I'll buy the 100mm f/2.8 USM Macro soon.
And my question is simple, what's the asset of adding the Canon Tripod Mount Ring B on my 100mm f/2.8 USM Macro ?
(Sorry for noob question
)
This config will improve something when using this lens ?
The 100m Macro is a short lens, so I don't know if I need this collard or not.
And this is quite exepensive almost the 1/3 of the lense price on B&H. So is it really usefull for such a short lens ? Or only on huge one like the 180mm ?
Thanks in advance for your help.
Regards,
Laurent.


