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Wolfboy
21st of February 2006 (Tue), 18:14
Hi,

Is is possible to use the 540EZ with a 20D in a dedicated of fully automatic mode, or do I need to purchase the 550EX

Regards

Wolfboy
Jon
22nd of February 2006 (Wed), 16:01
No it isn't. You need an EX flash for E-TTL II.