http://www.nikonchat.com/35mm-f2-nikon/
Should I buy a Nikon 35 mm f1.8, Tamron 17-50mm f2.8 lens?
I am new to photography and I have a Nikon D90. I want to buy a lens that I will take sharp images. I have read that the Nikon 35mm f1.8 is sharp, and the Tamron 17-50mm f2.8. I'll be taking a combination of macro shots, indoor, outdoor portraits, group photos, the landscape too. The Nikon 35mm 1.8 is $ 200.00 and $ 450.00 Tamron 17-50 So what should I choose?
The Nikon lens is probably sharper (because there is a zoom lens) and is better for taking pictures indoors and in low light. However, there is a major target for portraits, since it is slightly wider angle. In addition, it is not super wide angle or (as is most limiting in the portraits of the group) – you have to be ready to support physically until the whole scene The Tamron can range from 50mm wide angle to very (good for portraits). Although probably not as good as the Nikon lens, the fact that it is f2.8 probably means it's a good lens. (The cheapest tend to be f3.5 or f4-5.6). You have to decide what you want. The zoom lens is more versatile, but probably not so acute, and certainly not as fast as the fixed focus lens (the 35mm). You can not really have it all.
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