Simple FPV camera FOV measurement tool
Description
I made this simple design to measure the FOV (Field Of View) of FPV cameras used on quadcopters etc. since I never believed the numbers the manufacturers provided (why are they always round numbers? and do they measure horizontal, vertical or diagonal?) and some manufacturers don't even tell you. The holes are 10 degrees distance between each other, hold it over the lens of the camera whilst your DVR is recording, then you've got video to examine & pause afterwards. I'm working on a more elaborate measurement tool that can measure the horizontal, vertical and diagonal FOV of most FPV cameras all at once. This is designed for 12mm diameter lenses, if you want a version of this for larger lenses, drop a comment. Print it in a dark colour, non-flexible material, 0.2mm layer height, no support needed. About 32 minutes print time, less than 5 grams. ---------------------------------------------------------- UPDATE: I have added a version 2, this is a little stronger, has small holes at 5 degree intervals for more precise measuring, and is designed to be used on cameras already installed in quadcopters etc. Simply hold the point of the V shape to the bottom of the lens of the camera, you'll know it's aligned right as you will be able to see through both alignment channels at -40 and +40 degrees. ---------------------------------------------------------- UPDATE 2: 10/3/2021 I've added a v3, a remix of v1 with a combination of the 5 degree notches from v2, along with a larger hole for the lens to sit in because I needed to make one to accommodate the 13mm diameter lens of the Foxeer DigiSight I was testing. You can sell prints of this, but don't overcharge, and link back here. Tips are most welcome https://www.paypal.com/paypalme/Haku3D and will encourage me to make more designs for everyone to benefit.
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