Recent content by Gez Ogion

ok.. not sure if i have got this right ... but here goes,, real object height = distance in M (10) x object height on sensor in mm .. i have a fullframe 35mm which is 1:1 .. so a 90mm bird would be 90mm on sensor? that gives me 10M x 90mm = 600 then divide by focal length in mm = 600 = 1.5m...

I have a bit of an unusual question on size conversion with photography. I know my sensor size (35.6x23.8mm) .. It's a Sony a9ii full-frame I know my lens focal (600mm) and it has a max magnifcation ratio of 0.2. And at 600mm it has just under a 5 degree angle of view I know the size of the...