A CFH12k lensing survey of X-ray luminous galaxy clusters - I. Weak lensing methodology S. Bardeau, J.-P. Kneib, O. Czoske, G. Soucail, I. Smail, H. Ebeling and G. P. Smith A&A, 434 2 (2005) 433-448 Published online: 11 April 2005 DOI: 10.1051/0004-6361:20041643