Note that you can stack more than 1 filter, meaning you can stack 2 pcs +4, depending on what you want to achieve.
Agree on that but stacking too many will degrade pic quality.
where to buy Hoya Close up +4 filter
For using macro on 50mm lens, u need a nikon pk-13 extension tube to achieve a 1:1. however i'm using pk-13 on my 105mm, works pretty well also
where to buy Hoya Close up +4 filter