https://community.usa.canon.com/t5/EF-RF-Lenses/extenders-mark-1/m-p/162284#M14634 <P>can any one tell me the difference from the mark 1 /2/3 ??? i bought a 1.4x 2x mark 1 extenders cheap from japan is the mark one really so much worse than the mark 2 and 3 is it worth upgrading. no one seems to know???</P> Wed, 20 Jan 2016 22:47:57 GMT paulbrogden10 2016-01-20T22:47:57Z https://community.usa.canon.com/t5/EF-RF-Lenses/extenders-mark-1/m-p/162284#M14634 <P>can any one tell me the difference from the mark 1 /2/3 ??? i bought a 1.4x 2x mark 1 extenders cheap from japan is the mark one really so much worse than the mark 2 and 3 is it worth upgrading. no one seems to know???</P> Wed, 20 Jan 2016 22:47:57 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/extenders-mark-1/m-p/162284#M14634 paulbrogden10 2016-01-20T22:47:57Z https://community.usa.canon.com/t5/EF-RF-Lenses/extenders-mark-1/m-p/162340#M14635 <P>Each version upgrades something! Obvious&nbsp;or why do it? &nbsp;As new lenses are added to the Canon line, updates in the extenders is required. &nbsp;How much better is for you to decide. &nbsp;I have the second version and do not intend of getting the third version.</P><P>Canon has a list as to which converter works or recommended for each lens. &nbsp;You know if you got the lens form or in Japan it is not a Canon USA version? &nbsp;DId you get a grey market lens?</P> Thu, 21 Jan 2016 11:15:51 GMT https://community.usa.canon.com/t5/EF-RF-Lenses/extenders-mark-1/m-p/162340#M14635 ebiggs1 2016-01-21T11:15:51Z