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cwright
06-23-2007, 07:16 AM
I purchased a D40X and really like the quality of the pictures over my old 3.2 mp camera. I also purchased the 55 to 200 zoom lens, as that would use my camreas features as it was designed for this camera. Question 1 is is there a doubler that will work with this lens? Question 2 is I was wondering if there were any books or videos available about digital photograhpy in general? I need to learn about all the settings available and what they do. Thanks for you help. Chuck

gmtech79
06-23-2007, 07:36 AM
I seen on nikon's website that any of their teleconvertor's are compatible with the D40x, I don't know about aftermarket convertor's though. I also didn't see that lens listed as compatible or incompatible with convertor's, which could just mean that the website hasn't been updated to list that lens, a little more investigation may be necessary, or maybe someone here will know if that lens is compatible with convertor's. Go here (http://www.nikonusa.com/template.php?cat=1&grp=5&productNr=2130) for Nikon's doubler.

Some books I found very helpful were Thom Hogans ebooks (http://www.bythom.com/d40guide.htm) and Bryan Peterson's "Understanding Exposure" (http://www.amazon.com/Understanding-Exposure-Photographs-Digital-Updated/dp/0817463003/ref=pd_bbs_sr_1/104-0298534-2512702?ie=UTF8&s=books&qid=1182605354&sr=8-1)

Congrats on the purchase!!

Prospero
06-23-2007, 07:55 AM
Though Nikon teleconverters are compatible, you are very likely to lose autofocus. This is because the apperture of the lens is reduced. Using a 1.4x teleconverter the lens will become a f/5.6-f/8 lens, which might still autofocus if the light is good. If you use a 2x teleconverter it will become a f/8-f/11 lens, which will not autofocus at all.