hmmm....another thing i've been considering is, and please slap me should i utter naughty words, a 500mm mirror lens for my camera. i've seen them for around teh $300 mark, and wonder how they would go for this kind of photography. anyone with any experience using these lenses? my only problem is that i would be fixed to a single focal length, and 500mm is pretty close up...
my other choices of lens that i'm looking at is either the sigma 70-300mm or the tamron 70-300mm
any thoughts on these?
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