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It has the same (approximate) field of view on your D3400 as a 160.65 mm lens would have on a full frame camera, yes. 157,5 mm come to think of it actually: as
by roelschroeven 6y ago
It has the same (approximate) field of view on your D3400 as a 160.65 mm lens would have on a full frame camera, yes. 157,5 mm come to think of it actually: as far as I know the crop factor on Nikon crop cameras is 1.5. On a medium format camera you would need an even longer lens to get the same field of view.
I'm not sure about the aperture equivalent. Aperture influences both exposure and depth-of-field, and I don't think they vary in the same way between crop cameras and full frame cameras.