Difference between 300mm and 500mm in crop terms

Started Jul 20, 2012 | Discussions thread
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Difference between 300mm and 500mm in crop terms
Jul 20, 2012

I have a D5100 and a Tameron 70-300 VC for birds.

I am considering getting a Sigma 150-500 or a 50-500 but want to know how much closer my shots will be at 500 vs the 300 now.

It sounds like its almost double so would it be like doing a 1:1 or maybe 80% crop on the current 300mm photos??

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