>Next question, as a beginner, what lens kit >should I get with my D5000? So far, I know I like to take >candid shots of people, and like to use natural light >(therefore a camera lens that allows for low light capture. > >Which lens kit do you recommend? > >NIKON D5000 W/18-55 VR LENS >NIKON D5000 W/18-105 VR LENS
The advantage of the 18-105mm over the 18-55mm is the extended zoom range without having to change lenses. You are paying for convienience. That is why many choose the Nikkor 18-200mm VR.
Both 55-200mm lenses are DX. The 55-200mm VR would be the better choice because the advantages of VR become more important at longer focal lengths. The Rule of Thumb for the minimum shutter speed for hand holding on a DX body is: Minimum Shutter Speed = 1/ 1.5 x Focal length of the lens. For example at 200mm the minimum shutter speed to prevent blur due to camera shake is 1/300th sec. VR will allow you to use a shutter speed of about 1/40th sec or so.
The 18-55mm and 55-200mm would be more cost effective. You would be better served to get the 18-105mm then add the Nikkor 70-300mm f/4-5.6G ED IF AF-S VR when you can. It will provide more range with much less overlap and much better IQ (Image Quality).
>NIKON D5000 W/18-55mm f/3.5-5.6G VR Lens + .48x Wide Angle >Panoramic HD Series Fisheye w/ Macro
Scratch this choice off of your list. You will be very disappointed with the performance of the filter type add on lenses.
>Nikon D5000 Digital SLR Camera w/ 18-55mm VR Lens + Sigma >70-300mm Zoom Lens
The Sigma doesn't have VR or OS (Sigma nomenclature) which will make it much more difficult to use in low light. See note above regarding Rule of Thumb.
Regarding shooting in low light. As long as your subject is static or moving very slowly you should not have difficulty capturing images in reasonable ambient lighting conditions. If you intend to shoot sports in low light a Faster (much more expensive) zoom lens would be a much better choice. Good Luck and Enjoy your Nikons!