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		Zoom lens for bird photographyHi Sudhir I am already a student of yours (in the All in one pack course). I have Canon RF 100-500 mm lens that I use for wildlife /bird photos. As I also have a Sigma 150-600 mm Contemporary lens, Whether I should dispose the lens (as per the course / MFN). Also do you suggest a prime lens (400mm / 600 mm / 800 mm EF) for bird photos – difficult to capture raptors with 100-500 mm lens at times! 
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