sigma 28-300 on d3400 - doesn't work

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lennythephotographer Regular Member • Posts: 106
sigma 28-300 on d3400 - doesn't work

hi
i bought a used sigma lens, 28-300 1:3.5 - 6.3, for my nikon d3400.

i get a message: "incompatible lens".

i can only shoot manual focus & manual exposure.
why?
how could i know it's not compatible?
can i make it compatible with an adapter or something?

thanks

Nikon D3400
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