I am searching on eBay for a cheaper lens to play with for my D3100. I don't know what to look for.
I believe first, I look for the lens having an "F Mount", do I have to look for a thread size or does that just matter when looking for filters? What should I be looking for? What is definitely not compatible?
I do shoot a lot in manual so I don't mind about AF. I am looking for a cheap lens.
Added (1). I am interested in prime lenses. I am not too keen on looking for adapters.
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What alternate lenses will work for my Nikon D3100?