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Mount Adapter EF-EOS R effect on focal distance

gkshiroma
Apprentice

Since using the adapter with EF lenses on a EOS R6 II moves the lens further away from the sensor, does the minimum focusing distance decrease?

1 ACCEPTED SOLUTION

p4pictures
Whiz
Whiz

No the adapter places the DSLR lenses at the same distance from the sensor as they would be when fitted to a DSLR camera. So there is no change to the focus range. 

The adapter has two functions:-

Convert the EF/EF-S lens mount and connectors to the R mount 

Space the EF/EF-S lenses the same distance from the sensor as they were designed for. 


Brian
EOS specialist trainer, photographer and author
-- Note: my spell checker is set for EN-GB, not EN-US --

View solution in original post

3 REPLIES 3

p4pictures
Whiz
Whiz

No the adapter places the DSLR lenses at the same distance from the sensor as they would be when fitted to a DSLR camera. So there is no change to the focus range. 

The adapter has two functions:-

Convert the EF/EF-S lens mount and connectors to the R mount 

Space the EF/EF-S lenses the same distance from the sensor as they were designed for. 


Brian
EOS specialist trainer, photographer and author
-- Note: my spell checker is set for EN-GB, not EN-US --

kvbarkley
VIP
VIP

Nope, because with the lack of the mirror box, an RF lens is closer to the sensor anyway. The adapter simply adds back the distance of the mirror box.

ebiggs1
Legend
Legend

Interesting thought but if it did change minimum focus it may cause a loss of infinity focus. In photography you always give to get.

EB
EOS 1DX and 1D Mk IV and less lenses then before!
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