You will not understand the significance of first (front) and second (rear) focal planes if you listen to all the malarkey that's being promoted. Each focal plane has particular usefulness for particular purposes, yet each can be dismal performers in contrary circumstances. I explain here what each focal plane excels at and where each is weak. You will understand exactly which type is right for your use before the end of this video, and you'll almost certainly know more than most box store clerks!
