Author Topic: Range Formula  (Read 221 times)

istarion

  • Full Member
  • **
  • Posts: 41
    • View Profile
Range Formula
« on: April 12, 2018, 03:21:22 AM »
While I now understand how to do the math to properly select suitable lenses based upon their diameter and focal length, one part I do not yet understand is how lens diameter and focal length translate into effective range (given all other variables being equal). For instance, I know that a larger lens with a longer suitable focal length will give you longer range; I just can’t predict how *much* longer range. Is there a formula that I can use to predict the efficiency of a lens of a particular diameter and focal length?
« Last Edit: April 12, 2018, 03:25:19 AM by istarion »