hi ! was planning to buy a 10-20mm wide angel lens but it is kinda expensive. will a wide angle converter do its job ??
since its so much cheaper what are the perks and downs of a wide angle converter ?
thirdly whats the difference between a 0.25x and a 0.45x ?? am i right to say a 0.45x has a larger field of vision ??
pls help !!