Peter I think Robski birdsnapper are right.Full Sensor (FF) 1:1 as 35mm used to be, cropped on DSLR 1.5 or 1.6 X the focal length on small sensor the factor is much larger giving a multiplying factor of more than 3 they used to mark Focal Length equiv to 35mm so this misunderstanding whould not happen but more recently with some manufacturers they give actual mm . I hope thats not to long winded.
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