I basically bought a canon professional camera i be thinking of gettng some lense for it but..?
Answers: My friend you definitely entail some classes in photography.
Exactly what "professional" Canon did you buy? That information is needed if you expect any adjectives answers.
What you heard something like "... flower-shaped ones..." refers to the lens hood used for ultra wide-angle lenses. The lens hood is "cut out" on the diagonal so it doesn't interfere with the angle of landscape of the lens. (The angle of view of a lens is measured across the diagonal of the motion picture or sensor, not side to side.)
These books might help you:
"Hands-On Digital Photography" by George Schaub
"How Digital Photography Works, Second Edition" by Ron White
More information from you is needed up to that time anyone can give you an intelligent answer to this interrogate. Is your camera a film or a digital camera? If it is a is a digital camera, is it an ES-1 or an ES 5 series camera. If it is none of the above, you requirement to let us know what model it is. A description of the kind of pictures you want to take would also backing in answering your question.
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