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70-300L change of mind

Started Oct 5, 2014 | User reviews thread
OP drbird Regular Member • Posts: 432
Re: 70-300L change of mind

Yes at minimum focus distance you roughly end up with the same focal length as the 4.0/70-200 has. Focus breathing is quite common nowadays in modern designs, I guess it doesn't bother most people or most don't realize it. Just look at all the 18-200(300) and the like they suffer massive from focus breathing as does one of the newer Nikon 2.8/80-200. An extension tube often helps to get some of the original focal length back (you basically focus with extension and avoid the IF-mechanism which mostly is responsible for the focus breathing – but also for the compact size, ice IQ and blazing fast AF of modern lens)

No I didn’t really check at what distance it kicks in, I often use it at 300mm around 5-10m and it works out very similar to my 2.8/300. But as soon as I get the tripod mount for the lens I will compare it to the 2.8/300 to get some valid data.

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Geraldo Hofmann

 drbird's gear list:drbird's gear list
Canon EOS 7D Mark II Canon EF 400mm f/5.6L USM Canon EF 70-300mm f/4-5.6L IS USM
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