1 INTRODUCTION  
2 THE CFHTLENS ANALYSIS PIPELINE  
2.1 CFHTLS Data  
2.2 Data Reduction with THELI  
2.3 Object Selection, PSF Characterization and Photometric Redshifts with Gaussianised Photometry and BPZ  
2.4 Shape Measurement Method Selection  
2.5 Shape Measurement with Lensfit  
2.6 Summary  
3 METHODS: QUANTITATIVE SYSTEMATIC ERROR ANALYSIS  
4 RESULTS AND ANALYSIS  
4.1 Calibration Corrections  
4.2 Field Selection  
4.3 Comparison of Fields Which Pass and Fail Systematics Tests  
5 SYSTEMATIC ERROR ANALYSIS OF TWO-POINT COSMIC SHEAR STATISTICS  
6 TESTING REDSHIFT SCALING WITH GALAXY-GALAXY LENSING  
7 CONCLUSIONS