Having problems with your Nikon D40x Digital Camera ?

When I attach a MC4 conversion lens to my 55-200 dx lens on my Nikon D40x camera body the camera has a hard time focusing and many times will not take the phote.

Answers :

The camera is spec'd to autofocus with lenses that are f/5.6 and faster. The conversion lens is costing you two stops, so it's a wonder you're getting any autofocusing at all with a lens slower than f/2.8.

Unfortunately, it's tough to try to get around the laws of physics. You're just going to have to focus manually.
Repair Help & Product Troubleshooting for Nikon D40x Digital Camera

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