I am looking at getting a 2x telecoverter for my d5000 what should i be looking for and what are my options I have a Nikon dx 55-200 so i was looking to get more zoom for my bang Do they make 3x converters?
#1. "RE: 2x teleconverter for D5000" In response to Reply # 0
Welcome to Nikonians! The Nikkor 55-200mm was never designed to be used with any Teleconverter. None of the Nikkor TC's will even mount on it. The only 2X TC that might work is a Kenko 300 Series TC. Since the 55-200mm is f/5.6 at 200mm if you mount a 2X TC on it you will get a 400mm f/11 lens. If the AF works at all it will only work in bright sunlight and will be much slower to focus. In anything other than bright sunlight, AF will not work at all, and using Manual focus will be difficult at best because the viewfinder will be very dark. Aside from the focusing issues the degredation of Image Quality (IQ) will be very significant. Kenko does make a 3X TC but it will be useless on your lens. You would be better served saving for a Nikkor 70-300mm f/4.5-5.6G ED ($550.00) IF AF-S VR or a Sigma: 120-400mm f/4.5-5.6 DG OS APO HSM or 150-500mm f5-6.3 DG OS APO HSM (approx. $1000.00 range). Good Luck and Enjoy your Nikons!
#2. "RE: 2x teleconverter for D5000" In response to Reply # 1
The 3x TC performs very poorly on even the best lenses, to the degree that I'm surprised they continue to offer it. On your lens it would make a 600mm f/16 lens. Not only would the actual optics be poor, but even worse you can't avoid further degradation due to diffraction. At f/16 you can't even see to focus unless it's high noon, or your subjects are melting under artificial light.
In addition to the lenses that Marty mentioned, you might also consider the Sigma 70-300/f4-5.6 APO Macro at about $220. Just be sure that you get the latest model with built-in focusing motor. Avoid the similar Sigma DL Macro at about $130.
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!