Close up filters

[cdiver2]

I am using a 100mm canon macro ef lens and want to put close up filters on. Doe's any one know the reproduction ratio for this lens with +1, +2, and +4 filters.
Thanks

 

[bigfrog23]

i think that the reproduction ratio is that you jut add the lenses actual reproduction ratio so that if it is 1:1 it becomes 2:1 for the +1 and 3:1 for +2 and so forth but i am not positive.

 

[cdiver2]

i think that the reproduction ratio is that you jut add the lenses actual reproduction ratio so that if it is 1:1 it becomes 2:1 for the +1 and 3:1 for +2 and so forth but i am not positive.

Sounds like common sense, but some times common sense doe's not prevail, one never knows