Nikkor 50mm for D3100

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Will this lens work with the D3100 > NIKKOR 50mm f/1.8D NIKON LENS (Link)
what issues i may face with this lens if i use it with the D3100. Is it good for landscape ?
> Also what would you recommend.. 35mm or 50mm for landscapes an group pics ?
> Also if i have the 18-55 lens, will the 50mm be usefull ?

Hold on for a second

1. That Nikkor 50mm f1.8D lens will not autofocus on D3100 coz its not a AFS lens...there is one more model of 50mm with AFS which cost 11-13k Flipkart.com: Nikon AF-S NIKKOR 50mm f/1.8G: Lens

2.No...useless for landscapes... its only good for portraits and closeup shots
3. both 35mm and 50mm is not good for group pics...either get tamron 17-50 2.8 ->Flipkart.com: Tamron SP AF 17-50mm F/2.8 Di II LD Aspherical (IF) (for Nikon Digital SLR): Lens or else your 18-55 kit lens is enough

4. As I said both 18-55 and 50mm have different use...18-55 is very cheap and useful for general landscapes, group shots, party etc....and 50mm is good for portrait, flowers, product shots, lowlight shots

If u manage to buy tamron 17-50 2.8 you can skip both I guess

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Any idea where i can get Tamron or Sigma in Delhi, at a good price..

y dont u try flipkart