Question: must have canon fd lenses?
Answer: 24mm f/2.8. REVIEW. At its specific focal length, the 24mm f/2.8 (about $125) makes a fine choice for shooting landscapes.
50mm f/1.4. REVIEW. ... 
135mm f/2.5 SC. REVIEW. ... 
28mm f/2.8. REVIEW. ... 
85mm f/1.2 L. REVIEW. ... 
35-105mm f/3.5 Macro. REVIEW. ... 
70-210mm f/4.0. REVIEW. ... 
200mm f/4. REVIEW. ...