And now I'm confused. I noticed on the 498RC4 specs it lists "Attaches by: 1/4" - 3/8" screw attachment type"
And on the 498RC2 specs it says: "1/4" screw attachment type"
"Attachment" refers to how it attaches to the tripod?
Attaches by" refers to the hole in the camera?
What's the standard size for an EOS camera?
Refer to:
498RC2
http://www.manfrotto.us/midi-ball-head-with-rc2![]()
498RC4
http://www.manfrotto.us/midi-ball-head-with-rc4![]()

