm f/5.6

So the performance without 2x Extender is nice to see but pointless for my use cases - but even here the ISO 12233 test is not very favorable for the Sigma - but I will give it a test early 2013 and post the results in the forum.

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