jnturja :
1.Not all my friends have canon lenses and I'm not that stupid to buy a nikon when all my friends have canon. I just want to test canon glasses in my nikon to see what kind of picture they produce.
2. I need variable ND filters of 52mm and 58mm for my video works in the daylight.
1) Not worth it, if you want to see what video they produce ask for samples.
2) You have two options:
a) Buy only 58mm filters and use a stepdown ring
b) buy one filter per lens
If possible b) is the better option, since you won't have to deal with swapping filters around. For f2.8 wide open in bright sunlight (kit lenses are usually 3.5-5.6) you'll need http

/www.bhphotovideo.com/c/product/1012346-REG/hoya_xpd_58nd64_58mm_pro_nd_64x.html, though if you shoot F4 @ 60Hz with 180degree shutter you can use a 4 stop ND instead.